Jenereithara ea Ozone e Letsehang e Mathela Ka Ntlong: Edema ea Matšoafo e Acute, Ho holofala ha Methapo ea Odor-Masking, le Keno e Sireletsehileng.¶
Emergency numbers differ by country. This page uses 911, the number for the United States and Canada. Many other countries use 112, 999, or another number. Find the number for your country.
Khoebo le bareki lijenereithara tsa ozone tse ntšang corona ("ozonator" kapa "mechini ea kalafo ea ozone") tse rekisoang inthaneteng 'me li sebelisoa ke bahlokomeli ba lihotele, batho ba hirisang matsatsi a phomolo, lintlha tsa makoloi a khale, beng ba matlo, le basebetsi ba ho lokisa likhohola/mold ha ba sefa kapa ba hloekisa moea oa ka tlung. Ho e-na le hoo, ba sebelisa li-arcs tsa motlakase tse matla (3,000 ho isa ho 20,000 volts) kapa mabone a ultraviolet (185-nanometer UV-C) ho arola limolek'hule tse tloaelehileng tsa oksijene ea diatomic (\(O_2\)) le ho li kopanya hape ho ** oksijene ea triatomic ($ O_3$, tlhahiso ea ozone ho tloha ho boima ba ozone ho ea ho gase ea ozone 00)* 60,000 milligrams ka hora (mg/hr). Ka har'a kamore e koetsoeng, foleteng, mokatong o ka tlase, kapa moaho oa koloi, mochini o le mong oa ozone o nkehang o fihla ho 10 ho isa ho likarolo tse 50 ho milione (ppm) nakong ea metsotso e 15 ho isa ho e 30, e leng 100 ho makhetlo a 500 ho feta moeli oa siling ea molao oa OSHA (0.10 ppm) le ho fihla ho fihlela ho 10 ho fihlela ho 10 Bophelo bo Botle = 10 DL. ppm) moeli. Libakeng tseo tse feteletseng, limolek'hule tse sa tsitsang tsa \(O_3\) li hlobola lielektrone ho tsoa linthong tse phelang ha li kopana: li thibela ka lik'hemik'hale lesela le bobebe la trachea ea hau ea motho le alveoli, li holofatsa methapo ea hau ea monko ka metsotsoana e le hore u ka nahana ka phoso hore khase e qhalane, 'me u itšoara ka likhomaretsi tse hloekisang tsa k'hapete le maru. secondary formaldehyde, acetaldehyde, ultrafine organic aerosols, le corrosive nitric acid. Boloka sebaka sa heno dinomoro tsa tshohanyetso itokisitse, 'me u hlahlobe batataisi ba rona ho bleach e kopantsoeng le ammonia kapa asene khase e chefo, epoxy resin exothermic runaway le VOC purges, le hlobo ka mora ho senyeha ha metsi.
Haeba u kena ka phaposing ea hotele, ntlo e hiriloeng ea Airbnb, ntlo e sa tsoa lokisoa, kapa koloi e nang le lintlha tse ngata, 'me u utloa lebokoso la tšepe le lla le monko o bohale, oa tšepe, o kang bleach o chesa 'metso oa hao le mahlo, u se ke ua lula ka phaposing eo hore u e hlahise. Ho balehela moeeng o hloekileng oa ka ntle hang-hang, ho koala matla ho tloha ka ntle ho potoloho ea potoloho, le ho hlompha ** 2-ho-4-hour half-life decay le cross-ventilation purge window ** ho thibela ho lieha ho lieha ha pulmonary edema ho beha bophelo kotsing.
Etsa sena hona joale¶
- *Khutla ka phaposing kapa koloing hang-hang 'me u koale lemati ka mor'a hao hore u tšele ozone. Hang ha u utloa monko o bohale, o hlabang, oa "chlorine / spark / spark" oa tšepe, utloa ho chesa ka morao 'metsong oa hau kapa sefuba, kapa ho bona lebokoso la fene la tšepe le lumang setulong kapa tafoleng, khutlela morao moeeng o hloekileng hang-hang. Le ka mohla u se ke ua lula ka kamoreng e nang le ozone ho bokella thōtō kapa ho bula lifensetere tse ngata ha u ntse u hema moea o ka hare.
- Koala jenereithara ea ozone KA NTLE ho kena ka phaposing ka ho phethola sekhechana sa potoloho ea lekala phaneleng e kholo ea motlakase. Neng kapa neng ha phanele e kholo ea motlakase e le ka ntle ho phaposi e hloekisitsoeng (ka karacheng, phasejeng, mokatong o ka tlase, kapa leboteng le kantle), tima 15-amp kapa 20-amp breaker e fepang liphaposi tsa kamore eo (kapa flip gene $) hanghang ka lefela ha motho a hema.
- *Haeba u tlameha ho kena ka phaposing ho hula thapo ea motlakase kapa ho bula fensetere: ho hema habeli ka moea o hloekileng oa ka ntle, tšoara moea oa hao ka ho feletseng, u potlakele ho feta metsotsoana e 10 ho isa ho e 15, hula thapo ho tsoa ka ntle ho lebota, 'me u tsoe pele u hema kapa u hema. u se ke ua senya metsotsoana u ntse u phopholetsa likonopo tse nyenyane tsa nako ea dijithale mochineng), 'me u khutlele moeeng o hloekileng pele u hema.
- *Le ka mohla u se ke ua tšepa nko ea hau ka mor'a metsotsoana e 30 ea pele: ozone e baka ka potlako "ho holofala ha methapo ea kutlo" (ho foufala ho nkhang hamonate) libakeng tse nang le chefo. Le hoja batho ba tloaelehileng ba ka fofonela trace ozone ka nako e nyenyane **0.01 ho 0.02 ppm **, ho hema **0.5 ho 5.0+ ppmtory ppmtory ppmtory ea hau ea khemikhale ea ozone ea marulelo a hau metsotso e 1 ho isa ho e 2. Bahlaseluoa ba setseng ka phaposing ba lumela hore monko oa ozone o nyametse hantle ha ba ntse ba hema lintho tse bolaeang.
