Hauv cov xwm txheej siv txhua hnub, tej zaum tib neeg tsis paub txog lo lus "fluorescent brighteners". Txij li cov khaub ncaws dawb zoo li daus mus rau cov ntawv ci thiab huv si, cov fluorescent brighteners tau ua haujlwm ntsiag to. Tsis ntev los no, cov khoom siv tshuaj no tau rov qab los ua qhov chaw tseem ceeb ntawm kev lag luam.
Thaum koj nkag mus rau hauv lub chaw ua haujlwm luam ntawv thiab zas xim ntaub, cov ntaub uas muaj xim nyoos tam sim ntawd yuav ci ntsa iab dawb tom qab ua tiav cov txheej txheem tshwj xeeb. Qhov zais cia yog cov tshuaj ua kom ci ntsa iab fluorescent uas tau ntxiv rau hauv. Ua ib qho khoom siv ntxiv, nws tuaj yeem nqus tau lub teeb ultraviolet uas tsis pom thiab hloov nws mus ua lub teeb xiav uas pom, uas tom qab ntawd sib xyaw nrog lub teeb daj qub ntawm cov ntaub, tsim kom muaj kev dawb thiab ci ntsa iab. Nyob rau xyoo tas los no, thaum kev lag luam ntaub txav mus rau kev tsim khoom zoo thiab zoo, kev tswj xyuas qhov zoo ntawm cov tshuaj ua kom ci ntsa iab fluorescent tau dhau los ua qhov nruj dua. Cov tshuaj ua kom ci ntsa iab fluorescent uas zoo rau ib puag ncig tau pib tshwm sim. Cov hom uas yuav muaj kev pheej hmoo rau ib puag ncig yav dhau los maj mam raug tshem tawm, hloov los ntawm cov khoom tshiab uas lwj tau thiab ua rau muaj kuab paug dej tsawg.
Kev ua ntawv kuj yog ib qho "chaw sib ntaus sib tua" loj rau cov tshuaj fluorescent brighteners. Txhawm rau kom tau raws li qhov xav tau ntawm pej xeem rau qhov dawb thiab cov qauv ntawm cov ntawv, cov chaw tsim ntawv loj yeej ib txwm ua kom zoo dua cov qauv siv ntawm cov tshuaj fluorescent brighteners. Cov kws tshaj lij tau qhia tias kev siv cov tshuaj fluorescent brighteners kom raug tsis yog tsuas yog txhim kho qhov zoo nkauj ntawm daim ntawv xwb tab sis kuj txhim kho qhov yooj yim ntawm daim ntawv mus rau qee qhov, ua rau cov kua nplaum sib npaug dua thiab cov xim ci dua.
Txawm li cas los xij, kev tsim cov tshuaj fluorescent brighteners tsis tau yooj yim kiag li. Hauv cov khoom siv tshuaj niaj hnub, tshwj xeeb tshaj yog cov uas nyob ze rau daim tawv nqaij, xws li cov tshuaj ntxuav ntsej muag thiab cov tshuaj pleev, lawv txoj kev nyab xeeb tau muaj kev tsis sib haum xeeb ntev lawm. Vim li no, cov tub ceev xwm tau nce qib kev siv zog, ua kom muaj zog ntawm kev tshuaj xyuas random, thiab tswj hwm nruj me ntsis ntawm kev sau npe ntawm cov khoom siv tshuaj niaj hnub uas muaj cov tshuaj fluorescent brighteners. Cov pab pawg tshawb fawb kuj tab tom tshawb nrhiav cov ntaub ntawv tob tob, siv cov kev tshawb fawb txog kev lom thiab kev sim ua rau khaus tawv nqaij los ua pov thawj cov tshuaj fluorescent brighteners uas ua raws li txoj cai, ua kom meej meej txog cov ciam teb ntawm cov koob tshuaj nyab xeeb thiab cov qib phom sij, kom cov neeg siv khoom xis nyob.
Saib thoob ntiaj teb, Tuam Tshoj twb tau dhau los ua lub teb chaws tsim khoom loj thiab xa tawm cov tshuaj fluorescent brighteners. Cov tuam txhab lag luam hauv tsev loj tau nce lawv cov peev txheej hauv kev tshawb fawb thiab kev txhim kho, txij li kev xaiv cov khoom siv tshuaj lom neeg tseem ceeb mus rau kev txhim kho cov txheej txheem tsim tshiab, tas li rhuav tshem cov cuab yeej siv thev naus laus zis txawv teb chaws, txo cov nqi tsim khoom, thiab txhim kho kev sib tw ntawm cov khoom. Raws li cov ntaub ntawv kev lis kev cai, nyob rau peb lub hlis dhau los, Tuam Tshoj cov khoom xa tawm ntawm cov tshuaj fluorescent brighteners tau nce ntau dua 15% txhua xyoo, thiab cov khoom tau muag rau ntau thaj chaw xws li Tebchaws Europe, Tebchaws Meskas, thiab Sab Qab Teb Hnub Tuaj Asia. Thaum tau txais kev ruaj khov hauv kev lag luam thoob ntiaj teb, nws kuj tau tsav tsheb kev txhim kho kev sib koom tes ntawm cov saw hlau kev lag luam sab saud thiab sab qis, txhaj tshuaj tshiab rau hauv kev lag luam tshuaj lom neeg.
Nws tuaj yeem kwv yees tau tias nrog kev rov ua dua ntawm thev naus laus zis thiab kev hloov kho tshiab ntawm kev siv, cov tshuaj fluorescent brighteners yuav qhib ntau txoj hauv kev siv raws li lub hauv paus ntawm kev ua raws li cov qauv zoo thiab kev nyab xeeb, txuas ntxiv ci ntsa iab txhua yam ntawm peb lub neej thiab sau ib tshooj tshiab rau kev lag luam.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2024
