Bisphenol A (BPA): Nibii ni Tsuɔ Nii Wulu lɛ A-Tsumalɔ Titri

Yɛ - shishijee nibii ni kɔɔ gbɔmɔtsoŋ kɛ tsofafeemɔ he lɛ amlipɛimɔ ni mli kwɔ

Molekular gbɛjianɔtoo krɛdɛɛ: BPA mli tsɔne lɛ ji nɔ ni feɔ phenolic hydroxyl kui enyɔ ni kɛ propane fã ko ni yɔɔ tsɔne mli lɛ tsa. Nɛkɛ gbɛjianɔtoo nɛɛ haa enáa tsofa nitsumɔ krɛdɛɛ ko. Phenolic hydroxyl kui enyɔ lɛ haa BPA lɛ feɔ nucleophilicity ni mli wa, ni no haa ekɛ nibii srɔtoi ni yɔɔ mli lɛ feɔ ekome. Yɛ nakai beaŋ nɔŋŋ lɛ, propane skeleton lɛ haa molecule lɛ feɔ nɔ ni wa kɛ steric gbɛtsii nii ko, ni enáa BPA lɛ halamɔ kɛ nitsumɔ nɔ hewalɛ yɛ tsofai sɔrɔtoi amli.

Gbɔmɔtsoŋ nibii: BPA yɛ 158 - 159°C, 400.8°C, kɛ 1.195g/cm3. E-shãa ni nɔ kwɔ kɛ shãa hei lɛ haa ehiɔ shi yɛ dɔlɛ kɛ nɔnyɛɛ shishi, yɛ be mli ni e-density ni sa lɛ tsuɔ gbɛfaŋnɔ ko he nii yɛ nitsumɔ shihilɛi ni biɔ nibii pɔtɛɛ density, tamɔ yɛ plastics kɛ resins komɛi ahe saamɔ mli, he ni density sui ni yɔɔ BPA lɛ baanyɛ aná gbɔmɔtsoŋ nibii kɛ naagbee nibii ni afee lɛ nɔ hewalɛ. Eshɛɔ fioo yɛ carbon tetrachloride mli, eshɛɛɛ nu mli kwraa, shi eshɛɔ yɛ nibii srɔtoi ni afɔɔ namɔ ni haa mɔ he jɔɔ lɛ amli, ni nɛkɛ shwiemɔ su nɛɛ ji nɔ ni tsɔɔ bɔ ni etsuɔ ​​nii eha kɛ gbɛi ni etsɔɔ nɔ ekɛtsuɔ nii yɛ nibii srɔtoi ni haa mɔ he jɔɔ lɛ amli.