- *Emela bonyane lihora tse 2 ho isa ho tse 4 ka mor'a ho tima mochine (o nang le lifensetere tse butsoeng kapa HVAC exhaust e matha) pele o kena hape kapa o robala sebakeng. Mocheso o tloaelehileng oa kamore ea kamore (20 ho ea ho 25 degrees Celsius / 68 ho 77 degrees Fahrenheit), ozone e ka hare e na le halofo ea bophelo ea lik'hemik'hale **20 ho isa ho halofo ea lihora tse 60 ho ea ho 2 ho isa ho 60 metsotso * ho bolela hore ho nka lihora tse 2 ho isa ho tse 60 * phekolo ea 20 ppm ho bola ka tlase ho moeli o sireletsehileng oa 0.05 ppm, esita le nako e telele ho tlosa formaldehyde le ozonide byproducts tse entsoeng ha ozone e arabela ka lik'hapete le thepa ea ka tlung.
- *Sheba mang kapa mang ea hemang ozone e teteaneng ka lihora tse 24 ho isa ho tse 48 bakeng sa "Delayed Non-Cardiogenic Pulmonary Edema" (mokelikeli o tlatsang matšoafo lihora tse ngata ka mor'a ho pepeseha). sebakeng dinomoro tsa tshohanyetso (911 ho US / Canada, 112 ho EU, 999 UK) hang-hang bakeng sa tlhahlobo ea oksijene ea sepetlele sa tšohanyetso le tlhahlobo ea corticosteroid / bronchodilator.
Hobaneng ha Moea o 'Se nang Monko' Ka mor'a Phekolo ea Ozone o ntse o na le Formaldehyde le Ultrafine Acids
Esita le ka mor'a hore molek'hule e 'ngoe le e 'ngoe ea ozone ea triatomic (\(O_3\)) e khutlele ho oksijene e tloaelehileng (\(O_2\)) lihora tse peli hamorao, moea oa phaposi o ** o ntse o silafalitsoe ke lik'hemik'hale**. Lithuto tsa k'hemistri ea tikoloho ke U.S. Environmental Protection Agency (EPA) le Lawrence Berkeley National Laboratory (LBNL) li paka hore ha ozone e matla haholo e otla libaka tse ka hare, e kena ozonolysis e nang le unsaturated carbon double bonds (\(C=C\)) e fumanoang ka tšehetso ea k'hapete, pente ea latex, linoleum, oli ea letlalo la motho (squallemones, pinene sprays) le maneneng spray (squallemon) le mapinepine (squallemon) le mapinepine. Boitšoaro boo bo ja ozone empa bo siea moholi o teteaneng oa formaldehyde, acetaldehyde, formic acid, acrolein, le sub-micron secondary organic aerosols (SOA) o nkang lihora tse 6 ho isa ho tse 12 ntle le haeba phaposi e tletse moea o kenang kantle.
Sefate sa qeto: Ho koaloa ho sireletsehileng, ho hloekisa moea, le tlhahlobo ea bongaka bakeng sa ho pepesehela ozone ka tlung¶
Sebelisa sefate sena sa qeto ea ts'ebetso ha u fumana kalafo e sebetsang kapa e sa tsoa phethoa ea ozone ka tlung, kamore ea hotele, sebaka sa mosebetsi kapa koloi.
flowchart TD
Start["Mochini oa Ozone o Fumaneha o Mathela Ka Hare-Kapa KAPA Metallic e Matla/Bleach Monko + Motsoako/Ho Chesa Mahlo"] --> Evacuate["MOHATO OA 1 (HANG-HANG): Khutlela ka ntle moeeng o hloekileng oa ka ntle hang-hang & koala monyako oa kamore; tlosa bana, batho ba baholo, le liphoofolo tsa lapeng (haholo-holo linonyana/ likatse)"]
Evacuate --> MedCheck{"2. Na ho na le motho ea nang le sefuba se thibaneng, ho tsubella, ho khohlela ho sa khaotse, kapa ho hema ka thata?"}
MedCheck -->|"EE: Mathata a ho Phefumoloha"| Call911["Letsetsa 911 / 112 / 999 Hang-hang: Lula u otlolohile (Boemo bo phahameng ba Fowler), fana ka albuterol inhaler e laetsoeng haeba u e-na le asthmatic, lemosa baoki ba liphallelo ka 'High-Concentration Ozone (O3) Inhalation'"]
MedCheck -->|"CHE: Ho tsikitla ha 'metso ha bobebe/nko kapa ho se be le letho"| StopMachine{"3. A na u ka koala motlakase ka kamoreng ho tsoa ho Breaker Panel e ka ntle?"}
StopMachine -->|"EE: Phanele ea li-breaker e fumaneha holong / karacheng / kantle"| FlipBreaker["Flip Room Circuit Breaker OFF -> Ema metsotso e 60 ho isa ho e 90 bakeng sa ho bola ha halofo ea O3 ka tlung PELE ho kena ho bula lifensetere."]
StopMachine -->|"NO: Kamore ea hotele kapa ha ho na monyetla oa ho kena"| BreathHold["HO KENA KA METSOTSO E 10-METSOTSO EA HO PHEFUTSA: Ho hema moea o hloekileng ka ntle -> Ts'oara -> Sprint in, yank plug ho tloha leboteng, notlolla fensetere e le 'ngoe -> Sprint out PELE ho hema"]
FlipBreaker --> PurgeWait["MOHATO OA 4 (PURGE E TLAMANG): Phahamisa moea ka moea o kantle bakeng sa 2 ho isa ho 4 HOURS FULL ho fihlela monko oa tšepe LE o monate/o bolila oa aldehyde o felile 100%."]
BreathHold --> PurgeWait
PurgeWait --> PostCheck["MOHATO 5: Hlakola lerōle la nitric acid condensate ho elektronike / rabara; shebella batho ba pepesehileng bakeng sa lihora tse 24 bakeng sa ho lieha ha pulmonary edema"]
Mehato ea ho pepeseha le toxicology ea bongaka: Tsela eo ozone e senyang lisele tsa matšoafo ka eona¶
Ke hobane’ng ha ozone (\(O_3\)) e le molemo ha e lutse lik’hilomithara tse 25 (15 miles) ka holim’a lefatše sebakeng sa stratosphere, empa e sebetsa e le sebetsa se matla sa lik’hemik’hale boemong ba fatše ka har’a kamore ea hao ea ho phomola? Hobane athomo ea boraro ea oksijene ka har'a molek'hule ea \(O_3\) e hokahane ka mokhoa o fokolang 'me e batla ho hahola lielektrone hole le lera leha e le lefe la biological cell eo e e amang (free-radical lipid peroxidation).
