Bisphenol A (BPA): Nu Vevitɔ Tutula Deŋgɔ - Dɔwɔwɔ Nuwo

In - depth Kuku ɖe Dzɔdzɔmeŋusẽŋununya ƒe Nɔnɔme Veviwo ŋu

Molekyulãwo ƒe Dɔwɔɖoɖo Tɔxɛ: Phenolic hydroxyl ƒuƒoƒo eve siwo do ƒome kple propane ƒe ƒunukpeƒee ye le BPA molecule la me. Dɔwɔnu sia naa atikewo ƒe dɔwɔwɔ tɔxɛ aɖe nɔa eŋu. Phenolic hydroxyl ƒuƒoƒo eveawo naa nucleophilicity sesẽ BPA, si wɔnɛ be wòte ŋu wɔa nu kple atike vovovowo. Le ɣeyiɣi ma ke me la, propane ƒe ƒunukpeƒea naa molecule la ƒe sesẽme kple steric mɔxenu aɖe, si kpɔa ŋusẽ ɖe BPA ƒe tiatiawɔwɔ kple dɔwɔwɔ dzi le atike vovovowo ƒe dɔwɔwɔ me.

Dzɔdzɔmeŋusẽ ƒe Nɔnɔmewo: BPA ƒe ʋeʋẽme nye 158 - 159°C, eƒe dzoxɔxɔ dea 400.8°C, eye eƒe ʋeʋẽme anɔ abe 1.195g/cm3 ene. Eƒe ʋeʋẽ kple dzoxɔxɔ ƒe teƒe kɔkɔwo kpɔa egbɔ be eli ke le dzoxɔxɔ kple nyaƒoɖeamenu si sɔ me, esime eƒe ʋeʋẽ si sɔ wɔa akpa aɖe le dɔwɔwɔ ƒe nɔnɔme siwo hiã be woatsɔ nu tɔxɛ aɖewo awɔ dɔe, abe le plastik kple aŋɔ aɖewo dzadzraɖo me ene, afisi BPA ƒe ʋeʋẽ ƒe nɔnɔmewo ate ŋu akpɔ ŋusẽ ɖe nu mamlɛawo ƒe dzɔdzɔmenɔnɔmewo kple aŋɔwɔwɔ ƒe dɔwɔwɔ dzi. Elɔ̃na vie le carbon tetrachloride me, melɔ̃na le tsi me kura o, gake melɔ̃na le lãmenugbagbeviwo ƒe ʋeʋẽ vovovo siwo bɔ me, eye ʋeʋẽ ƒe nɔnɔme siae ɖoa eƒe nuwɔna ƒe dɔwɔwɔ kple eŋudɔwɔwɔ ƒe mɔnuwo le ʋeʋẽ ƒe ɖoɖo vovovowo me.

Dɔwɔwɔ Veviwo le Agble Geɖewo Me

Plastik Kple Resin Wɔwɔ:
Polycarbonate (PC) wɔwɔ: BPA ye nye nu vevi si wozãna tsɔ wɔa polycarbonate (PC). Polycarbonate to vovo le go geɖe me le eƒe nukpɔkpɔ ƒe nukpɔkpɔ nyuie (kekeli ƒe kaka wu 90%), eƒe ŋusẽkpɔɖeamedzi sesẽ (250 - 300 zi gbɔ zi 250 - 300 wu glass dzro), eƒe didime ƒe liƒo nyui, kple dzoxɔxɔ ƒe tsitretsitsi (dzoxɔxɔ ƒe tɔtɔ ƒe dzoxɔxɔ va ɖo 130 - 140°C). Le elektrɔnikmɔ̃wo kple elektrikdɔwɔƒewo la, wozãa PC geɖe tsɔ wɔa kɔmpiutawo, asitelefonwo, kple elektrɔniknu bubuwo ƒe nutunuwo, si menye ɖeko wònaa ametakpɔnu si ŋu kakaɖedzi le na akpa siwo wɔa dɔ pɛpɛpɛ le ememe ko o, ke enaa adzɔnuwo ƒe hoʋiʋli le asi me hã nyona ɖe edzi le woƒe dzedzeme dzeani kple woƒe nɔnɔme nyui ta. Le ʋuwɔƒewo la, wozãa PC tsɔ wɔa ʋuwo ƒe akaɖiwo, dɔwɔnuwo, kple woƒe akpa bubuwo. Kekeli gã si le ŋgɔgbekaɖiwo ƒe nutsyɔnuwo ŋu nana be kekeli klẽna le zã me le ʋukuku me, evɔ alesi dɔwɔnuwo ƒe akpawo li ke le woƒe didime nu naa kakaɖedzi be woƒo wo nu ƒu pɛpɛpɛ eye kakaɖedzi le wo zazã ɣeyiɣi didi ŋu. Le xɔtudɔa me la, wozãa ɣe ƒe keklẽ ƒe ʋuƒo siwo PC - wɔ, akaɖi ƒe xɔtaxɔwo, kple nu bubuwo le dutoƒoxɔwo abe asitsaƒe gãwo kple bɔlƒoƒewo ene geɖe le woƒe tsitretsitsi ɖe ŋusẽkpɔɖeamedzi nu nyuie kple kekeli ƒe kaka ta, si wɔnɛ be xɔme teƒe siwo klẽna eye wole dedie.