Nitsumɔi Titrii yɛ Nitsumɔi Srɔtoi Amli

Plastic kɛ Resin feemɔ:
Polycarbonate (PC) Nifeemɔ: BPA ji nɔ titri ni akɛfeɔ polycarbonate (PC) lɛ. Polycarbonate damɔ shi shiŋŋ yɛ nibii babaoo amli yɛ bɔ ni ekwɛɔ nii jogbaŋŋ ehaa lɛ hewɔ (kane ni tsɔɔ mli fe 90%), bɔ ni enyɛɔ etswaa nibii ni etswaa lɛ (250 - 300 to glase folo lɛ nɔ), bɔ ni ehiɔ shi jogbaŋŋ yɛ ŋwɛigbɛ, kɛ bɔ ni enyɛɔ eshiɔ dɔlɛ (dɔlɛ ni tsɔɔ dɔlɛ ni shɛɔ 130 - 140°C) lɛ hewɔ. Yɛ tsɔnei kɛ tsɔnei ahe nitsumɔ mli lɛ, akɛ PC tsuɔ nii babaoo kɛfeɔ kɔmpiutai, tɛlifoŋ bibii, kɛ tsɔnei krokomɛi ahe nibii, ni jeee akɛ ehaa hebuu ni anyɛɔ akɛ he fɔ̃ɔ nɔ kɛhaa mligbɛ nibii ni yɔɔ pɛpɛɛpɛ lɛ pɛ kɛkɛ shi moŋ ehaa jarayeli akaŋshii yaa hiɛ yɛ amɛhefɛo kɛ amɛhefɛo kpakpa lɛ hewɔ. Yɛ tsɔnei ahe nitsumɔhe lɛ, akɛ PC feɔ tsɔne kanei ahe tsɔi, tsɔnei ahe nibii, kɛ nibii krokomɛi. Nibii ni yɔɔ tsɔne lɛ hiɛ lɛ haa kane ni tsoɔ gbɛkɛ mli lɛ kpɛɔ, yɛ be mli ni nibii ni akɛtsuɔ nii lɛ ahe mfoniri lɛ haa anáa nɔmimaa akɛ abuaa nibii lɛ anaa pɛpɛɛpɛ ni anyɛɔ akɛ he fɔ̃ɔ nɔ be kakadaŋŋ. Yɛ tsumaa nitsumɔ lɛ mli lɛ, akɛ PC - ni akɛfee hulu la ni tsoɔ, kanei ni akɛkpɛɔ nii, kɛ nibii krokomɛi tsuɔ nii babaoo yɛ maŋ tsũi tamɔ jarayeli hei wuji kɛ shwɛmɔhei yɛ bɔ ni amɛteɔ shi amɛwoɔ nibii ni tswaa kɛ la ni tsɔɔ mli jogbaŋŋ lɛ hewɔ, ni ehaa shĩa mli hei ni kpɛɔ ni yɔɔ shweshweeshwe lɛ baa.

Epoxy Resin He Nitsumɔ: BPA hu ji nɔ ko ni he hiaa waa ni akɛsaa epoxy resin. Epoxy resins lɛ yɛ nɔ ni hi jogbaŋŋ ni ekɛkpɛtɛɔ nii ahe, ni ebaanyɛ ekɛ nibii srɔtoi tamɔ dade, tsei, kɛ glase akpɛtɛ he jogbaŋŋ, no hewɔ lɛ ehiɛ gbɛhe ko ni he hiaa waa yɛ nɔ ni akɛkpɛtɛɔ nii ahe lɛ mli. Yɛ kɔɔyɔŋ lɛlɛ nitsumɔhe lɛ, akɛ epoxy - ni akɛkpɛtɛɔ nii ahe lɛ tsuɔ nii kɛkpɛtɛɔ kɔɔyɔŋ lɛlɛ he nibii ahe koni kɔɔyɔŋ lɛlɛ he nibii lɛ ahi shi jogbaŋŋ ni ehi shi shweshweeshwe yɛ kɔɔyɔŋ lɛlɛ shihilɛi ni mli wawai amli. Yɛ nakai beaŋ nɔŋŋ lɛ, epoxy resins lɛ yɛ tsofai ni hi jogbaŋŋ ni nyɛɔ eshiɔ nibii ni fiteɔ nii kɛ nibii ni akɛwoɔ mli lɛ amli, ni akɛtsuɔ nii babaoo yɛ tsɔnei ni akɛwoɔ nibii amli kɛ nibii ni akɛwoɔ mli lɛ amli. Akɛ nɔkwɛmɔnɔ lɛ, bei pii lɛ, akɛ epoxy resin woɔ circuit boards ni yɔɔ tsɔnei amli lɛ amli koni ebu tsɔne mli nibii ahe kɛjɛ shihilɛ ni jɛɔ kponɔgbɛ lɛ mli nibii ni fiteɔ nii lɛ ahe, ni eha tsɔnei lɛ ahi shi jogbaŋŋ ni amɛtsu nii jogbaŋŋ. Yɛ nɔ ni akɛwoɔ tsɔne mli lɛ mli lɛ, akɛ epoxy resin tsɔnei ni akɛwoɔ dade nɔ lɛ tsuɔ nii kɛbuɔ dade he, ni baanyɛ adamɔ tsofai tamɔ acid kɛ alkali ni fiteɔ nii lɛ anɔ jogbaŋŋ, ni eha dade nibii lɛ asɛɛ atsɛ.

