Titanium Dioxide Hauv Khoom Noj - Koj Puas Yuav Txhawj Xeeb?

Zoo Siab

• Siv thiab muaj txiaj ntsig
• Khoom noj khoom haus zoo
• Cov zaub mov khaws cia thiab ntim khoom
• Tshuaj pleev ib ce
• Txaus Nyiam
• Pawg 2B carcinogen
• Kev Tsis Txaus Siab
• Khoom siv txuam nrog
• Toom Kev lom zem
• Sab sij huam
• Koj yuav tsum zam nws?
• Hauv qab kab

Los ntawm dyes mus rau flavorings, ntau tus neeg tau nce hauv kev paub txog cov khoom xyaw hauv lawv cov zaub mov.

Ib qho ntawm cov zaub mov uas neeg siv ntau tshaj plaws yog titanium dioxide, cov ntxhiab tsw ntxhiab uas ua kom cov xim dawb lossis opacity ntawm cov zaub mov thiab cov khoom muag dhau los, suav nrog cov tshuaj pleev kas fes, khaub noom, tshuaj pleev thaiv hnub, thiab tshuaj txhuam hniav (,).

Kev hloov pauv ntawm titanium dioxide ntxiv rau txhim kho qhov xim dawb ntawm cov xim, plastics, thiab cov khoom lag luam ntawv, txawm tias cov kev hloov no txawv ntawm cov zaub mov-qib uas siv hauv cov khoom noj (,).

Tseem, koj yuav xav tias nws muaj kev nyab xeeb rau kev noj.

Kab lus no rov xyuas dua txog kev siv, txiaj ntsig, thiab kev nyab xeeb ntawm titanium dioxide.

Siv thiab muaj txiaj ntsig

Titanium dioxide muaj ntau lub hom phiaj nyob rau hauv kev tsim khoom noj khoom haus thiab khoom tsim khoom.

Khoom noj khoom haus zoo

Vim tias nws cov teeb pom kev zoo ntawm lub zog, cov me me ntawm titanium dioxide ntxiv rau qee yam khoom noj txhawm rau txhim kho lawv cov xim dawb lossis opacity (,).

Feem ntau cov zaub mov-qib titanium dioxide yog thaj tsam ntawm 200–300 nanometers (nm) hauv txoj kab uas hla. Qhov loj me no tso cai rau lub teeb tawg zoo tagnrho, uas ua rau muaj xim zoo tshaj ().

Txhawm rau ntxiv rau cov khoom noj, cov khoom noj ntxiv no yuav tsum ua tiav 99% kom huv. Txawm li cas los xij, qhov no yoojyim rau cov khoom noj muaj paug me me xws li cov hlau lead, arsenic, lossis mercury ().

Cov zaub mov ntau tshaj plaws nrog cov pa roj carbon dioxide yog cov zom khaub noom, khaub noom, ncuav mov, chocolate, chocolate kas fes, thiab ncuav mog qab zib kom zoo nkauj (,).

Cov zaub mov khaws cia thiab ntim khoom

Titanium dioxide ntxiv rau qee cov zaub mov ntim los khaws lub txee lub neej ntawm ib yam khoom.

Kev ntim ntim uas muaj cov khoom ntxiv no tau pom tias txo cov ethylene ntau lawm hauv cov txiv hmab txiv ntoo, yog li ncua qhov txheej txheem lub cev thiab ua kom ntev lub neej txee ().

Tsis tas li ntawd, cov kev ntim no tau pom tias muaj cov kab mob tua kab mob thiab ua haujlwm photocatalytic, tom kawg ntawm kev txo qis ultraviolet (UV) kev cuam tshuam ().

Tshuaj pleev ib ce

Titanium dioxide yog dav siv los ua cov xim txhim kho hauv cov tshuaj pleev ib ce thiab cov khoom lag luam zoo li lipsticks, tshuaj pleev thaiv hnub, tshuaj txhuam hniav, pleev thiab ua hmoov. Feem ntau nws pom raws li nano-titanium dioxide, uas yog me dua li cov zaub mov-qib version ().