Epoxy Resin ƒe wɔwɔme: BPA hã nye monomer vevi aɖe si wotsɔ dzraa epoxy resins ɖo. Epoxy-resinwo léna nyuie ŋutɔ eye woate ŋu abla nu vovovowo abe ga, ati, kple ahuhɔ̃e ene sesĩe, eyata woxɔa nɔƒe vevi aɖe le nulénu ƒe akpaa me. Le yamenutomeyimɔ̃dɔwɔƒewo la, wozãa nusiwo wotsɔ blaa yameʋu ƒe xɔtunuwo ƒe akpa siwo wotu ɖe epoxy dzi be woakpɔ egbɔ be yameʋua ƒe wɔwɔme le blibo eye wòle dedie le yameʋuɖoɖo ƒe nɔnɔme sesẽwo me. Le ɣeyiɣi ma ke me la, atikewo ƒe xɔxlɔ̃ kple nusiwo xea mɔ na dzoxɔxɔ ƒe nɔnɔme nyuiwo le epoxy-aŋɔwo ŋu eye wozãa wo geɖe le elektrɔnik-nubablɛwo kple nusiwo wotsɔ blaa nu me. Le kpɔɖeŋu me. Le nutsyɔtsyɔ ƒe akpa dzi la, wozãa epoxy resin ƒe nutsyɔnuwo hena ga ƒe anyigba takpɔkpɔ, si ate ŋu anɔ te ɖe atikewo abe acid kple alkali ƒe xɔxlɔ̃ nu nyuie eye wòana ganuwo ƒe dɔwɔwɔ nadidi ɖe edzi.

Atike Nyui Bubuwo Zazã:
Dzoxɔxɔnutsitikewo ƒe Dɔwɔwɔ: Woate ŋu awɔ dzotsinuwo abe tetrabromobisphenol A ene tso BPA me. Dzoxɔxɔnutsitike siwo wotsɔ kpe ɖe eŋu le vevie ŋutɔ le dɔwɔƒewo abe plastiknuwo kple avɔwo ene me. Le plastiknuwo me la, dzotsinuwo ate ŋu aɖe nuwo ƒe dzobibi dzi akpɔtɔ nyuie. Ne wotsɔe de dzotsoƒe me la, ya si gblẽ si mexɔ dzo o alo carbonaceous layer si wowɔ si dzotsinuwo wɔ ate ŋu axe mɔ na oxygen kple dzoxɔxɔ ƒe tsɔtsɔ yi teƒe bubu eye wòaxe mɔ ɖe dzobibi ƒe kaka nu. Le kpɔɖeŋu me, ne wotsɔ nusiwo xea mɔ na dzobibi dea elektrɔnik kple elektriknuwo ƒe aŋetuwo me la, ate ŋu aɖe dzo ƒe afɔkua dzi akpɔtɔ ŋutɔ eye wòakpɔ amewo ƒe agbe kple nunɔamesiwo ta. Le avɔwo me la, dzotsinuwo zazã ate ŋu ana awuwo nagatɔ dzo ne wodo go dzotsoƒe o eye wòaɖe nusiwo awuwo ƒe dzobibi le dzobibi me hena vɛ dzi akpɔtɔ.