Ho fapana le likhase tse qhibilihang ka metsing tse kang ammonia (\(NH_3\)) kapa hydrochloric acid (\(HCl\)), e qhibilihang hang-hang ka har'a nko e metsi ea nko le 'metso o ka holimo (ho u fa temoso e matla hang-hang ha u ntse u boloka matšoafo a hao a tebileng), ** ozone e na le ho qhibiliha ha metsi ho fokolang haholo . Ha u hema ozone, ho feta ** 75 ho 85 lekholong ea khase e feta nko ea hao le litsela tse ka holimo tsa moea ka ho feletseng 'me e kenella ka ho toba ka har'a mekotla ea moea e tebileng ka ho fetisisa ea matšoafo a hao (the terminal bronchioles le alveoli).
| Khokahano ea Ozone (\(O_3\)) (Likarolo ka Milione - ppm) | Boemo bo Tšoanang ba Sephetho | Regulatory Benchmark / Agency Limit | Liphello Tsa 'Mele le Meriana ea Batho |
|---|---|---|---|
| 0.01 ho isa ho 0.02 ppm (10 ho isa ho 20 ppb) | Latela monko haufi le mochine oa khatiso oa laser kapa ka mor'a sefefo sa lialuma lehlabula | Monyako oa ho Fumaneha ha Mofu oa Batho | Monko o monate oa "tšepe / motlakase / hlatsoetsoa" e hloekileng; ho felloa ke matla ha methapo ea kutlo (ho nkha mokhathala) ho qala ka mor'a metsotso e 10 ho isa ho e 15 |
| 0.05 ppm (50 ppb) | Boholo ba tlhahiso ea molao ho tsoa ho mochini ofe kapa ofe o hloekisang moea oa elektroniki | U.S. FDA Medical Device Limit & CARB (California) Indoor Air Cleaner Limit | Siling e kaholimo e bolokehileng bakeng sa ho lula ka tlung ka lihora tse 24 ke batho ba baholo ba phetseng hantle |
| 0.07 ho isa ho 0.10 ppm (70 ho isa ho 100 ppb) | Kamore ea ho kopitsa e nang le moea o fokolang kapa letsatsi la tlhokomeliso ea mosi | EPA National Ambient Air Quality Standard (0.070 ppm 8-hr); OSHA PEL (0.10 ppm 8-hr); NIOSH Siling (0.10 ppm hang-hang) | Ho omella ha 'metso hanyenyane, moea oa hyper-reactivity ho asthmatics, ho ka lekanyetsoa ho 5% ho isa ho 10% ho theoha ha matšoafo a qobelloang ho felloa ke matla (\(FEV_1\)) nakong ea boikoetliso. |
| 0.30 ho isa ho 1.0 ppm (300 ho isa ho 1,000 ppb) | "plug-in ionic/ozone deodorizer" e setseng e ntse e sebetsa ka kamoreng ea ho hlapela e koetsoeng kapa phaposing ea ho robala | Moeli oa Nako e Khutšoane oa OSHA (STEL = 0.30 ppm bakeng sa metsotso e 15) | Ho khohlela ho omileng nakong ea metsotso e 15, bohloko ba sefuba bo tlase ha u phefumoloha haholo, mahlo a tukang, hlooho e ka pele, ho holofala ka potlako ha li-receptor tsa monko. |
| 5.0 ppm (5,000 ppb) | Metsotso e 5 ka hare ho phaposi e nang le jenereithara ea ozone ea khoebo ea 10,000 mg/hr | NIOSH IDLH (Hang-hang e Kotsi ho Bophelo kapa Bophelo bo Botle = 5.0 ppm) | Lik'hemik'hale tse matla tsa tracheobronchitis, ho khohlela ho matla, ho tsikitla ha bronchial, ho thetheha ha lisele tsa epithelial tse tsamaisang moea, ho ferekana kelellong. |
| 10.0 ho isa ho 50.0+ ppm (10,000 ho isa ho 50,000+ ppb) | ** 15 ho metsotso ea 120 ** ka hare ho kamore e koetsoeng kapa koloi e nang le 10,000 ho 40,000 mg / hr "Ozone Shock Machine" | 100x ho isa ho 500x OSHA Limit (Lethal ka metsotso e 30 ho isa ho e 60 ea ho phefumoloha o sa khaotse) | Cauterization ea lik'hemik'hale tse tobileng tsa alveolar Type I pneumocytes le capillary endothelium; Acute Non-Cardiogenic Pulmonary Edema (plasma e lutla ka mekotleng ea moea lihora tse 2 ho isa ho tse 24 hamorao), hypoxemia, ho hloleha ho phefumoloha. |
Maraba a 3 a patiloeng a mochini o tšosang oa ozone ka tlung¶
Beng ba matlo, bahiri le baeti ba lihotele ba tšeloa chefo ke lijenereithara tsa ozone ka lebaka la likarolo tse tharo tse thetsang tsa 'mele le methapo ea khase:
1. Trap 1: Rapid Olfactory Olfactory Nerve Paralysis ("Ho nkha Bofofu").¶
Haeba u bula lemati la phaposi moo mochini oa ozone o sebetsang ka 15 ppm, phefumoloho ea hau ea pele e otla nko ea hau ka monko o sa tsitsang, o lomang oa bleach le lehalima. Leha ho le joalo, ha u ka kena ka phaposing ka metsotsoana e 60 ho isa ho e 120** ho batla mochine kapa likharetene tse bulehileng, limolek'hule tsa ozone tse lokolohileng ka ho fetesisa li makatsa methapo ea kutlo ea monko e ka har'a epithelium ea nko. - Ka tšohanyetso, ** ha u sa khona ho fofonela ozone **. - Basebedisi ba sa tsebeng ba nahana: “Oho, monko o tlositsoe kapele, ho bolokehile ho lula ka mona.” Ha e le hantle, kamore eo e ntse e e-na le ozone e bolaeang, ’me phefumoloho e ’ngoe le e ’ngoe e chesa lera la alveolar-capillary matšoafong a bona a ka tlaase.
