Kev Txheeb Xyuas Txog Bisphenol A BPA
Chiv thawj tsim tawm xyoo 1936 ua cov tshuaj estrogen hluavtaws, bisphenol A (BPA) tam sim no tsim tawm ntawm qhov ntim txhua xyoo tshaj 6 billion phaus. Bisphenol A BPA feem ntau yog siv los ua lub tsev thaiv rau cov yas polycarbonate, uas pom muaj nyob rau hauv cov khoom xws li lub raj mis menyuam yaus, lub raj mis dej, epoxy resins (txheej txheej txheej hauv cov thawv zaub mov), thiab cov tshuaj pleev hniav dawb. Nws kuj tseem siv ua cov khoom ntxiv rau lwm hom yas rau kev tsim cov khoom ua si menyuam yaus.

Cov tshuaj Bisphenol A BPA tsim cov polymers los ntawm "ester bonds" los tsim cov yas polycarbonate. Ua ib qho tseem ceeb ntawm polycarbonate, BPA yog cov tshuaj lom neeg tseem ceeb hauv hom yas no.

Bisphenol A - lub hauv paus tseem ceeb hauv kev tsim cov polycarbonate, ua rau cov yas muaj kev pom tseeb thiab kev tiv taus kev cuam tshuam zoo heev. Nyem qhov no kom tau txais cov lus hais luv nqi thiab cov kev pabcuam pab pawg rau Bisphenol A.