Antioxidants kple Heat Stabilizers: Woate ŋu azã BPA abe antioxidant kple dzoxɔxɔ si naa dzoxɔxɔ nɔa te ɖe plastic kple rababa nu aɖewo me. Le plastikwo ŋudɔwɔwɔ me la, nusiwo abe dzoxɔxɔ si nu sẽ kple ɔksidzin ene hea plastikwo ƒe tsitsi kple woƒe gbegblẽ vɛ bɔbɔe, si kpɔa ŋusẽ ɖe adzɔnuwo ƒe dɔwɔwɔ kple woƒe dɔwɔwɔ ƒe agbenɔƒe dzi. Abe antioxidant ene la, BPA ate ŋu alé free radicals le plastic system me, axe mɔ na oxidation reactions ƒe kɔsɔkɔsɔ ƒe tɔtrɔ, eye wòahe plastic ƒe tsitsi ɖe megbe. Le ɣeyiɣi ma ke me la, abe dzoxɔxɔdzidzenu ene la, BPA ate ŋu ana plastikwo ƒe liƒo nanyo ɖe edzi le teƒe siwo dzoxɔxɔ le eye wòaxe mɔ na plastikwo ƒe gbegblẽ, amadede ƒe tɔtrɔ, kple kuxi bubuwo le wo ŋudɔwɔwɔ alo wo zazã me. Le rababanuwo me la, BPA ate ŋu awɔ akpa ma tɔgbe hã, si ana dzoxɔxɔ kple oxygen ƒe tsitsi ƒe tsitretsitsi nanyo ɖe edzi eye wòana rababanuwo abe ʋu ƒe tayawo kple rababa ƒe nutrenuwo ene ƒe agbenɔƒe nadidi ɖe edzi.

Dedienɔnɔ Ŋuti Nyaʋiʋliwo Kple Dɔwɔƒewo ƒe Ŋuɖoɖowo

Lãmesẽnyawo Me Dzodzro: Aɖi si mebɔ o le BPA me vaseɖe afi aɖe eye ate ŋu aʋu atrɔ le nutoa me kple amegbetɔ ƒe ŋutilã me. Numekuku gbogbo aɖewo ɖee fia be BPA ƒe ŋusẽkpɔɖeamedzi le abe estrogen ene eye ate ŋu ado kplamatse amegbetɔ ƒe lãmenugbagbeviwo ƒe dɔwɔwɔ. Vevietɔ le vidzĩwo gome la, woƒe vidzidzi ƒe tsitsi ate ŋu agblẽ nu le wo ŋu, si ahe dɔléle siwo do ƒome kple vidzidzi ƒe dɔwɔwɔ vɛ. Le ɣeyiɣi ma ke me la, BPA ate ŋu ahe insulin ƒe dɔlélenutsiŋutete hã vɛ, si ahe lãmesẽkuxiwo abe suklidɔ kple lolo akpa ene vɛ. Dodokpɔ aɖewo siwo wowɔ le lãwo ŋu ɖee fia be lã siwo wodo kpɔ siwo wotsɔ BPA do goe ɣeyiɣi didi la ƒe vidzidzi ƒe ŋutinuwo ƒe tsitsi kple nuwɔna ƒe tɔtrɔ siwo mesɔ o. Togbɔ be wogale numekuku wɔm tso ŋusẽ si BPA kpɔna ɖe amegbetɔ ƒe lãmesẽ dzi ŋu hã la, dukɔ geɖe wɔ afɔɖeɖewo be yewoaxe mɔ ɖe BPA zazã le atike tɔxɛwo me nu le esi wotsi dzi ɖe afɔku siwo le lãmesẽ me ŋu ta.

