Titanium dioxide (TiO2) yog cov khoom siv ntau yam thiab siv dav hauv ntau yam khoom siv niaj hnub, los ntawm cov tshuaj pleev thaiv hnub thiab tshuaj pleev ib ce rau cov khoom noj thiab tshuaj. Nws yog feem ntau siv los ua cov xim dawb vim nws qhov opacity siab thiab ci ntsa iab, ua rau nws yog ib qho tseem ceeb hauv ntau cov khoom siv. Txawm li cas los xij, puas yog titanium dioxide lom rau tib neeg? Muaj kev txhawj xeeb ntau ntxiv txog kev nyab xeeb ntawm titanium dioxide thiab nws muaj peev xwm cuam tshuam rau tib neeg kev noj qab haus huv.
Hauv qhov blog no, peb yuav tshawb xyuas cov yam ntxwv ntawm titanium dioxide, nws muaj peev xwm ua rau muaj kev phom sij rau kev noj qab haus huv, thiab kev ceev faj yuav tsum tau ua thaum siv cov khoom uas muaj cov khoom sib xyaw no.
I. Titanium Dioxide: txhais thiab cov yam ntxwv tseem ceeb
Titanium dioxide yog ib txwm muaj cov ntxhia sib xyaw nrog cov tshuaj formula TiO2. Nws muaj nyob rau hauv peb hom tseem ceeb: rutile, anatase, thiab brookite, nrog rau daim ntawv rutile yog feem ntau. Lub compound muaj peev xwm tawg lub teeb thiab nws qhov siab refractive index ua rau nws zoo tagnrho cov xim dawb hauv ntau daim ntawv thov. Nws yog siv rau hauv cov xim, coatings, yas, ntawv, thiab txawm inks, muab cov khoom ci thiab txaus nyiam.
Vim nws qhov xwm txheej tsis zoo, titanium dioxide raug suav tias muaj kev nyab xeeb rau kev siv dav dav thiab tau teev npe raws li Kev Pom Zoo Pom Zoo (GRAS) los ntawm US Food and Drug Administration (FDA) thaum siv hauv daim ntawv thov kev pom zoo.
Nyeem ntxiv: Dab tsi yog titanium dioxide? Titanium dioxide siv hauv cov yas
Txawm li cas los xij, puas yog titanium dioxide lom rau tib neeg? Kev txhawj xeeb tau tshwm sim txog qhov muaj feem cuam tshuam txog kev noj qab haus huv cuam tshuam nrog nws daim ntawv nanoparticle, uas feem ntau siv hauv cov tshuaj pleev thaiv hnub, tshuaj pleev ib ce, thiab qee yam khoom noj.
II. Muaj peev xwm noj qab haus huv muaj feem xyuam rau Titanium Dioxide
Hauv seem no, peb yuav teb cov lus nug "Puas yog titanium dioxide lom?"thiab kawm txog nws txoj kev pheej hmoo noj qab haus huv.
1. Kev pheej hmoo ntawm kev nqus pa:
Kev nqus pa ntawm titanium dioxide nanoparticles yog ib qho kev txhawj xeeb tseem ceeb thaum nws tuaj yeem ua rau muaj kev phom sij rau kev noj qab haus huv. Vim lawv qhov me me, cov nanoparticles no tuaj yeem yooj yim hauv huab cua thiab yuav nqus tau thaum siv cov khoom xws li tshuaj pleev thaiv hnub, tshuaj pleev ib ce, lossis thaum ua haujlwm hauv kev lag luam uas koom nrog kev tuav cov titanium dioxide. Thaum nqus tau, cov nanoparticles tuaj yeem ncav cuag qhov tob tob ntawm lub ntsws thiab ua rau lub ntsws o thiab oxidative kev nyuaj siab.
Ntau qhov kev tshawb fawb tsiaj tau pom qhov tsis zoo tshwm sim los ntawm kev nqus cov titanium dioxide nanoparticles. Ntev ntev raug rau siab ntau ntawm cov nanoparticles no tau txuas rau lub ntsws puas thiab muaj kev pheej hmoo ntawm mob ntsws cancer hauv cov tsiaj.