2. Trap 2: "Delayed Pulmonary Edema" Fensetere ea Latency (Lihora tse 2 ho isa ho tse 24 Ka mor'a ho Hlaha)¶
Hobane ozone e na le ho qhibiliha ha metsi ka tlaase 'me e senya lisele tse tšesaane Mofuta oa I alveolar epithelial cell botebong ba matšoafo ho e-na le ho chesa 'metso o ka holimo joaloka chlorine, lehlatsipa le phefumolohang ozone ea boemo bo phahameng ka metsotso e 10 ho isa ho e 20 ha a hloekisa kapa a phutha a ka 'na a tsoa ka phapusing ka ho khohlela ho fokolang feela le sefuba. - Nakong e latelang ** 2 ho lihora tsa 18 ** (hangata ha mohlaseluoa a robetse betheng bosiung boo), 'mele o phahamisa karabelo e matla ea ho ruruha ho lisele tse shoeleng tsa alveolar. - Likamano tse tiileng pakeng tsa methapo ea mali ea capillary ea matšoafo lia senyeha, 'me plasma ea mali e lutla ka ntle ho li-capillaries ka ho toba ka mekotleng ea moea e nyenyane haholo ea matšoafo (non-cardiogenic pulmonary edema). - Motho o tsoha ka 2:00 AM a feheloa ke moea, a sa khone ho robala fatše (orthopnea), a khohlela maro a frothy, le mali a nang le oksijene (\(SpO_2\)) a theohela ka tlase ho karolo ea 88 lekholong, e leng se hlokang hore sepetlele sa tšohanyetso se kene ka moea o motle (CPAP/BiPAP) le oksijene.
3. Sefi sa 3: Ho Poolellana ka Boto ho Feta Moea le Ho shoa ha Liphoofolo¶
Sheba boima ba limolek'hule tsa ozone ha bo bapisoa le moea o tloaelehileng oa kamoreng: - Moea o omileng o tloaelehileng (78% \(N_2\), 21% \(O_2\)) o na le boima bo tloaelehileng ba molar 28.97 g/mol. - Ozone (\(O_3\)) e na le molar boima ba 48.00 g/mol, e etsa hore ozone 1.66 e be boima ho feta moea ka makhetlo a 1.66. - Ha moferefere oa fan o kopanya ozone ka phaposing eohle ha mochini o ntse o sebetsa, hang ha fene e emisa, ozone e tebileng e teba ho **limithara tse 60 (maoto a mabeli) a fatše **, e kopane ka likamoreng tse ka tlase, litepising le libetheng tsa liphoofolo tse ruuoang lapeng. - **Likotsi tse feteletseng ho linonyana tse ruuoang lapeng, likatse le lintja **: Mekhoa ea ho phefumoloha ea linonyana (lipapakhaee, li-cockatiel, finches, canaries) li sebelisa mekotla ea moea e sa lekanyetsoang e nang le lera la phapanyetsano ea khase e tšesaane haholo e monyang chefo ka makhetlo a 3 ho isa ho a 5 ho feta tekanyo ea motho; esita le 0.2 ho isa ho 0.5 ppm ea ozone e bolaea linonyana tse ruuoang lapeng ka potlako, ha lintja le likatse tse rapaletseng fatše li hema lera le teteaneng ka ho fetisisa la ozone le boemong ba fatše.
Lipalo tsa lik'hemik'hale tsa halofo ea bophelo: Ha e le hantle ho nka nako e kae hore ozone e ka hare e bole ho isa maemong a sireletsehileng?¶
Baetsi ba mechine ea ozone ea "30 000 mg/hr" kapa "40,000 mg/hr" e tsoang linaheng tse ling ba atisa ho hatisa liphatlalatso tse kotsi, tsa bohata tsa saense libukeng tsa bona tsa basebelisi, ba re: "Ema metsotso e 20 ho ea ho e 30 ka mor'a hore sebali sa nako se eme pele u kena ka kamoreng."
Ha re shebeng fisiks ea 'nete ea indoor ozone half-life (\(t_{1/2}\)) e lekantsoeng ka bo-ramahlale ba meaho:
- Half-Life ea 'Nete ea Ka hare ea Ozone ke Efe?
- Ka kamoreng e se nang letho e nang le mocheso o tloaelehileng oa ka tlung (**20 ho ea ho 24 likhato Celsius / 68 ho isa ho 75 likhato tsa Fahrenheit **), mongobo o fokolang ho isa ho o itekanetseng, le lifensetere tse koetsoeng, bophelo ba halofo ea ozone (nako e hlokahalang bakeng sa liphesente tse 50 tsa limolek'hule tsa $ O_3$ ho boela ho $ O_2 $ ka ho thulana ha mocheso * metsotso e 3) ke ho thulana ha mocheso.
- (Ka phaposing e batang, mokatong o ka tlaase, kapa ka kamoreng ea koloi ea mariha ka 5 ho isa ho 10 likhato tsa Celsius / 40 ho isa ho 50 likhato tsa Fahrenheit, ozone e senyeha butle haholo, e otlolla halofo ea bophelo ba eona ho 90 ho isa ho 120+ metsotso.)
- Hobaneng ho Leta Metsotso e 30 ho U Siea U phefumoloha ka makhetlo a 100 ho feta Moedi o Sireletsehileng:
- Ha re re jenereithara ea khoebo ea ozone e sebetsa lihora tse 2 ka phaposing e koetsoeng, 'me e etsa hore ho be le moea o mongata oa 16.0 ppm (boemo bo tloaelehileng ba ho tšoha).
- U batla hore mahloriso a theohele ka tlase ho **0.05 ppm ** moeli o sireletsehileng oa ho lula pele o kena le ho robala.
- Ha re shebelle ho bola re sebelisa **metsotso e 40 ea halofo ea bophelo ea ka tlung ** lifensetere tse koetsoeng:
- **Metsotso e 0 ka mor'a ho koala **: ** 16.00 ppm ** (320x moeli o sireletsehileng - E Kotsi Bophelong kapa Bophelong hanghang)
- metsotso e 40 (1 halofo ea bophelo): 8.00 ppm (160x moeli o sireletsehileng - o ntse o le ka holimo ho IDLH)
- Metsotso e 80 (2 halofo ea bophelo): 4.00 ppm (80x moeli o sireletsehileng - tšenyo e matla ea matšoafo)
- Metsotso e 120 (3 halofo ea bophelo - lihora tse 2): 2.00 ppm (40x moeli o sireletsehileng - ho khohlela ho matla / bohloko ba sefuba)
- metsotso e 160 (matshelo a 4): 1.00 ppm (20x moeli o sireletsehileng)
- Metsotso e 200 (5 halofo ea bophelo): 0.50 ppm (10x moeli o sireletsehileng)
- Metsotso e 240 (6 halofo ea bophelo - lihora tse 4): 0.25 ppm (5x moeli o sireletsehileng)
- Metsotso e 320 (8 halofo ea bophelo - lihora tse 5.3): 0.06 ppm (E atamela moeli o sireletsehileng, ntle le aldehyde ea bobeli)
- Kamoo Mocheso, Mongobo, le Phallo ea Moea o Pharollang li Potlakisang Phaello:
- Ho Phahamisa Moea (Ho Fetisisa): Ho bula lifensetere tse peli ka mahlakoreng a fapaneng a phaposi le lebokose la fene le fokelang ka ntle ho nkela sebaka sa moea oa phaposi kaofela metsotso e meng le e meng e 3 ho isa ho e 5, ho theola \(O_3\) le formaldehyde ea bobeli ho maemo a ka ntle a ka ntle ka 30 ho isa ho metsotso e 60.