Dɔwɔƒewo ƒe Dɔwɔnawo Kple Sedziwɔwɔ ƒe Ŋgɔyiyi: Le BPA ƒe dedienɔnɔ ŋuti nyaʋiʋliwo ta la, dukɔ kple nuto geɖe le xexeame godoo to se siwo sɔ vɛ ɖe wo nɔewo yome be woatsɔ axe mɔ ɖe eƒe zazã nu. Le ƒe 2011 me la, China ƒe Lãmesẽnyawo Gbɔkpɔha kple dɔwɔƒe ade bubuwo de se be woagazã BPA le vidzĩwo ƒe notsi ƒe aŋetuwo wɔwɔ, wo tsɔtsɔ yi duta, kple wo dzadzra me o. Dukɔwo kple nutowo abe United States, Canada, kple Europa Dukɔwo ƒe Ðekawɔha hã ɖo seɖoƒe na BPA zazã le nuɖuɖu bablawo, vidzĩwo ƒe nuwɔna, kple dɔ bubuwo me ɖe wo nɔewo yome. Esi dɔwɔƒea dze ŋgɔ se ƒe nudidi siawo ta la, wole mɔnu bubu siwo woate ŋu azã ɖe BPA teƒe, abe bisphenol S (BPS) kple diphenyl sulfone ene, dim vevie. Le ɣeyiɣi ma ke me la, adzɔnuwo wɔwɔ ƒe dɔwɔƒewo le nuwɔwɔ ƒe ɖoɖowo nyom ɖe edzi ɣesiaɣi eye wole ŋusẽ dom woƒe nyonyome dzi kpɔkpɔ be woaɖe BPA ƒe ʋuʋu ƒe agbɔsɔsɔ dzi akpɔtɔ eye woawɔ ɖe sedede ƒe dzidzenu siwo le sesẽm ɖe edzi kple nuƒlelawo ƒe nudidiwo dzi le adzɔnuwo ƒe dedienɔnɔ ŋu le susu si nye be woakpɔ egbɔ be adzɔnuwo ƒe dɔwɔwɔ le dɔ wɔm nyuie ta. Le polycarbonate kple epoxy resins wɔwɔ me la, dɔwɔƒewo naa BPA ƒe tɔtrɔ ƒe agbɔsɔsɔme nyona ɖe edzi eye woɖea BPA si susɔ si mewɔ dɔ o le nusiwo wowɔ me dzi kpɔtɔna to nuwɔna ƒe nɔnɔmewo nyonyo kple nusiwo naa nu ʋãna ƒe ɖoɖowo wɔwɔ nyuie me.

Nusiwo wogblɔ tso eŋu

Dzɔdzɔmeŋusẽŋununya Dzikpɔgbalẽvi

Nukatae Nàtia Míaƒe BPA?

Míeɖoe kplikpaa be míana BPA-nu siwo ƒe nyonyome deŋgɔ eye woli ke - siwo wɔa dɔ nyuie. Kadodo ɖesiaɖe tso nu xoxowo ƒeƒle dzi va ɖo wo wɔwɔ kple wo ŋudɔwɔwɔ dzi zɔna ɖe nyonyomedzikpɔkpɔ ƒe ɖoɖo sesẽwo dzi be woakpɔ egbɔ be nuawo ƒe dzadzɛnyenye nyo, ɖiƒoƒo ʋɛ aɖewo koe le wo me, eye dzesiawo katã ɖo dɔwɔƒewo ƒe dzidzenu kɔkɔwo gbɔ. Míekpɔ dɔnyala bibiwo ƒe Numekuku kple Dɔwɔnawo ƒe ƒuƒoƒo si ate ŋu ana egbɔkpɔnu siwo wowɔ ɖe ɖoɖo nu le asisiwo ƒe nuhiahiã vovovowo nu be woakpe ɖe asisiwo ŋu woakpɔ nu yeyewo kple ŋgɔyiyi le agblewo abe plastik, aŋɔ, kple atike nyuiwo ene me. Le ɣeyiɣi ma ke me la, nuzazãwo ƒe kɔsɔkɔsɔ dzikpɔkpɔ ƒe ŋutete nyuiwo le mía si be míakpɔ egbɔ be wotsɔ adzɔnuwo vɛ le ɣeyiɣi nyuitɔ dzi eye woli ke be woakpɔ asisiwo ƒe nuwɔwɔ ƒe nuhiahiã gãwo gbɔ. Le dɔwɔƒea ƒe megbenyawo me le BPA dedienɔnɔ ŋuti nyaʋiʋliwo me la, míeléa ŋku ɖe sedede ƒe ŋusẽkpɔɖeamedziwo ŋu vevie, míedea ga Numekuku kple Dɔwɔnawo me ɣesiaɣi, eye míedoa nuwɔwɔ ƒe ɖoɖowo ƒe ɖɔɖɔɖo si me womezãa nu gbegblẽwo le o eye wòle dedie ɖe ŋgɔ be míana asisiwo nakpɔ adzɔnu siwo wɔ ɖeka kple seawo eye kakaɖedzi le wo ŋu.

Tia míaƒe BPA, ƒo ƒu awɔ ŋgɔyiyi ɖaa le nusiwo wɔa dɔ nyuie ƒe akpa dzi, dze ŋgɔ kuxiwo, eye nàwɔ asixɔxɔ geɖe wu.