Namuhla, elinye lamaklayenti ethu lidinga i-BPA mahhala kumishini yethu yokuhlanza imoto eyi-12V, siyaxakeka kancane kule mfuneko.Ngemva kokusesha ku-inthanethi.sifunde okuningi ngalokhu.Okulandelayo okuqukethwe okuvela ku-wiki.
I-Bisphenol A (BPA) iyinhlanganisela ye-organic synthetic enefomula yamakhemikhali (CH3)2C(C6H4OH)2 eyingxenye ye-diphenylmethane derivatives nama-bisphenols, enamaqembu amabili e-hydroxyphenyl.Iqinile engenambala encibilika kuzincibilikisi zemvelo, kodwa ayincibiliki kahle emanzini.Isetshenziswe kwezohwebo kusukela ngo-1957.
I-BPA isetshenziswa ukwenza amapulasitiki athile nama-epoxy resins.Upulasitiki osuselwe ku-BPA ucacile futhi uqinile, futhi wenziwa izinto ezihlukahlukene ezivamile zabathengi, njengamabhodlela amanzi, izinto zezemidlalo, ama-CD, nama-DVD.Ama-epoxy resins aqukethe i-BPA asetshenziselwa ukuhlanganisa amapayipi amanzi, njengezingubo zokugqoka ngaphakathi kwamathini amaningi okudla neziphuzo kanye nasekwenzeni iphepha elishisayo njengalelo elisetshenziswa kumarisidi okuthengisa.[2]Ngo-2015, kulinganiselwa ukuthi amathani ayizigidi ezi-4 wamakhemikhali e-BPA akhiqizwa ukukhiqiza ipulasitiki ye-polycarbonate, okuyenza ibe ngeyomthamo omkhulu kakhulu wamakhemikhali akhiqizwa emhlabeni wonke.[3]
I-BPA ikhombisa ukulingisa kwe-estrogen, izakhiwo ezifana ne-hormone eziphakamisa ukukhathazeka ngokufaneleka kwayo kweminye imikhiqizo yabathengi nasezitsheni zokudla.Kusukela ngo-2008, ohulumeni abambalwa baye baphenya ukuphepha kwayo, okwenza abanye abathengisi bahoxise imikhiqizo ye-polycarbonate.I-US Food and Drug Administration (FDA) isiqede ukugunyazwa kwayo kokusetshenziswa kwe-BPA emabhodleleni ezingane kanye nokupakishwa kwefomula yezingane, ngokusekelwe ekushiyweni kwemakethe, hhayi ukuphepha.[4]I-European Union kanye neCanada bavimbele ukusetshenziswa kwe-BPA emabhodleleni ezingane.
I-FDA ithi "i-BPA iphephile emazingeni amanje okwenzeka ekudleni" ngokusekelwe ocwaningweni olubanzi, okuhlanganisa nezinye izifundo ezimbili ezikhishwe yi-ejensi ekuqaleni kuka-2014.[5]I-European Food Safety Authority (EFSA) ibuyekeze ulwazi olusha lwesayensi ku-BPA ngo-2008, 2009, 2010, 2011 kanye no-2015: Ochwepheshe be-EFSA baphetha ngaso sonke isikhathi ukuthi abakwazanga ukukhomba noma yibuphi ubufakazi obusha obungabaholela ekubuyekezeni umbono wabo wokuthi izinga elaziwayo. ukuchayeka ku-BPA kuphephile;nokho, i-EFSA iyakubona ukungaqiniseki okuthile, futhi izoqhubeka nokukuphenya.[6]
NgoFebhuwari 2016, iFrance yamemezela ukuthi ihlose ukuphakamisa i-BPA njengekhandidethi le-REACH Regulation elikhathazayo kakhulu (SVHC).[7]
Isikhathi sokuthumela: Aug-29-2022