Nws yog qhov tshwj xeeb tshaj yog nyob rau hauv tshuaj pleev thaiv hnub vim nws muaj kev tiv thaiv UV tiv thaiv zoo thiab pab thaiv lub hnub ci UVA thiab UVB los ntawm kev ncav cuag koj cov tawv nqaij ().

Txawm li cas los xij, vim tias nws lub zog tawm - txhais tau tias nws tuaj yeem txhawb dawb ntau dhau - nws yog feem ntau coated hauv silica lossis alumina kom tiv thaiv kev puas tsuaj ntawm tes uas tsis muaj txo nws cov cuab yeej tiv thaiv UV ().

Txawm hais tias cov tshuaj pleev ib ce tsis tau txhais rau kev noj, muaj kev txhawj xeeb tias titanium dioxide hauv mem pleev di ncauj thiab tshuaj txhuam hniav tuaj yeem nqos lossis nqus tau los ntawm daim tawv nqaij.

Vim tias nws qhov kev cuam tshuam lub teeb pom kev zoo, titanium dioxide siv hauv ntau cov khoom noj thiab cov khoom lag luam zoo nkauj los txhim kho lawv cov xim dawb thiab thaiv cov duab tshav ultraviolet.

Txaus Nyiam

Nyob rau xyoo lawm tsis ntev los no, kev txhawj xeeb txog kev pheej hmoo ntawm kev siv titanium dioxide tau nce.

Pawg 2B carcinogen

Lub Chaw Tswj Xyuas Khoom Noj thiab Tshuaj (FDA) muab cov titanium dioxide raws li pom tau tias muaj kev nyab xeeb (7).

Uas tau hais tias, Lub Koom Haum International rau Kev Tshawb Nrhiav Kab Mob Cancer (IARC) tau teev nws li pab pawg 2B carcinogen - tus neeg sawv cev uas tej zaum yuav mob nqaij hlav tab sis tsis muaj tsiaj txhu txaus thiab kev tshawb fawb. Qhov no tau ua rau muaj kev txhawj xeeb nws muaj kev nyab xeeb hauv cov khoom lag luam khoom noj (8, 9).

Qhov kev faib tawm no tau muab, raws li qee qhov kev tshawb fawb tsiaj pom tias nqus tau cov pa roj carbon dioxide dioxide ua rau muaj kev loj hlob ntawm cov qog ntshav. Txawm li cas los xij, IARC xaus lus tias cov khoom noj khoom noj uas muaj cov tshuaj ntxiv no tsis ua rau muaj kev pheej hmoo (8).

Yog li no, niaj hnub no, lawv tsuas yog pom zoo kom ua kom tsis txhob nqus cov pa dioxide titanium dioxide hauv kev lag luam nrog cov plua plav paug siab, xws li kev tsim cov ntawv (8).

Kev Tsis Txaus Siab

Muaj qee qhov kev txhawj xeeb txog daim tawv nqaij thiab txoj hnyuv nqus ntawm titanium dioxide nanoparticles, uas tsawg dua 100 nm hauv lub taub.

Qee qhov kev tshawb fawb kuaj ntshav me me tau qhia tias cov nanoparticles yog nqus tau los ntawm cov hnyuv hlwb thiab tuaj yeem ua rau oxidative kev nyuaj siab thiab mob cancer. Txawm li cas los xij, lwm cov kev tshawb fawb tau pom tias tsis muaj kev cuam tshuam (,,).

Ntxiv mus, kev tshawb fawb 2019 tau sau tseg tias cov zaub mov-qib titanium dioxide yog loj dua thiab tsis muaj nanoparticles. Li no, cov kws sau ntawv xaus lus tias txhua cov titanium dioxide hauv zaub mov yog nqus tau tsis zoo, ua rau tsis muaj kev phom sij rau tib neeg kev noj qab haus huv ().