Tsofai kpakpai krokomɛi ni akɛtsuɔ nii:
Nibii ni Haa La Shãa: Abaanyɛ afee nibii ni haa la shãa tamɔ tetrabromobisphenol A kɛjɛ BPA mli. Nibii ni haa la sɛɛ foɔ lɛ ni akɛfataa he lɛ he hiaa waa yɛ nitsumɔhei tamɔ plastic nibii kɛ atadei ahe nitsumɔi amli. Yɛ plastic nibii amli lɛ, nibii ni tsiɔ la naa lɛ baanyɛ aha nibii ni shãa lɛ aba shi jogbaŋŋ. Kɛji akɛ la jɛɛhe ko ba lɛ, kɔɔyɔɔ ni efite ni shãaa loo carbonaceous layer ni afee ni la ni tsiɔ la naa lɛ feɔ lɛ baanyɛ atsĩ kɔɔyɔɔ ni haa wala yibii kɛ dɔlɛ yaa lɛ naa ni etsi la ni shãa lɛ gbɛfaŋnɔ naa. Akɛ nɔkwɛmɔ nɔ lɛ, kɛ́ akɛ nibii ni tsiɔ la naa fata plastic ni akɛwoɔ tsɔnei kɛ tsɔnei ni akɛtsuɔ nii yɛ tsɔne mli lɛ ahe lɛ, ebaanyɛ eba la he oshara lɛ shi waa ni ebu gbɔmɛi awala kɛ amɛnibii ahe. Yɛ atadei amli lɛ, nibii ni haa la shãa lɛ ni akɛtsuɔ nii lɛ baanyɛ aha atadei akashã oya kɛ́ amɛkɛ la jɛɛhe kpe, ni ebaaha awui ni atadei ni shãa yɛ la mli lɛ kɛbaa lɛ aba shi.

Nibii ni haa mɔ he waaa kɛ nibii ni haa hulutsoo baa: Abaanyɛ akɛ BPA atsu nii akɛ nɔ ni haa gbɔmɔtso lɛ mli dɔlɛ baa shi yɛ plastic kɛ rɔba nibii komɛi amli. Yɛ be mli ni atsuɔ plastic he nii lɛ, nibii tamɔ hulutsoo ni naa wa kɛ kɔɔyɔɔ ni haa wala yibii lɛ yaa hiɛ lɛ haa plastic lɛ daa ni efiteɔ oya, ni enɛ saa nibii ni akɛtsuɔ nii lɛ ahe kɛ bɔ ni amɛtsuɔ nii amɛhaa lɛ he. Ákɛ tsofa ni gbeɔ helai lɛ, BPA baanyɛ amɔmɔ free radicals ni yɔɔ plastic gbɛjianɔtoo lɛ mli lɛ, ni etsĩ nibii ni haa wala yibii lɛ shwieɔ shi lɛ anaa, ni ekɛ plastic lɛ agbɔlɛ sɛɛ tsɛɔ. Yɛ nakai beaŋ nɔŋŋ lɛ, akɛni eji nɔ ni haa hulutsoo lɛ yaa hiɛ hewɔ lɛ, BPA baanyɛ aha plastic lɛ ahi shi jogbaŋŋ yɛ hei ni hulutsoo be lɛ yaa hiɛ waa lɛ, ni etsi plastic lɛ naa koni ekafite, ehiɛ akatsake, ni ekɛ naagbai krokomɛi aba beni atsuɔ he nii loo akɛtsuɔ nii lɛ. Yɛ rɔbɔt nibii amli lɛ, BPA hu baanyɛ atsu gbɛfaŋnɔ ni tamɔ nakai nɔŋŋ he nii, ni eha rɔbɔt lɛ mli dɔlɛ kɛ kɔɔyɔɔ ni haa wala yibii lɛ nyɛɔ edaa lɛ aya hiɛ, ni eha rɔbɔt nibii tamɔ tsɔne tai kɛ rɔbɔt nibii ni akɛwoɔ tsɔne mli lɛ asɛɛ atsɛ.

