Weebụsaịtị a na-eji kuki iji melite ahụmịhe onye ọrụ gị. Site n'ịga n'ihu na-eji saịtị a, ị kwenyere na amụma kuki anyị.
Ọ bụrụ na ị nwere nọmba ndebanye aha ACS, biko tinye ya ebe a ka anyị wee jikọta akaụntụ a na ndị otu gị. (nhọrọ)
ACS ji nzuzo gị kpọrọ ihe. Site n'inye ozi gị, ị nwere ike ịnweta C&EN ma denye aha na akwụkwọ akụkọ anyị kwa izu. Anyị na-eji ozi ị nyere eme ka ahụmịhe ịgụ ihe gị ka mma, anyị agaghịkwa ere ozi gị nye ndị ọzọ.
Ngwugwu ACS Premium na-enye gị ohere zuru oke ịnweta C&EN na ihe niile obodo ACS nwere inye.
Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi nke US atụọla aro ka a machibido iji methylene chloride eme ihe n'ebe niile ndị ahịa na ọtụtụ ngwa ụlọ ọrụ mmepụta ihe na azụmaahịa. Atụmatụ ọhụrụ a bịara mgbe ụlọ ọrụ ahụ mechara nyocha ihe egwu na Nọvemba 2022 na achọpụtara na ikpughe ihe mgbaze nwere ike ibute nsogbu ahụike dị njọ dịka ọrịa imeju na kansa.
A na-ahụ Methylene chloride n'ọtụtụ ngwaahịa dị iche iche, gụnyere ihe nrapado, ihe na-ewepụ agba, na ihe na-eme ka ihe dị ọcha. A na-ejikwa ya eme ihe dị ka ihe e ji emepụta kemịkalụ ndị ọzọ. Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi nke US na-eme atụmatụ na ihe karịrị ndị ọrụ 900,000 na nde mmadụ 15 na-enweta methylene chloride mgbe niile.
Ngwakọta a bụ nke abụọ a ga-enyocha n'okpuru Iwu Nchịkwa Ihe Ndị Na-egbu Egbu (TSCA), nke chọrọ ka Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi nyochaa nchekwa nke kemịkalụ azụmaahịa ọhụrụ na ndị dị adị. Ebumnuche ụlọ ọrụ ahụ bụ ịkwụsị mmepụta, nhazi na nkesa nke methylene chloride n'ime ọnwa 15.
A naghị anabata ụfọdụ ojiji nke methylene chloride site na mmachibido iwu a, gụnyere ojiji ya dị ka ihe na-eme ka kemịkalụ dị. Dịka ọmụmaatụ, a ga-anọgide na-eji ya eme ihe na mmepụta nke hydrofluorocarbon-32 refrigerant, nke e mepụtara dị ka ihe ọzọ maka nhọrọ ndị nwere ike ịbawanye okpomọkụ ụwa na/ma ọ bụ mbelata ozone.
“Anyị kwenyere na methylene chloride ka dị nchebe maka ojiji ndị agha na gọọmentị etiti,” Michal Friedhoff, onye nchịkwa osote nke Office of Chemical Safety and Pollution Prevention nke Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi (EPA), kwuru na ogbako ndị nta akụkọ tupu ọkwa ahụ. “EPA ga-achọ ihe iji chebe nchekwa ndị ọrụ.”
Ụfọdụ ndị otu gburugburu ebe obibi nabatara atụmatụ ọhụrụ a. Agbanyeghị, ha gosikwara nchegbu gbasara ihe ndị a na-agaghị emeli na iwu ahụ nke ga-ekwe ka a nọgide na-eji methylene chloride ruo ma ọ dịkarịa ala afọ iri na-abịa.
Maria Doa, onye isi nchịkwa nke amụma kemịkalụ na Environmental Defense Fund, kwuru na ojiji ogologo oge dị otú a ga-anọgide na-akpata ihe egwu nye obodo ndị bi nso ebe ndị a na-ahapụ. Doa kwuru na Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi kwesịrị ibelata oge mwepụ ahụ ma ọ bụ tinye mmachi ọzọ na mwepụta methylene chloride sitere na osisi ndị a.
Ka ọ dị ugbu a, American Chemistry Council, otu azụmaahịa na-anọchite anya ndị na-emepụta kemịkalụ, kwuru na iwu ndị a tụrụ aro nwere ike imetụta usoro ọkọnọ. Otu ahụ kwuru na nkwupụta na mbelata ngwa ngwa na mmepụta methylene chloride ga-eme ka mbelata ihe karịrị ọkara belata. Otu ahụ kwuru na mbelata ahụ nwere ike inwe "mmetụta domino" na ụlọ ọrụ ndị ọzọ dịka ọgwụ, ọkachasị ma ọ bụrụ na "ndị na-emepụta ihe ekpebie ịkwụsị mmepụta kpamkpam."
Methylene chloride bụ nke abụọ n'ime kemịkal iri nke Ụlọ Ọrụ Nchedo Gburugburu Ebe Obibi na-eme atụmatụ ịtụle maka ihe egwu nwere ike ibute ahụike mmadụ na gburugburu ebe obibi. Nke mbụ, ọ bụ asbestos. Freedhoff kwuru na iwu maka ihe nke atọ, perchlorethylene, nwere ike ịdị ka iwu ọhụrụ maka methylene chloride, gụnyere mmachibido iwu na nchebe siri ike nke ndị ọrụ.