Thaum kawg, kev tshawb fawb tau qhia tias titanium dioxide nanoparticles tsis dhau thawj txheej ntawm daim tawv nqaij - stratum corneum - thiab tsis yog carcinogenic (,).

Khoom siv txuam nrog

Qee qhov kev tshawb fawb hauv nas tau pom txog titanium dioxide ntau zuj zus hauv daim siab, tus po, thiab lub raum. Uas tau hais tias, feem ntau cov kev tshawb fawb siv cov koob tshuaj ntau dua li qhov koj yuav ib txwm haus, ua rau nws nyuaj rau paub tias cov teebmeem no yuav tshwm sim hauv tib neeg ().

Kev tshuaj xyuas xyoo 2016 los ntawm European Food Safety Authority tau txiav txim siab tias titanium dioxide nqus tau tsawg heev thiab qee qhov muaj feem cuam tshuam feem ntau raug tawm hauv cov quav (14).

Txawm li cas los xij, lawv tau pom tias qib me ntawm 0.01% tau nqus los ntawm lub cev tiv thaiv kab mob - paub tias yog plab-txuam lymphoid nqaij - thiab yuav raug xa mus rau lwm yam kabmob. Tam sim no, nws tseem tsis tau paub meej tias qhov no yuav cuam tshuam li cas rau tib neeg kev noj qab haus huv (14).

Txawm hais tias feem ntau cov kev tshawb fawb txog hnub qhia tsis muaj kev phom sij ntawm kev noj ntau dua ntawm titanium dioxide, ob peb lub sijhawm muaj kev tshawb fawb ntev rau tib neeg. Yog li, kev tshawb fawb ntxiv yog xav tau kom nkag siab zoo txog nws lub luag haujlwm hauv tib neeg kev noj qab haus huv (,).

Titanium dioxide yog faib ua Pawg 2B carcinogen raws li kev tshawb fawb tsiaj tau txuas nws txoj kev nqus pa mus rau kev mob qog. Txawm li cas los xij, tsis muaj kev tshawb fawb qhia pom tias titanium dioxide hauv zaub mov ua rau koj noj qab haus huv.

Toom Kev lom zem

Hauv Tebchaws Asmeskas, cov khoom lag luam tuaj yeem ntim tsis ntau tshaj 1% titanium dioxide hauv qhov hnyav, thiab vim nws lub peev xwm teeb pom kev zoo, cov tuam txhab ua zaub mov tsuas xav siv me me kom ua tiav cov txiaj ntsig ().

Cov menyuam yaus hnub nyoog qis dua 10 xyoo haus cov tshuaj noj kom ntau ntxiv, nrog qhov nruab nrab ntawm 0.08 mg rau ib phaus (0.18 mg rau ib kg) ntawm lub cev hnyav ib hnub.

Sib piv, qhov nruab nrab ntawm cov neeg laus noj ib ncig ntawm 0.05 mg rau ib phaus (0.1 mg rau ib kg) toj ib hnub, txawm hais tias cov lej no txawv (, 14).

Qhov no yog vim qhov tau txais cov khoom qab zib thiab khoom qab zib ntau dua los ntawm menyuam yaus, thiab lawv lub cev me me ().

Vim tias muaj qhov kev tshawb fawb muaj tsawg, muaj tsis muaj Kev Txais Cov Khoom Txais Niaj Hnub (ADI) rau titanium dioxide. Txawm li cas los xij, ib qho kev txheeb xyuas qhov tseeb los ntawm European Food Safety Authority pom tias tsis muaj kev cuam tshuam dab tsi hauv cov nas uas noj 1,023 mg rau ib phaus (2,250 mg rau ib kg) hauv ib hnub (14).

Tseem, tseem muaj kev tshawb fawb los ntawm tib neeg ntxiv.

Cov menyuam yaus noj cov pa roj carbon ntau tshaj plaws titanium dioxide vim nws qhov muaj peev xwm ntau hauv cov qhob noom thiab ncuav noom. Xav tau kev tshawb fawb ntxiv ua ntej ADI tuaj yeem tsim tau.