- Mocheso le Mongobo: Haeba lifensetere li ke ke tsa buloa ka bophara hang-hang, ho phahamisa mocheso o ka tlung ho 28 ho isa ho 32 degrees Celsius (82 ho isa ho 90 degrees Fahrenheit) ho fokotsa halofo ea bophelo ba ozone ka halofo (ho isa ho metsotso e ka bang 15 ho isa ho e 20).
Likotsi tsa bobeli tsa lik'hemik'hale: ozonolysis ea holim'a metsi, asiti ea nitric, le ho senyeha ha rabara¶
Ha motho e mong a tsamaisa jenereithara ea ozone ka tlung ntle le phepelo ea oksijene concentrator (ho bolelang hore mochini o senya moea o mongobo o nang le 78% ea nitrogen (\(N_2\)), 21% ea oksijene (\(O_2\)), le mouoane oa metsi (\(H_2O\))), likarolo tse tharo tse senyang tsa lehlakore la lik'hemik'hale li etsahala hohle lapeng kapa ka hare ho koloi ea hau:
1. Nitric Oxide (\(NO_x\)) le Corrosive Nitric Acid (\(HNO_3\)) Fallout¶
Letlapa le theko e tlaase le feptjoang ka moea oa corona-discharge ha le arole oksijene feela; arc ea motlakase e matla haholo e boetse e arola naetrojene ea sepakapaka (\(N_2\)), e hlahisang nitrogen dioxide (\(NO_2\), khase e chefo e sootho e senyang matšoafo) le dinitrogen pentoxide (\(N_2O_5\)). - Ha \(N_2O_5\) e kopana le mongobo o tloaelehileng oa ka tlung kapa holim'a metsi, e etsa marotholi a microscopic a nitric acid (\(HNO_3\)) a lulang e le filimi e sa bonahaleng, e bolila, e khomarelang e tšoeu kapa e mosehla holim'a likonopo tsa mabati, li-countertops tsa granite, liboto tsa khomphutha, li-screens tsa thelevishene, le li-copper tsa HVAC tsa mouoane le li-copper tsa chrome.
2. Surface Ozonolysis -> Formaldehyde, Acetaldehyde, le Formic Acid¶
Na u kile ua hlokomela hore kamore kapa koloi e sebelisitsoeng e tšoaroang ka mochine oa ozone e na le monko o makatsang, o phehellang ** "monko o monate oa lik'hemik'hale / sepetlele se monate sa lik'hemik'hale" ka matsatsi kapa libeke ka mor'a moo? - Monko oo o sa feleng ha o eseng ozone; ke aldehyde (formaldehyde, acetaldehyde, nonanal, le decanal) le organic acids. - Ha ozone e hlasela carbon-carbon double bonds (\(C=C\)) ka synthetic carpet support (styrene-butadiene latex), polyurethane foam cushions, linoleum, natural wood terpenes, le human skin squalene oil e kolobisitsoeng ka materaseng kapa mabiling a koloi, e arola limolek'hule tseo ho li etsa matsatsi a sa tsitsang. - Mokhoa oa ho tlosa monko oa "post-ozone aldehyde": Hobane masala a aldehydes le nitric acid a qhibiliha ka metsing 'me a na le asiti hanyenyane, hlakola libaka tsohle tse thata, li-dashboards tsa likoloi tsa vinyl, litulo tsa letlalo le mabota ka tharollo e futhumetseng ea **khaba e le 1 (ligrama tse 15) ea soda le ho e noa (sodium bicarbonate) sebakeng se le seng sa metsi. activated virgin coconut-shell charcoal ka phaposing (activated carbon catalytically senya masala a \(O_3\) le volatile aldehydes).
3. Ho phunyeha ha Rubber ea Tlhaho, Elastic, Latex, le Wire Insulation ("Ozone Cracking").¶
Esita le phekolo e le 'ngoe ea lihora tse 2 e nang le phello e phahameng ea ozone ka ho sa feleng e hlahisa rabara ea tlhaho, nitrile, neoprene, le latex (mochine o tsebahalang oa ho hlōleha ha indasteri o bitsoang ozonolysis elastomers cracking). - Ho siea mochine oa ozone o sebetsang ka kamoreng kapa koloing ho ka etsa hore maqhama a thekeng a apereng liaparo, sehatsetsi sa rabara / mamati a koloi a koalang boemo ba leholimo, limaske tsa mochini oa CPAP le li-tubing, ho pota-potiloe ke bubu ba libui tsa acoustic, le terata ea khale ea rabara ea motlakase hore e fetohe e brittle, e khomarele, kapa e arohane e bulehile tlas'a tsitsipano.
Protocol ea mohato ka mohato: Mokhoa oa ho koala ka mokhoa o sireletsehileng le ho hloekisa kamore e tletseng ozone kapa koloi¶
Latela tatelano ena hantle ho latela hore na mochini oa ozone o ka har'a ntlo, hoteleng / phaposi ea Airbnb, kapa khabinete ea makoloi:
Maemo a A: Ka hare ho Ntlo kapa Afolete (e nang le Phihlello ea Phanele ea Sekhechana sa Motlakase)¶
- ** SE KE UA bula lemati la kamore**: Boloka lemati la kamore e nang le ozone kapa kamore e ka tlase e koetsoe ka thata.
