Ukumboza amathini okudla kunesikhathi eside futhi kuyisiko, njengoba ukumboza ohlangothini lwangaphakathi lwe-can-body kungavikela kahle okuqukethwe ethini ekungcoleni futhi kulondoloze phakathi nesikhathi eside sokugcina, thatha i-epoxy ne-PVC njengezibonelo, lezi ezimbili. ama-lacquers asetshenziselwa ukuhlanganisa ingxenye yangaphakathi ye-can-body ngenjongo yokuvimbela ukubola kwensimbi ngokudla okune-acidic.
I-BPA, emfushane ye-Bisphenol A, iwumsebenzi wokufaka we-epoxy resin coating. Ngokwe-Wikipedia, okungenani kunamaphepha esayensi ayi-16,000 ashicilelwe ngezimboni ezifanele ngodaba lwemiphumela yezempilo ye-BPA kanye nesihloko senkulumompikiswano ende yomphakathi neyesayensi. Ucwaningo lwe-kinetic olunobuthi lubonise ukuthi uhhafu wempilo ye-BPA kubantu abadala cishe amahora ama-2, kodwa ayiqoqi phakathi kwabantu abadala naphezu kokuchayeka kwe-BPA kuvamile. Eqinisweni, i-BPA ikhombisa ubuthi obunamandla obuphansi kakhulu njengoba kukhonjiswa yi-LD50 yayo ye-4 g/kg (igundane). Eminye imibiko yocwaningo ikhombisa ukuthi: inokucasuka okuncane esikhumbeni somuntu, okunomthelela ongaphansi kwe-phenol. Uma idliwe isikhathi eside ekuhlolweni kwezilwane, i-BPA ibonisa umphumela ofana ne-hormone ongaba nomthelela omubi ekuvundeni. Kungakhathaliseki ukuthi, imiphumela engemihle kubantu esongela impilo yabantu ayizange ibonakale, ngokwengxenye ngenxa yomthamo ophansi wokudla.
Ngokucabangela ukungaqiniseki kwesayensi, iziphathimandla eziningi ziye zathatha izinyathelo zokubhekana nenkinga yokunciphisa ukuchayeka ngesisekelo sokuqapha. Kuthiwa i-ECHA (ishosha elithi 'European Chemicals Agency') ibeke i-BPA ohlwini lwezinto ezikhathazayo kakhulu, ngenxa yezakhiwo ze-endocrine ezihlonziwe. Ngaphezu kwalokho, ngenxa yenkinga yezingane ezisanda kuzalwa zingase zibhekane nengozi enkulu kulolu daba, okuholela ekuvinjelweni kokusetshenziswa kwe-BPA emabhodleleni ezingane kanye neminye imikhiqizo efanele yi-US, Canada, kanye ne-EU phakathi kokunye.
Isikhathi sokuthumela: Jul-30-2022