Txawm li cas los xij, nws yog ib qho tseem ceeb kom nkag siab tias kev tshawb fawb tsiaj yuav tsis txhais ncaj qha rau tib neeg kev noj qab haus huv. Lub cev cov lus teb rau nanoparticles tuaj yeem sib txawv ntawm cov tsiaj, ua rau nws nyuaj rau kev txiav txim siab qhov kev pheej hmoo rau tib neeg raws li cov ntaub ntawv tsiaj xwb.
2. Daim tawv nqaij ua xua:
Hauv kev siv tshuaj pleev ib ce xws li tshuaj pleev ib ce thiab cov khoom tu tawv nqaij, titanium dioxide nanoparticles tau ua rau muaj kev txhawj xeeb txog kev ua xua ntawm daim tawv nqaij, tshwj xeeb tshaj yog rau cov neeg uas muaj tawv nqaij rhiab heev. Thaum titanium dioxide nyob rau hauv nws daim ntawv loj dua feem ntau suav hais tias muaj kev nyab xeeb rau kev siv tshuaj pleev ib ce, qee qhov kev tshawb fawb tau pom tias nanoparticles tuaj yeem nkag mus rau ntawm daim tawv nqaij ntau dua, uas ua rau tawv nqaij khaus thiab mob.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias feem ntau ntawm cov khoom tu tawv nqaij thiab cov tshuaj pleev ib ce siv titanium dioxide hauv nws daim ntawv loj dua, uas tau txiav txim siab ua rau muaj kev pheej hmoo tsawg rau cov tawv nqaij khaus. Txawm li cas los xij, yog tias koj muaj cov tawv nqaij tshwj xeeb los yog tau ntsib kev khaus khaus nrog cov khoom uas muaj titanium dioxide, nws yuav tsum ceev faj kom zam lossis txwv kev siv cov khoom zoo li no.
3. Cov teebmeem ntawm plab hnyuv:
Titanium dioxide feem ntau yog siv los ua cov khoom noj ntxiv los txhim kho cov tsos ntawm ntau yam khoom noj, xws li khoom qab zib, pastries, thiab kua ntses. Nyob rau hauv cov ntsiab lus no, lub compound yog siv nyob rau hauv nws cov loj particle daim ntawv, uas yog feem ntau lees paub tias muaj kev ruaj ntseg los ntawm cov cai tswj. Txawm li cas los xij, qee qhov kev tshawb fawb tsiaj tau qhia tias kev siv tshuaj ntau ntawm titanium dioxide nanoparticles tuaj yeem ua rau lub plab hauv ob sab phlu, ua rau mob thiab cuam tshuam nrog kev nqus cov as-ham.
Nws yog ib qho tseem ceeb rau kev sib txawv ntawm daim ntawv nanoparticle siv nyob rau hauv qee cov neeg siv khoom thiab cov khoom siv loj dua siv hauv cov khoom noj khoom haus. Cov khoom loj dua hauv cov zaub mov tsis tau qhia txog qhov tsis zoo uas tshwm sim hauv cov kev tshawb fawb txog nanoparticles.
Txawm li cas los xij, raws li kev tiv thaiv kev tiv thaiv, nws raug nquahu kom tswj hwm kev noj zaub mov kom zoo thiab muaj ntau yam, suav nrog cov khoom noj uas tsis tau ua tiav, thiab txwv kev noj cov khoom lag luam hnyav uas muaj titanium dioxide.
