[Bis (2-chloroethyl) ʻetera (CAS # 111-44-4)], hoʻohana nui ʻia ka dichloroethyl ether ma ke ʻano he kemika waena no ka hana ʻana i nā pesticides, akā i kekahi manawa hiki ke hoʻohana ʻia me kahi mea hoʻoheheʻe a me ka mea hoʻomaʻemaʻe. Hoʻonāukiuki ʻo ia i ka ʻili, nā maka, ka ihu, ka ʻāʻī a me nā akemāmā a hoʻonāukiuki.
1. Pehea e loli ai ka dichloroethyl ether i ke kaiapuni?
Dichloroethyl ether i hoʻokuʻu ʻia i ka lewa e hana me nā kemika ʻē aʻe a me ka lā e decomposed a hemo ʻia mai ka ea e ka ua.
E hoʻopau ʻia ʻo Dichloroethyl ether e nā koʻohune inā aia i loko o ka wai.
ʻO ka ʻāpana o ka dichloroethyl ether i hoʻokuʻu ʻia i ka lepo e kānana ʻia a komo i loko o ka wai lepo, e hoʻopau ʻia kekahi e nā bacteria, a ʻo ka ʻāpana ʻē aʻe e evaporate i ka ea.
ʻAʻole hōʻiliʻili ʻo Dichloroethyl ether i ka kaulahao meaʻai.
2. He aha ka hopena o ka dichloroethyl ether i koʻu olakino?
ʻO ka hōʻike ʻana i ka dichloroethyl ether hiki ke hōʻoluʻolu i ka ʻili, nā maka, ka puʻu a me nā akemāmā. ʻO ka hoʻohaʻahaʻa haʻahaʻa i nā kukuna o ka dichloroethyl ether hiki ke hana i ka ʻeha a me ka ihu a me ka ʻāʻī ʻole. Hōʻike nā haʻawina holoholona i nā ʻōuli e like me ka mea i ʻike ʻia i loko o nā kānaka. Hoʻopili kēia mau ʻōuli i ka huhū i ka ʻili, ihu, a me nā akemāmā, hōʻino māmā, a me ka hōʻemi ʻana o ka nui o ka ulu. He 4 a 8 paha mau lā no ke ola kino ʻana o nā holoholona o ke keʻena hoʻokolohua.
3. Nā kānāwai a me nā kānāwai kūloko a me nā ʻāina ʻē
Kākoʻo ka US Environmental Protection Agency (US EPA) i ka waiwai o ka dichloroethyl ether i ka wai kai a me nā kahawai e kaupalena ʻia ma lalo o 0.03 ppm e pale ai i nā pilikia olakino i hoʻokumu ʻia e ka inu ʻana a ʻai ʻana paha i nā kumu wai i hoʻohaumia ʻia. Pono e hoʻomaopopo i kahi hoʻokuʻu ʻana ma mua o 10 mau paona o dichloroethyl ether i ke kaiapuni.
ʻO ka hana a Taiwan e hana nei i ka ea e ʻae ʻia ka standard konsentration e hōʻike i ka maʻamau o ka dichloroethyl ether (Dichloroethyl ether) ma kahi hana no ʻewalu mau hola i kēlā me kēia lā (PEL-TWA) he 5 ppm, 29 mg / m3.
Ka manawa Post: Nov-11-2020