He Tirohanga Whānui mō te Bisphenol A BPA
I te tau 1936 i hangaia ai te bisphenol A (BPA) hei estrogen hangai, inaianei kua neke atu i te 6 piriona pauna te nui o te bisphenol A i hangaia i ia tau. Ko te Bisphenol A BPA te mea e whakamahia whānuitia ana hei hanga kirihou polycarbonate, e kitea ana i roto i ngā hua pēnei i ngā pounamu pēpi, ngā pounamu wai, ngā kapia epoxy (ngā paninga e whakapuru ana i ngā ipu kai), me ngā hiri niho mā. Ka whakamahia hoki hei tāpiri i roto i ētahi atu momo kirihou hei hanga taonga takaro a ngā tamariki.

Ka hangaia e ngā ngota Bisphenol A BPA ngā pūmua mā roto i ngā "here ester" hei hanga kirihou polycarbonate. Hei wāhanga matua o te polycarbonate, ko te BPA te wāhanga matū matua o tēnei momo kirihou.

Ko te Bisphenol A – te wāhanga matua o te hanga polycarbonate, e whakarato ana i te māramatanga tino pai me te ātete ki te pānga ki ngā kirihou. Pāwhiri ki konei hei tiki i ngā utu whakaheke me ngā ratonga tīma mō te Bisphenol A.