4. Muaj peev xwm Carcinogenicity:
Lub Koom Haum Thoob Ntiaj Teb rau Kev Tshawb Fawb Txog Kev Mob Cancer (IARC) tau faib cov titanium dioxide li "tej zaum yuav ua rau tib neeg" (Pab 2B) thaum nqus tau rau hauv nws daim ntawv nanoparticle. Qhov kev faib tawm no yog ua raws li cov kev tshawb fawb uas pom tau tias muaj kev pheej hmoo ntawm mob ntsws cancer hauv cov tsiaj uas raug cov titanium dioxide nanoparticles siab. Txawm li cas los xij, nws yog ib qho tseem ceeb kom ua raws li kev faib tawm no nrog ceev faj thiab xav txog lwm yam tseem ceeb.
Ua ntej, kev faib tawm yog raws li kev tshawb fawb tsiaj, thiab cov txiaj ntsig yuav tsis txhais ncaj qha rau tib neeg kev noj qab haus huv. Qhov thib ob, cov kev tshawb fawb tau nthuav tawm cov tsiaj txhu kom muaj ntau dua ntawm cov nanoparticles ntau dua li qhov yuav tshwm sim hauv qhov tiag - lub neej scenarios. Tsis tas li ntawd, cov teebmeem tshwm sim hauv cov kev tshawb fawb tsiaj kuj tseem nyob ntawm seb qhov loj me, cov duab, thiab lub sijhawm ntawm qhov raug.
III. Kev Tiv Thaiv Kev Tiv Thaiv Tiv Thaiv Titanium Dioxide
Tam sim no peb tau teb cov lus nug "Puas yog titanium dioxide zoo rau koj?, cia peb kawm txog cov kev ceev faj uas yuav tsum tau siv titanium dioxide kom zoo.
1. Nyeem Cov Khoom Muag:
Raws li cov neeg siv khoom, nws yog ib qho tseem ceeb kom paub txog cov khoom koj siv. Thaum yuav khoom xws li tshuaj pleev thaiv hnub, tshuaj pleev ib ce, lossis qee yam khoom noj khoom haus, ua tib zoo nyeem cov ntawv sau thiab cov npe khoom. Saib rau qhov muaj titanium dioxide, thiab yog tias nws yog qhov ua rau muaj kev txhawj xeeb rau koj, xav txog kev xaiv cov khoom uas qhia meej txog qhov tsis muaj titanium dioxide nanoparticles.
2. Siv kev tiv thaiv kev nqus pa:
Hauv kev lag luam chaw uas cov neeg ua haujlwm tuaj yeem raug titanium dioxide nanoparticles, kev ntsuas kev nyab xeeb tsim nyog yuav tsum tau ua kom txo qis kev pheej hmoo ntawm kev nqus pa. Qhov no yuav suav nrog kev siv kev tiv thaiv ua pa, xws li lub qhov ncauj qhov ntswg lossis lub tshuab ua pa, txhawm rau tiv thaiv qhov nqus ntawm cov pa nanoparticles.
3. Patch Test Cosmetic:
Rau cov tib neeg uas muaj cov tawv nqaij rhiab heev, nws raug nquahu kom ua qhov ntsuas patch ua ntej siv cov tshuaj pleev ib ce lossis cov khoom tu tawv nqaij uas muaj titanium dioxide. Siv ib qho me me ntawm cov khoom mus rau thaj chaw tsis sib xws ntawm daim tawv nqaij thiab saib xyuas cov cim qhia ntawm kev khaus lossis kev ua xua. Yog tias muaj qhov tshwm sim tshwm sim, tsis txhob siv thiab sab laj nrog kws kho mob dermatologist.
4. txwv kev noj cov zaub mov ua tiav:
Thaum siv cov titanium dioxide ua cov khoom noj khoom haus feem ntau suav tias muaj kev nyab xeeb, nws yog ib qho kev coj ua zoo los txwv kev noj cov zaub mov hnyav heev thiab xaiv cov khoom siv ntuj tsim, tsis muaj kev hloov pauv thaum twg los tau. Kev tswj hwm kev noj zaub mov kom sib luag thiab sib txawv nrog kev tsom mus rau tag nrho cov khoom noj tuaj yeem ua rau muaj kev noj qab haus huv tag nrho thiab txo qhov muaj feem cuam tshuam rau cov khoom noj ntxiv.