Sab sij huam

Muaj kev tshawb nrhiav tsawg tsawg ntawm cov kev mob tshwm sim ntawm titanium dioxide, thiab nws feem ntau nyob ntawm txoj kev nkag mus (,,):

• Qhov ncauj noj. Tsis muaj cov kev paub tshwm sim.
• Ob lub qhov muag. Cov kab ke tuaj yeem ua rau me me voos.
• Kev nqus tau. Ua pa hauv titanium dioxide hmoov av tau txuas rau kev mob ntsws hauv cov tsiaj txhu kev tshawb fawb.
• Daim tawv nqaij. Tej zaum yuav ua rau kev xaj me me.

Feem ntau cov kev mob tshwm sim yog cuam tshuam nrog cov nqus ntawm titanium dioxide plua plav. Yog li, muaj cov qauv kev lag luam nyob hauv qhov chaw kom txwv kev kis ().

Tsis muaj cov kev paub txog kev phiv los ntawm kev haus titanium dioxide. Txawm li cas los xij, kev tshawb fawb tsiaj qhia tias kev nqus tau cov plua plav tuaj yeem cuam tshuam nrog mob ntsws.

Koj yuav tsum zam nws?

Txog hnub no, titanium dioxide yog pom tias muaj kev nyab xeeb rau kev noj.

Feem ntau cov kev tshawb fawb xaus tias kev noj los ntawm cov zaub mov yog tsawg tsawg uas nws ua rau tsis muaj kev phom sij rau tib neeg kev noj qab haus huv (,,, 14).

Txawm li cas los xij, yog tias koj tseem xav kom zam kev haus dej ntxiv no, nco ntsoov nyeem cov zaub mov thiab dej haus cov ntawv sau kom zoo. Cov khaub noom zom khaub noom, ua mov paj, khoom qab zib, khob tshuaj ua kas fes, thiab ua cov ncuav mog qab zib yog cov zaub mov ntau tshaj plaws nrog cov pa roj carbon dioxide.

Nco ntsoov tias tej zaum yuav muaj kev lag luam sib txawv los yog cov npe cov npe dav rau cov chaw tsim khoom uas cov kws tsim khoom yuav sau npe xaiv "titanium dioxide," yog li nco ntsoov qhia koj tus kheej (17).

Xav txog titanium dioxide nyob rau hauv cov zaub mov feem ntau ua tiav, nws yooj yim zam los ntawm kev xaiv rau kev noj zaub mov ntawm cov zaub mov uas tseem tsis tau ua tiav.

Txawm hais tias titanium dioxide feem ntau pom tias muaj kev nyab xeeb, koj kuj tseem xav kom zam dhau qhov ntawd. Cov zaub mov ntau tshaj plaws nrog rau qhov sib ntxiv muaj xws li zom zom, ncuav qab zib, cov kas fes, thiab ua ncuav mog qab zib.

Hauv qab kab

Titanium dioxide yog ib yam khoom siv uas siv los ntxuav cov khoom noj khoom haus ntau ntxiv rau hauv cov khoom kom zoo nkauj, pleev xim, thiab cov ntawv lag luam.

Cov zaub mov nrog cov titanium dioxide yog feem ntau ua khaub noom, ncuav pastries, zom zom, khaub noom kas fes, khoom qab zib, thiab khoom qab zib ncuav.

Txawm hais tias muaj qee qhov kev txhawj xeeb txog kev nyab xeeb, titanium dioxide feem ntau pom zoo li kev nyab xeeb los ntawm FDA. Ntxiv mus, feem ntau cov neeg tsis haus ze li ntawm txaus los muab lub peev xwm ua kom raug mob.

Yog tias koj tseem xav kom tsis txhob muaj cov titanium dioxide, nco ntsoov nyeem cov ntawv sau kom zoo thiab lo rau kev ua kom tsawg tshaj plaws rau tag nrho cov zaub mov.