Shweshweeshwefeemɔ He Saji kɛ Nitsumɔhei Ahetooi

Hewalɛ He Osharai Amli Taomɔ: BPA lɛ yɛ tsofa ko ni gbeɔ mɔ fioo ni ebaanyɛ efã kɛya he kroko ni etsake yɛ shihilɛ mli kɛ adesa gbɔmɔtso lɛ mli. Nibii amlipɛimɔi babaoo etsɔɔ akɛ BPA yɛ estrogen - tamɔ nɔ ni ebaanyɛ ekɛgbala gbɔmɔtso lɛ mli nibii ni haa mɔ he jɔɔ lɛ. Titri lɛ, kɛha gbekɛbii bibii lɛ, amɛfɔmɔ gbɛjianɔtoo lɛ shweremɔ baanyɛ aná helai, ni ekɛ helai ni kɔɔ fɔmɔ gbɛjianɔtoo he lɛ aba. Yɛ nakai beaŋ nɔŋŋ lɛ, BPA lɛ hu baanyɛ aha insulin lɛ akatsu nii, ni ekɛ helai tamɔ sugar ni fa yɛ lá mli kɛ shwiili mli shwiili baa. Koolooi ahe niiamlipɛimɔi komɛi etsɔɔ akɛ koolooi ni akaa amɛ akwɛɔ ni akɛ BPA woɔ amɛmli be kakadaŋŋ lɛ fɔmɔ nibii ni haa mɔ he jɔɔ lɛ yaa hiɛ jogbaŋŋ, ni amɛjeŋba hu tsakeɔ. Eyɛ mli akɛ niiamlitaomɔ ni kɔɔ bɔ ni BPA lɛ saa adesai ahewalɛ he lɛ he lɛ yaa nɔ lolo moŋ, shi maji babaoo efee nɔ ko koni amɛkɛtsi BPA ni akɛtsuɔ nii yɛ nibii pɔtɛɛ komɛi amli lɛ naa yɛ hewalɛnamɔ he osharai ahe haomɔ hewɔ.

Nitsumɔhei ashishijee kɛ mlai ahe nitsumɔ: Yɛ shweshweeshwefeemɔ he ŋwanejeei ni yɔɔ BPA he lɛ hewɔ lɛ, maji kɛ kpokpai babaoo ni yɔɔ je lɛŋ fɛɛ lɛ kɛ mlai ni sa eba yɛ sɛɛ mli koni akɛtsi ekɛ nitsumɔ naa. Yɛ afi 2011 lɛ, China Hewalɛ He Nitsumɔhe lɛ kɛ nitsumɔhei krokomɛi enumɔ wo mla ko ni guɔ akɛ akatsu BPA he nii yɛ gbekɛbii amli nu ni akɛwoɔ mli lɛ feemɔ, ni akɛbaajɛ maŋsɛɛ aba, kɛ nihɔɔmɔ mli lɛ he. Maji kɛ kpokpai tamɔ United States, Canada, kɛ European Union lɛ hu efo BPA ni akɛtsuɔ nii yɛ niyenii ni akɛwoɔ kotokui amli, nibii ni akɛfeɔ gbekɛbii bibii, kɛ nibii krokomɛi amli lɛ mli yɛ gbɛ ni nyiɛ sɛɛ nɔ. Yɛ nɛkɛ mlai ahe taomɔ nii nɛɛ ahewɔ lɛ, nitsumɔhe lɛ miitao nibii krokomɛi ni akɛtoɔ BPA najiaŋ, tamɔ bisphenol S (BPS) kɛ diphenyl sulfone. Yɛ nakai beaŋ nɔŋŋ lɛ, nitsumɔhei ni feɔ nibii lɛ miiya nɔ amɛmiifee nibii ni amɛfeɔ lɛ jogbaŋŋ ni amɛmiiwo nibii ni hi jogbaŋŋ lɛ anɔ hewalɛ koni amɛba BPA ni fãa kɛyaa hei krokomɛi lɛ shi, ni amɛshɛ mlai ni mli wa ni yaa hiɛ lɛ ahe kɛ mɛi ni heɔ nii lɛ ataomɔi kɛha nibii ni amɛfeɔ lɛ ahe shweshweeshwefeemɔ he yɛ yiŋtoo ni ji nibii ni amɛfeɔ lɛ jogbaŋŋ lɛ nɔ. Yɛ polycarbonate kɛ epoxy resins lɛ feemɔ gbɛjianɔtoo lɛ mli lɛ, nitsumɔhei lɛ haa BPA tsakemɔ lɛ yaa hiɛ ni amɛhaa BPA ni eshwɛ ni etsuuu nii yɛ nibii amli lɛ baa shi kɛtsɔ nibii ni afeɔ lɛ ahe shihilɛi ni yaa hiɛ kɛ nibii ni haa tsɔne lɛ tsuɔ nii jogbaŋŋ lɛ anɔ.

