AvobenzoneCAS70356-09-1 - Ib qho khoom tseem ceeb hauv kev tiv thaiv hnub thiab nws cov qauv kev lag luam

Nyob rau xyoo tas los no, nrog rau kev txhim kho ntawm tib neeg txoj kev paub txog kev tiv thaiv hnub, kev ua lag luam rau cov khoom tiv thaiv hnub tau qhia txog kev loj hlob sai. Ntawm ntau cov khoom xyaw tiv thaiv hnub, avobenzone, ua ib qho tshuaj tiv thaiv hnub tseem ceeb, tau txais kev saib xyuas dav dav.

Avobenzone yog ib yam khoom xyaw uas yaj tau hauv roj, thiab nws cov npe lag luam suav nrog Parsol 1789, Eusolex 9020, Escalol 517, thiab lwm yam. Ua ib qho khoom siv ntawm dibenzoylmethane, nws tuaj yeem nqus tau UVA ntawm txhua qhov wavelengths, tshwj xeeb tshaj yog muaj qhov nqus siab tshaj plaws rau UVA nrog qhov wavelength ntawm 357 nanometers. Yog li ntawd, nws tau siv dav hauv ntau yam khoom thov kev tiv thaiv hnub ci dav dav, uas tuaj yeem tiv thaiv kev kub hnyiab thiab txo qhov kev pheej hmoo ntawm mob qog noj ntshav ntawm daim tawv nqaij.

Txawm li cas los xij, avobenzone kuj tsis yog yam tsis muaj kev tsis sib haum xeeb. Ib txoj kev tshawb fawb los ntawm US Food and Drug Administration (FDA) tau taw qhia tias cov khoom xyaw tshuaj pleev thaiv hnub xws li avobenzone tuaj yeem nkag mus rau hauv cov ntshav, thiab qhov concentration ntawm cov tshuaj hauv cov ntshav ntau dua li qhov kev nyab xeeb uas FDA tau teev tseg, ua rau pej xeem txhawj xeeb txog kev nyab xeeb ntawm cov khoom tiv thaiv hnub. Lub caij no, FDA kuj tau hais tias xav txog tias cov tshuaj pleev thaiv hnub tau ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv mob qog noj ntshav ntawm daim tawv nqaij thiab lwm yam kev phom sij ntawm ultraviolet radiation, cov neeg siv khoom yuav tsum tsis txhob tso tseg siv cov tshuaj pleev thaiv hnub vim qhov no, tab sis tuaj yeem xaiv cov khoom muaj kev nyab xeeb dua, xws li cov uas muaj cov tshuaj pleev thaiv hnub xws li zinc oxide thiab titanium dioxide.

Tsis tas li ntawd xwb, thaum siv avobenzone, yuav tsum tau ceev faj txog nws qhov ruaj khov. Yuav tsum tsis txhob kov cov hlau ions kom tsis txhob muaj xim ploj, thiab yuav tsum siv raws li qhov ntau npaum li cas kom ntseeg tau tias cov khoom muaj kev nyab xeeb thiab ua haujlwm tau zoo. Rau cov neeg siv khoom, thaum xaiv cov khoom tiv thaiv hnub uas muaj avobenzone, nws raug nquahu kom ua qhov kev sim me me ntawm daim tawv nqaij ua ntej kom pom tias puas muaj kev tsis haum tshuaj.

Feem ntau, qhov tseem ceeb ntawm avobenzone hauv kev tiv thaiv hnub tsis tuaj yeem tsis quav ntsej, tab sis kev tshawb fawb txog kev nyab xeeb thiab kev saib xyuas kuj tseem yuav tsum tau txhawb nqa tas li kom ntseeg tau tias cov neeg siv khoom tuaj yeem siv cov khoom tiv thaiv hnub kom muaj kev nyab xeeb thiab zoo los tiv thaiv kev puas tsuaj ntawm cov duab tshav ntuj ultraviolet rau daim tawv nqaij. Thaum lub sijhawm tsim khoom, cov tuam txhab lag luam yuav tsum tswj hwm qhov zoo, ua raws li cov qauv thiab cov lus qhia tseem ceeb, thiab txhawb kev txhim kho zoo ntawm avobenzone hauv kev lag luam tiv thaiv hnub.