Niaj hnub no, ib qho ntawm peb cov neeg siv khoom xav tau BPA dawb hauv peb lub tshuab nqus tsev 12V, peb xav tsis thoob me ntsis hauv qhov yuav tsum tau ua.Tom qab nrhiav hauv internet.peb tau kawm ntau yam txog qhov no.Hauv qab no yog cov ntsiab lus los ntawm wiki.
Bisphenol A (BPA) yog ib qho organic synthetic compound nrog cov tshuaj formula (CH3)2C(C6H4OH)2 teej tug mus rau pawg diphenylmethane derivatives thiab bisphenols, nrog ob pawg hydroxyphenyl.Nws yog cov khoom tsis muaj xim uas yog soluble hauv cov kuab tshuaj organic, tab sis tsis zoo soluble hauv dej.Nws tau siv los ua lag luam txij li xyoo 1957.
BPA yog ua hauj lwm los ua tej yam yas thiab epoxy resins.BPA-based yas yog cov ntshiab thiab tawv, thiab ua rau ntau yam khoom siv, xws li cov fwj dej, cov khoom ua si, CDs, thiab DVDs.Epoxy resins uas muaj BPA yog siv los ua cov kav dej, raws li cov txheej txheem rau sab hauv ntawm ntau cov zaub mov thiab dej haus cov kaus poom thiab ua cov ntawv thermal xws li siv hauv cov ntawv txais nyiaj muag khoom.[2]Hauv xyoo 2015, kwv yees li 4 lab tonnes ntawm BPA cov tshuaj tau tsim los tsim cov yas polycarbonate, ua rau nws yog ib qho ntawm cov khoom ntim ntau tshaj plaws ntawm cov tshuaj tsim tawm thoob ntiaj teb.[3]
BPA nthuav tawm cov tshuaj estrogen mimicking, cov khoom zoo li cov tshuaj hormones uas ua rau muaj kev txhawj xeeb txog nws qhov tsim nyog hauv qee cov khoom siv thiab cov ntim khoom noj.Txij li xyoo 2008, ntau lub tseem fwv tau tshawb xyuas nws txoj kev nyab xeeb, uas ua rau qee tus neeg muag khoom tshem tawm cov khoom siv polycarbonate.Lub US Food and Drug Administration (FDA) tau xaus nws qhov kev tso cai ntawm kev siv BPA hauv cov me nyuam mos fwj thiab cov mis mos ntim cov mis mos, raws li kev lag luam tso tseg, tsis muaj kev nyab xeeb.[4]Cov European Union thiab Canada tau txwv tsis pub siv BPA hauv lub raj mis menyuam yaus.
FDA hais tias "BPA muaj kev nyab xeeb nyob rau theem tam sim no tshwm sim hauv cov khoom noj" raws li kev tshawb fawb dav dav, suav nrog ob txoj kev tshawb fawb ntxiv los ntawm lub koom haum thaum ntxov 2014.[5]European Food Safety Authority (EFSA) tau tshuaj xyuas cov ntaub ntawv tshawb fawb tshiab ntawm BPA hauv 2008, 2009, 2010, 2011 thiab 2015: EFSA cov kws tshaj lij tau xaus rau txhua lub sijhawm uas lawv tsis tuaj yeem txheeb xyuas cov pov thawj tshiab uas yuav ua rau lawv rov kho lawv cov kev xav tias qib paub. ntawm qhov raug rau BPA muaj kev nyab xeeb;Txawm li cas los xij, EFSA lees paub qee qhov tsis paub tseeb, thiab tseem yuav tshawb xyuas lawv ntxiv.[6]
Thaum Lub Ob Hlis 2016, Fabkis tau tshaj tawm tias nws npaj siab los tawm tswv yim BPA raws li REACH Txoj Cai Cov neeg sib tw cov tshuaj muaj kev txhawj xeeb heev (SVHC).[7]
Post lub sij hawm: Aug-29-2022