Nibii pɔtɛɛ

Wolo ni Kwɛɔ Nɔ ni Hi jogbaŋŋ lɛ Nɔ

Mɛni Hewɔ Esa akɛ Wɔhala Wɔ BPA lɛ?

Wɔkɛ wɔhe ewo mli akɛ wɔkɛ BPA nibii ni hi jogbaŋŋ ni tsuɔ nii jogbaŋŋ lɛ baaha. Nɔ fɛɛ nɔ ni jɛɔ nibii ni akɛtsuɔ nii lɛ ahe nitsumɔ mli kɛyaa nibii afeemɔ kɛ nitsumɔ mli lɛ nyiɛɔ gbɛjianɔtoi ni mli wa ni akɛkwɛɔ nibii ni akɛtsuɔ nii lɛ anɔ jogbaŋŋ lɛ sɛɛ koni ana nɔmimaa akɛ nibii lɛ ahe tse waa, muji fioo pɛ yɔɔ mli, ni nibii fɛɛ ni tsɔɔ lɛ lɛ kɛ nitsumɔhe lɛ shishitoo mlai ni nɔ kwɔlɔ lɛ kpãa gbee. Wɔyɛ R & D kuu ko ni he esa ni baanyɛ aha tsabaai ni ato he gbɛjianɔ yɛ mɛi ni heɔ nii lɛ ahiamɔ nii srɔtoi anaa koni eye ebua mɛi ni heɔ nii lɛ ni amɛná nibii heei kɛ hiɛyaa yɛ nibii tamɔ plastic, resin, kɛ tsofai kpakpai amli. Yɛ nakai beaŋ nɔŋŋ lɛ, wɔyɛ nibii ni akɛhaa lɛ ahe gbɛjianɔtoo he nyɛmɔi ni tsuɔ nii jogbaŋŋ koni wɔkwɛ koni nibii ni akɛhaa lɛ aba yɛ be ni sa mli ni ehi shi jogbaŋŋ koni wɔkɛtsu mɛi ni heɔ nii lɛ ahiamɔ nii ni fa babaoo lɛ ahe nii. Yɛ nitsumɔhe lɛ sɛɛgbɛ nibii ni kɔɔ BPA shweshweeshwefeemɔ he naataamɔi ahe lɛ, wɔkɛ wɔjwɛŋmɔ maa mlai ahe nitsumɔ nɔ jogbaŋŋ, wɔkɛ wɔshika woɔ R & D nibii amli daa, ni wɔwoɔ nibii ni afeɔ lɛ ahe nitsumɔ ni haa mɔ tsui nyɔɔ emli ni yɔɔ shweshweeshwe lɛ he hewalɛ koni wɔkɛ nibii ni kɛ mlai lɛ kpãa gbee ni anyɛɔ akɛ he fɔ̃ɔ nɔ lɛ aha mɛi ni heɔ nii lɛ.

Halamɔ wɔ BPA lɛ, okɛ oniji afee ekome kɛfee hiɛyaa ni yaa nɔ yɛ nibii ni tsuɔ nii jogbaŋŋ lɛ ahe nitsumɔ mli, okɛ naagbai akpee, ni okɛ sɛɛnamɔ babaoo aba.