- Tsamaya ho ya Lebokoseng le Leholo la Motlakase: Fetisa sekhechana sa potoloho sa lekala se ngotsweng bakeng sa phaposi eo ho
OFF(kapa flip breaker ea mantlha ea 100A/200A bakeng sa metsotsoana e 60 haeba phanele e sa ngolisoa, leha ho le joalo hlokomela hore li-timers tsa maqeba a selemo ka mechini e theko e tlaase ea ozone li tla lula li theohile ebe li qala hape haeba motlakase o khutlisetsoa pele mochini o daelang o fihla zero - kahoo **tlohela sekhechana sa lekala HO TLOHILE **). - Ema Metsotso e 60 ho isa ho e 90 Pele o Bula Monyako: Tlohela ozone e qabeletsoeng e kene ka har'a kamore e koetsoeng ha ho se motho ea pepesitsoeng.
- ** Bula Window ea Metsotso e 15 ea Phefumoloho **: Kamora metsotso e 90, phefumoloha moea o mocha ka har'a phasejeng, tšoara moea oa hau, u kene ka phapusing, u ntše mochini o tsoang leboteng, u lahlele lifensetere tse peli tse bulehileng haholo, beha fan ea lebokose fensetereng e le 'ngoe e supang ** KA NTLE **, khutlela ka phasejeng, ebe u koala lemati.
- Fetola moea bakeng sa Lihora tse 2 ho isa ho tse 3: Boloka sefene se timang ho fihlela monko o mong le o mong oa tšepe kapa o monate/o bolila oa aldehyde o felile, ebe u hlakola lideske, lihape tsa mamati le libaka tse thata ka lesela le mongobo la ho baka.
Boemo B: Ka hare ho Kamore ea Hotele kapa Ho hiroa ha Nako e Khutšoane (Moo Tlhokomelo ea Ntlo e Siileng Mochini o Tsamaea kapa o sa tsoa Qeteloa)¶
Ka linako tse ling mosebetsi oa ho hloekisa hotele kapa moamoheli oa Airbnb o tsamaisa mochini oa ozone oa 20,000 mg/hr ho pata mosi oa sakerete kapa monko oa phoofolo ea lapeng ho moeti oa pele ebe o o lokolla metsotso e 10 pele o kena ka 3:00 PM:
1. Hana ho Tlamolla kapa ho Lula ka Phaposing: Haeba u bula lemati la phaposi ea hotele kapa khiriso ea matsatsi a phomolo 'me u utloa monko o monate oa ozone o hlabang 'metso (kapa u fumana mochine oa tšepe o ntse o lutse tafoleng), ** khutlela ka phasejeng hang-hang le lelapa la hau le liphoofolo tse ruuoang lapeng **.
2. Batla Phetisetso ea Kamore Hang-hang (Eseng "Moea oa Metsotso e 30): Hangata basebetsi ba hoteleng ba ithaopela ho romela mohlokomeli oa ntlo ho tla bula fensetere kapa ho fafatsa se hloekisang moea ka metsotso e 20. Hana ka boitlhompho 'me u batle hore motho a fetisetsoe phaposing e 'ngoe mokatong o mong, hobane lifensetere tsa hotele li lula li koetsoe ka libote bakeng sa polokeho ea ha hoetla, 'me materase/mmete o tla tima ka khase ea formaldehyde bosiu kaofela.
3. **Haeba e le Sebaka sa Airbnb / sa Phomolo se se Nang Setsi se Seng **: Tlosa mochini nakong ea ho hema metsotsoana e 10, bula lemati le fensetere le kantle ho ntlo, fetola fene ea thermostat ea HVAC ho ON (feela ha e sa kopanele li-ductwork le li-suite tse ling tse tšoaretsoeng), 'me u tlohe sebakeng seo bakeng sa bonyane lihora tse 3 ho isa ho tse 4 (ea reschorenteng kapa serapeng sa boikhathollo) pele u khutla.
Boemo ba C: Ka hare ho Koloi e Sebelisitsoeng, Koloi ea Rideshare, kapa Kamore ea Likoloi e Felletseng¶
Barekisi ba likoloi tse sebelisitsoeng le lisebelisoa tsa mehala hangata ba beha jenereithara ea ozone ea 10,000 mg/hr setsing sa koloi bakeng sa lihora tse 1 ho isa ho tse 2 lifensetere li phuthoa 'me A/C e behiloe ho Recirculate ho tlosa monko wa koae kapa hlobo. Hobane khabinete ea koloi e na le bophahamo ba ka hare ba li-cubic metres ** 2.5 ho isa ho 3.5 (maoto a 90 ho isa ho a 120) ** - e nyane ka makhetlo a 15 ho feta kamore ea ho robala - mahloriso a ozone ka har'a koloi a fihla ** 50 ho isa ho 200+ ppm **, a tlatsa litulo tse foam le likotopo tsa dashboard:
1. Ema U Phethahatse 'me U Bule Menyako E Mene ea Likoloi hammoho le Trunk/Tailgate ho tloha Ka Ntle: Le ka mohla u se ke ua lula fatše setulong sa mokhanni ho lumelisa koloi ha ntlwana e tletse ozone.
2. Hula Khoele ea Katoloso ho Tsoa Kantle ho Lebota Pele: Hakolla thapo ea motlakase leboteng la karache pele u ntša mochini ka koloing.
3. Lumella Koloi e Tsoe ka Metso e 4 ka Bophara e Bule Kantle ka Metsotso e 60: Hang ha khase e ngata e felile, kena ka hare (u sa lule ka hare), qala koloi, theola lifensetere tsohle, fetola taolo ea boemo ba leholimo ea A/C ho Fresh Outside Air (thinya Recirculate TLOA), beha sefene se fokang ho PHAHAMA **, e u tlohelle koloi hore e mathele ka ntle sebakeng se sireletsehileng bakeng sa metsotso e 30** ho tlosa ozone le asiti ea nitric ka ne ho dashboard evaporator core le foam air ducts.
4. Hlakola Lebili la Setere, Mabanta a Seat, le Dashboard: Ozone e sebetsana ka matla le oli ea letsoho la motho (squalene) lebiling la setereng le gearshift, e siea filimi ea ozonide e khomarelang, e hlabang e bakang dermatitis matsohong a hau ntle le haeba e hlakoloa ka sesepa le metsi.
