Ethylene oxide ke eng?
Ethylene oxideke motsoako oa lintho tse phelang o nang le foromo ea lik'hemik'hale C2H4O, e leng chefu ea kankere 'me e ne e sebelisoa pele ho etsa li-fungicides. Ethylene oxide e ka tuka ebile ea phatloha, 'me ha ho bonolo ho e tsamaisa libakeng tse telele, kahoo e na le litšobotsi tse matla tsa libaka. E sebelisoa haholo indastering ea ho hlatsoa, ea meriana, ea khatiso le ea ho daea. E ka sebelisoa e le setsi sa ho qala ho hloekisa liindasteri tse amanang le lik'hemik'hale.
Ka la 27 Mphalane, 2017, lenane la lik'hemik'hale tse hlahisoang ke Mokhatlo oa Machaba oa Lipatlisiso ka Kankere ea Mokhatlo oa Lefatše oa Bophelo le ile la qaptjoa bakeng sa litšupiso, 'me ethylene oxide e kenyelelitsoe lethathamong la Class 1 carcinogens.
2. Na ethylene oxide e kotsi 'meleng oa motho?
E kotsi,ethylene oxideke mokelikeli o bonaletsang o se nang 'mala o mochesong o tlase, o atisang ho bolokoa ka har'a lisilindara tsa tšepe, libotlolong tsa aluminium tse hananang le khatello kapa libotlolo tsa khalase, hape ke sebolaea lintho ka khase. E na le matla a matla a ho kenella ka khase le matla a matla a ho thibela likokoana-hloko, 'me e na le phello e ntle ea ho bolaea libaktheria, livaerase le li-fungus. Ha e bake tšenyo ea lintho tse ngata 'me e ka sebelisoa bakeng sa fumigation ea boea, letlalo, lisebelisoa tsa bongaka, joalo-joalo. Mouoane o tla chesa kapa o phatlohe ha o pepesehetse lelakabe le bulehileng. E senya tselana ea ho hema 'me e ka baka mathata a ka mpeng joalo ka ho hlatsa, ho nyekeloa ke pelo le letšollo. Tšenyo ea ts'ebetso ea sebete le liphio le hemolysis le eona e ka etsahala. Ho kopana ho feteletseng ha letlalo le tharollo ea ethylene oxide ho tla baka bohloko bo tukang, esita le makhopho le dermatitis. Ho pepeseha ha nako e telele ho ka baka mofetše. Ethylene oxide ke ntho e chefo haholo bophelong ba rona. Ha re sebelisa ethylene oxide bakeng sa ho bolaea likokoana-hloko, re lokela ho ba le lisebelisoa tse sireletsang. Re tlameha ho ela hloko polokeho le ho e sebelisa feela ha maemo a itseng a phethiloe.
3. Ho etsahala'ng haeba ethylene oxide e chesoa?
Nengethylene oxideha e chesa, e qala ka ho kopana le oksijene ho hlahisa carbon dioxide le metsi. Equation ea karabelo e tjena: C2H4O + 3O2 -> 2CO2 + 2H2O Tabeng ea mollo o feletseng, lihlahisoa tse tukang tsa ethylene oxide ke carbon dioxide le metsi feela. Ena ke ts'ebetso e batlang e le botsoalle ea ho chesa tikoloho. Leha ho le joalo, tabeng ea mollo o sa fellang, carbon monoxide e boetse e thehoa. Carbon monoxide ke khase e se nang ’mala, e sa nkhang hamonate e kotsi haholo ’meleng oa motho. Ha carbon monoxide e kena 'meleng oa motho, e tla kopana le hemoglobin ho fokotsa oksijene maling, e lebisang chefong esita le lefu.
4. Ethylene oxide ke eng lihlahisoa tsa letsatsi le letsatsi?
Mocheso oa kamore, ethylene oxide ke khase e tukang, e se nang mebala e nang le monko o monate. E sebelisoa haholo-holo ha ho etsoa lik'hemik'hale tse ling, ho akarelletsa le antifreeze. Lichelete tse nyane tsa ethylene oxide li sebelisoa e le chefo e bolaeang likokoanyana le likokoana-hloko. Bokhoni ba ethylene oxide ho senya DNA bo e etsa bactericide e matla, empa hape e ka hlalosa ts'ebetso ea eona ea carcinogenic.
Ethylene oxide ke motsoako o nang le mekhoa e mengata e sebelisoang ho hlahisa lihlahisoa tse ling tsa lik'hemik'hale tse sebelisoang mefuteng e fapaneng ea liindasteri le lihlahisoa tsa letsatsi le letsatsi tsa bareki, ho kenyelletsa le ba hloekisang malapa, lihlahisoa tsa tlhokomelo ea botho, le masela le masela. Tšebeliso e nyenyane empa e le ea bohlokoa ea ethylene oxide ke ho thibela likokoana-hloko tsa thepa ea bongaka. Ethylene oxide e ka bolaea lisebelisoa tsa bongaka 'me ea thusa ho thibela maloetse le tšoaetso.
5. Ke lijo life tse nang le ethylene oxide?
Naheng ea heso, tšebeliso ea ethylene oxide bakeng sa ho thibela likokoana-hloko ho kenyelletsa ice cream e thibetsoe ka thata.
Ho fihlela sena, naha ea heso e boetse e thehile "GB31604.27-2016 National Food Safety Standard for the Determination of Ethylene Oxide and Propylene Oxide in Plastics of Food Contact Materials and Products" ho laola litaba tsa ethylene oxide ka thepa ea ho paka. Haeba thepa e finyella tekanyetso ena, ha ho hlokahale hore u tšoenyehe ka lijo tse silafalitsoeng ke ethylene oxide.
6. Na sepetlele se sebelisa ethylene oxide?
Ethylene oxide, e bitsoang ETO, ke khase e se nang 'mala e halefisang mahlo a motho, letlalo le tsela ea ho hema. Maemong a tlase, e kotsi ho carcinogenic, mutagenic, ho ikatisa le tsamaiso ea methapo. Monko oa ethylene oxide ha o bonahale ka tlase ho 700ppm. Ka hona, ethylene oxide detector e hlokahala bakeng sa ho shebella nako e telele ea mahloriso a eona ho thibela kotsi 'meleng oa motho. Leha ts'ebeliso ea mantlha ea ethylene oxide e le thepa e tala bakeng sa li-organic synthesis tse ngata, ts'ebeliso e 'ngoe e kholo ke ho thibela likokoana-hloko liletsa lipetlele. Ethylene oxide e sebelisoa e le sterilizer bakeng sa lisebelisoa tsa mouoane le mocheso. Hona joale e sebelisoa haholo lits'ebetsong tse fokolang tsa ho buoa. Le hoja mekhoa e meng ea ETO, e kang peracetic acid le hydrogen peroxide plasma gas, e ntse e le bothata, katleho ea tsona le ho sebetsa ha tsona li lekanyelitsoe. Ka hona, nakong ena, sterilization ea ETO e ntse e le mokhoa oa khetho.