Ke Cartridge efe ea ho Phefumoloha e hlileng e thibelang Khase ea Ozone? (Hobaneng Li-Mask tsa N95 li sa etse letho)
Pampiri e tloaelehileng N95, KN95, kapa mask a lerōle la ho buoa e fana ka tšireletso ea 0 lekholong khahlanong le khase ea ozone ($ O_3$); khase e feta ka kotloloho ka har'a likhoele tse itseng ho ea matšoafong a hao. Haeba u mosebeletsi oa tokiso, moenjiniere oa tlhokomelo ea hotele, kapa mong'a ntlo ea tlamehang ho kena sebakeng se tletseng ozone, u tlameha ho roala mochini o phefumolohang o lekanang halofo ea sefahleho kapa sefahleho se felletseng sa elastomeric se nang le NIOSH-approved Organic Vapor / Acid Gas + Activated Carbon cartridges (OV/AG/P100) e fuoe lintlha tse khethehileng ke moetsi (joaloka 3M kapa Honeywell) bakeng sa ho bola ha ozone, e kopantsoeng le likhalase tsa likhalase tsa lik'hemik'hale tse tiisitsoeng.
Linomoro tsa libaka tsa tšohanyetso le liprothokholo tsa mekhatlo¶
Haeba mang kapa mang a e-na le ho khohlela, bohloko ba sefuba, ho hema ka thata, kapa ho hema ka thata ka mor'a ho kena ka kamoreng e nang le ozone, batla keletso ea tšohanyetso ea bongaka kapa ea ho laola chefo hang-hang:
- United States le Canada:
- ** Phatlalatso ea Bongaka ea Tšohanyetso **: Letsetsa 911.
- Mohala oa Poison Control (24/7 Free Clinical Toxicology Triage): Letsetsa 1-800-222-1222 United States kapa 1-844-POISON-X (1-844-764-7669) Canada. Litsebi tsa chefo li ka bala likhakanyo tsa ppm ho tsoa ho tekanyo ea mg/hr ea mochini le bophahamo ba kamore le ho eletsa hore na ho hlokahala tlhokomeliso ea lefapha la tšohanyetso bakeng sa ho lieha ha pulmonary edema.
- Lithibelo le Meeli e Laolang: California Air Resources Board (CARB) e thibela ka thata ho rekisoa ha mochini ofe kapa ofe o hloekisang moea o ka tlung kapa jenereithara ea ozone ea bareki California e ntšang ho feta 0.050 ppm ea ozone, le U.S. EPA e bolela tlalehong ea eona ea bohlokoa Lijenereithara tsa Ozone tse Rekisoang e le Lihloekisi Tsa Moea hore ozone ha e na matla a ho tlosa hlobo, livaerase kapa carbon monoxide sebakeng se sireletsehileng bakeng sa batho.
- United kingdom:
- Emergency Medical Dispatch: Letsetsa 999 (kapa letsetsa NHS 111 bakeng sa tlhahlobo ea phefumoloho e sa sokeleng bophelo).
- Meeli ea Ponahatso ea Sebaka sa Mosebetsi le Beng ba Moaho: The UK Health and Safety Executive (HSE EH40) e beha Moedi o tiileng oa Sebaka sa Mosebetsi (WEL) bakeng sa ozone ea 0.20 ppm (nako ea litšupiso ea nako e khutšoane ea metsotso e 15).
- Mokhatlo oa linaha tsa Iropa:
- ** Phatlalatso ea Tšohanyetso**: Letsetsa 112 ho pholletsa le linaha tsohle tseo e leng litho tsa EU. Tlas'a EU Biocidal Products Regulation (BPR), mechine e hlahisang ozone e ka har'a situ e hloka lets'oao le tiileng la ho notlela kantle/tag-out le netefatso ea moea oa kamora kalafo ka tlase 0.06 ho 0.10 ppm.
- Australia le New Zealand:
- ** Phatlalatso ea Tšohanyetso**: Letsetsa 000 Australia kapa 111 New Zealand.
- Setsi sa Boitsebiso ka Poisons: Letsetsa 13 11 26 (Australia) kapa 0800 764 766 (New Zealand). Mosebetsi o Sireletsehileng Australia e tiisa maemo a phahameng a thibelo ea ho pepeseha ha ozone a 0.10 ppm (0.20 mg/m³) a sa tlamehang ho fetisoa ka nako efe kapa efe.
- India le Asia-Pacific:
- ** Phatlalatso ea Tšohanyetso **: Letsetsa ** 112 ** India; 119 Japane le Korea Boroa; 995 Singapore.
Ho nka thuso ea pele le thupelo ea CPR ho tsoa ho Sefapano se Sefubelu, St John Ambulance, kapa mofani oa lehae ea ngolisitsoeng ka molao ho u lokisetsa ho laola likotsi tse matla tsa ho hema le maemo a tšohanyetso a ho hema ka katleho.
Lipotso tse botsoang khafetsa¶
Ke hobane'ng ha monko o matla oa bleach / motlakase o ile oa nyamela ka mor'a hore ke eme ka kamoreng metsotso e 'meli?¶
Khase ea ozone e maemong a ka holimo ho likarolo tse 0.5 ho isa ho tse 1.0 ho milione e 'ngoe le e 'ngoe e holofatsa ka potlako methapo ea kutlo e monko e karolong e ka holimo ea nko, e leng phello e chefo ea methapo ea kutlo e tsejoang e le mokhathala o monko kapa bofofu ba monko. Ha u khaotsa ho fofonela ozone ka mor’a motsotso kapa e ’meli ka hare ho phaposi, khase e chefo ha e e-s’o ka e fela; ho e-na le hoo, kutlo ea hao ea ho fofonela e ’nile ea tsieleha ka nakoana ha matšoafo a hao a tebileng a ntse a tsoela pele ho hema maemo a kotsi a oksijene ea triatomic. Suthela moeeng o hloekileng hang-hang.
Na buka ea litaelo ea jenereithara ea ka ea ozone e nepahetse ha e re ho bolokehile ho kena ka kamoreng hape metsotso e 30 ka mor'a hore mochine o emise?¶
Che, tseko ea "ho ema metsotso e 30" e hatisitsoeng mochining o mongata oa ozone ha e nepahale ka mokhoa o kotsi. Ka mocheso o tloaelehileng oa kamore e nang le lifensetere tse koetsoeng, ozone ea ka tlung e na le halofo ea bophelo ea lik'hemik'hale e ka bang metsotso e 30 ho isa ho e 60, ho bolelang hore metsotso e meng le e meng e 30 ho isa ho e 60 mahloriso a theoha ka halofo feela. Hobane kalafo ea 10,000 ho isa ho 30,000 mg / hr e tlatsa kamore ea ho robala ka 10 ho 30 ppm ea ozone (200 ho makhetlo a 600 ho feta moeli o sireletsehileng oa 0.05 ppm), ho nka bonyane bophelo ba halofo ea 6 ho isa ho tse 8 (lihora tse 3 ho isa ho tse 4) kapa metsotso e 60 ea ho ts'oara ka mabifi hore e be sebaka se sireletsehileng sa fensetere.
"Ho lieha ha pulmonary edema" ke eng, hona ke hobane'ng ha ke hloka ho shebella matšoao lihora tse ngata ka mor'a ho hema ozone?¶
Kaha khase ea ozone ha e qhibilihe habonolo lefing le metsi la nko le ’metso, hoo e ka bang karolo ea 85 lekholong ea ozone e hemang e tsamaea ho theosa ho theosa le mekotlana ea moea e nyenyane haholo ( alveoli ) e tlaase matšoafong a hao, moo ka lik’hemik’hale e chesang lisele tse tšesaane haholo tse arolang moea le mali a hao. Le hoja u ka 'na ua ikutloa u khohlela hanyenyane hang ka mor'a hore u tsoe ka kamoreng, lihora tse 2 ho isa ho tse 24 tse latelang mabota a capillary a senyehileng a ka qala ho lutla plasma ea mali ka har'a mekotla ea hau ea moea (non-cardiogenic pulmonary edema), e bakang ho hema ka tšohanyetso, ho hema, le oksijene ea mali e tlaase ha u ntse u leka ho robala bosiung boo.
Ke hobane'ng ha ntlo ea ka kapa koloi ea ka e ntse e nkha joaloka lik'hemik'hale tse bolila kapa matsatsi a lik'haboto tse metsi ka mor'a phekolo ea ozone?¶
Leha khase eohle ea ozone ($O_3$) e khutlela ho oksijene e tloaelehileng ka mor'a lihora tse 'maloa, ha ozone e ntse e sebetsa, e ile ea sebetsa ka lik'hemik'hale ka libonto tsa k'hapete tse tšehetsang k'hapete ea hau, li-cushions tsa foam, pente, letlalo le li-sprays tse hloekisang (ketso e bitsoang ozonolysis). Boitšoaro bona bo baka lintho tse silafatsang tse tšoarellang nako e telele tse kenyelletsang formaldehyde, acetaldehyde, formic acid le decanal, tse kolobang ka har'a masela a masoba 'me butle-butle li tima monko o bolila, o monate kapa o kang oa khateboto ka matsatsi. Hlakola moea o sa khaotse, hlakola libaka tse thata ka soda le metsi, 'me u sebelise mekotla e kentsoeng ea mashala ho monya li-aldehyde tse setseng.
Na ho roala maske a lerōle a N95 ho tla sireletsa matšoafo a ka haeba ke kena ka phapusing ho ea tima mochini oa ozone?¶
Che, N95, KN95, kapa mask a opereishene e ts'oara feela likaroloana tse tiileng tsa lerōle le marotholi a metsi; ozone ke khase e hloekileng ea limolek'hule e fetang liperesente tse 100 ka kotloloho ho mask a N95 joalo ka ha eka ha o a apara letho ho hang. Ntle le haeba u e-na le sephefumolohi se khethehileng sa elastomeric se kentsoeng ka li-cartridges tsa khabone tse lumelitsoeng ke NIOSH tse lumelletsoeng ke NIOSH, tsela e le 'ngoe feela e bolokehileng ea ho notlolla mochini o sebetsang ntle le phihlello ea kantle ke ho nka moea o mocha ka ntle, tšoara moea oa hau ka botlalo, o kenelle pele ho nako e ka tlase ho metsotsoana e 10 ho tsoa, ho phunya ka morao ho isa ho 10.
Na jenereithara ea ozone e ka hla ea bolaea likokoana-hloko tsa hlobo, litšitšili, kapa maphele ka tlung ea ka?¶
Ho latela tlhahlobo e hlahlobiloeng ke lithaka tsa US Environmental Protection Agency (EPA), ho bolaea likokoana-hloko tsa hlobo, libaktheria, kapa likokoanyana tse nang le ozone ea khase ho hloka hore ho be le maikutlo a feteletseng (10 ho 100+ ppm) a tšoarellang lihora tse ngata, maemo a senyang rabara ea tlhaho, a senya lisebelisoa tsa elektronike, a tlatsa ntlo ka formaldehyde, 'me a bolaea batho. Li-spores tsa hlobo tse shoeleng li ntse li baka maikutlo a ho kula le asthmatic ha li hema, ho bolelang hore ozone ha e nke sebaka sa ho tlosoa ha hlobo.
Litataiso tse amanang¶
- Bleach e tsoakiloeng le ammonia kapa asene: chlorine e chefo le chloramine gas purge
- Epoxy resin exothermic runaway, polyurethane foam fumes, le VOC purge
- Hlobo ka mor'a ho senyeha ha metsi: pheko e bolokehileng e se nang bleach le PPE
- Carbon monoxide le ho hema mosi ke thuso ea pele
- Lenane la linomoro tsa tshohanyetso
Mehloli le tataiso ea semmuso¶
- U.S. Setsi sa Tšireletso ea Tikoloho (EPA): Lijenereithara tsa Ozone tse Rekisoang e le Lihloekisi Tsa Moea: Tekolo ea Katleho le Liphello tsa Bophelo bo Botle.
- **Setsi sa Sechaba sa Tšireletso le Bophelo bo Botle ba Mosebetsi (NIOSH) & OSHA: ** NIOSH Pocket Guide to Chemical Hazards: Ozone (CAS 10028-15-6, IDLH = 5.0 ppm, Ceiling = 0.10 ppm).
- Boto ea Mehloli ea Moeeng ea California (CARB): Lihloeki tsa Moea tse Kotsi tse Hlahisang Ozone le E Tlamang 0.050 ppm Tekanyetso ea Mohaho oa Ka tlung.
- Lawrence Berkeley National Laboratory (LBNL): Indoor Ozone Chemistry: Surface Ozonolysis of Terpenes le Squalene Producing Formaldehyde.
- Mookameli oa Bophelo bo Botle le Tšireletseho (HSE - United Kingdom): EH40/2005 Meeli ea Ho Hlaha Sebakeng sa Mosebetsi le Tlhokomeliso ea Tataiso EH38: Likotsi tsa Bophelo bo Botle ba Ozone.