Dioxane yog dab tsi?Nws tuaj qhov twg?
Dioxane, txoj hauv kev kom raug sau nws yog dioxane.Vim hais tias kev phem yog qhov nyuaj heev rau kev ntaus ntawv, hauv tsab xov xwm no peb yuav siv cov lus phem ib txwm siv.Nws yog ib qho organic compound, tseem hu ua dioxane, 1, 4-dioxane, kua tsis muaj xim.Dioxane mob toxicity yog tsawg toxicity, muaj tshuaj loog thiab stimulating los.Raws li tam sim no Kev Nyab Xeeb Kev Cai Lij Choj ntawm Tshuaj pleev ib ce hauv Suav teb, dioxane yog txwv tsis pub siv tshuaj pleev ib ce.Txij li nws txwv tsis pub ntxiv, vim li cas cov tshuaj pleev ib ce tseem muaj cov tshuaj dioxane?Rau cov laj thawj uas tsis tuaj yeem zam tsis tau, nws tuaj yeem ua rau dioxane tuaj yeem nkag mus rau hauv cov tshuaj pleev ib ce ua ib qho impurity.Yog li dab tsi yog cov impurities hauv cov khoom siv raw?
Ib qho ntawm cov khoom siv tshuaj ntxuav tes ntau tshaj plaws hauv cov tshuaj zawv plaub hau thiab ntxuav lub cev yog sodium fatty cawv ether sulfate, tseem hu ua sodium AES lossis SLES.Cov khoom no tuaj yeem tsim los ntawm cov roj xibtes ntuj lossis roj av ua cov ntaub ntawv raw rau hauv cov roj cawv, tab sis nws yog tsim los ntawm cov kauj ruam xws li ethoxylation, sulfonation, thiab neutralization.Cov kauj ruam tseem ceeb yog ethoxylation, hauv cov kauj ruam ntawm cov txheej txheem tshuaj tiv thaiv no, koj yuav tsum siv cov khoom siv raw ntawm ethylene oxide, uas yog cov khoom siv raw monomer dav siv hauv kev lag luam chemical synthesis, hauv cov txheej txheem ntawm ethoxylation cov tshuaj tiv thaiv, ntxiv rau cov khoom siv raw khoom. Ntxiv ntawm ethylene oxide rau fatty cawv los tsim ethoxylated fatty cawv, kuj tseem muaj ib feem me me ntawm ethylene oxide (EO) ob ob molecules condensation los ua ib qho khoom los ntawm cov khoom, uas yog, yeeb ncuab ntawm dioxane, cov tshuaj tiv thaiv tshwj xeeb tuaj yeem pom. hauv daim duab hauv qab no:
Feem ntau, cov tuam txhab lag luam raw khoom yuav muaj cov kauj ruam tom ntej los cais thiab ntxuav cov dioxane, cov khoom siv raw khoom sib txawv yuav muaj cov qauv sib txawv, ntau lub teb chaws cov tshuaj pleev ib ce tseem yuav tswj qhov ntsuas no, feem ntau txog 20 txog 40ppm.Raws li cov txheej txheem cov ntsiab lus hauv cov khoom tiav (xws li tshuaj zawv plaub hau, ntxuav lub cev), tsis muaj cov ntsuas thoob ntiaj teb tshwj xeeb.Tom qab qhov xwm txheej ntawm Bawang zawv plaub hau hauv xyoo 2011, Tuam Tshoj tau teeb tsa tus qauv rau cov khoom tiav ntawm tsawg dua 30ppm.
Dioxane ua rau mob qog noj ntshav, nws puas ua rau muaj kev txhawj xeeb txog kev nyab xeeb?
Raws li cov khoom siv raw siv txij li Tsov Rog Ntiaj Teb Zaum II, sodium sulfate (SLES) thiab nws cov khoom los ntawm dioxane tau kawm ntau heev.Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv thiab Tshuaj (FDA) tau kawm txog dioxane hauv cov khoom siv rau 30 xyoo, thiab Kev Noj Qab Haus Huv Canada tau xaus lus tias qhov muaj cov tshuaj dioxane hauv cov khoom siv tshuaj pleev ib ce tsis ua rau muaj kev phom sij rau cov neeg siv khoom, txawm tias menyuam yaus (Canada. ).Raws li Australian National Occupational Health and Safety Commission, qhov kev txwv zoo tshaj ntawm dioxane hauv cov khoom siv yog 30ppm, thiab qhov txwv siab tshaj ntawm cov tshuaj toxicological tau txais yog 100ppm.Hauv Suav teb, tom qab xyoo 2012, qhov txwv tus qauv ntawm 30ppm rau dioxane cov ntsiab lus hauv cov tshuaj pleev ib ce yog tsawg dua li cov tshuaj toxicologically lees txais sab saud ntawm 100ppm raws li kev siv ib txwm siv.
Ntawm qhov tod tes, nws yuav tsum tau hais tias Tuam Tshoj txoj kev txwv ntawm dioxane hauv cov qauv tshuaj pleev ib ce yog tsawg dua 30ppm, uas yog tus qauv siab hauv ntiaj teb.Vim hais tias qhov tseeb, ntau lub teb chaws thiab cheeb tsam muaj kev txwv ntau dua ntawm cov ntsiab lus dioxane dua li peb cov qauv lossis tsis muaj cov qauv qhia meej:
Qhov tseeb, cov lej ntawm dioxane kuj muaj nyob hauv qhov xwm txheej.Tebchaws Asmeskas Cov Tshuaj Tiv Thaiv Kab Mob thiab Cov Kab Mob tau sau npe dioxane raws li pom muaj nyob rau hauv nqaij qaib, txiv lws suav, cw thiab txawm nyob hauv peb cov dej haus.Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Ntiaj Teb Cov Lus Qhia rau Kev Haus Dej Zoo (Qhov thib peb tsab) hais tias qhov txwv ntawm dioxane hauv dej yog 50 μg / L.
Yog li txhawm rau txheeb xyuas qhov teeb meem carcinogenic ntawm dioxane hauv ib kab lus, uas yog: tsis hais qhov koob tshuaj los tham txog kev puas tsuaj yog ib tug neeg ruam.
Cov ntsiab lus ntawm dioxane qis dua, qhov zoo dua, txoj cai?
Dioxane tsis yog ib qho kev qhia ntawm SLES zoo.Lwm yam kev ntsuas xws li tus nqi ntawm unsulfonated compounds thiab tus nqi ntawm irritants nyob rau hauv cov khoom kuj tseem ceeb rau kev txiav txim siab.
Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias SLES kuj tuaj ntawm ntau qhov sib txawv, qhov sib txawv loj tshaj plaws yog qib ntawm ethoxylation, qee qhov muaj 1 EO, qee qhov muaj 2, 3 lossis 4 EO (tau kawg, cov khoom lag luam nrog cov lej lej xws li 1.3. thiab 2.6 kuj tuaj yeem tsim tau).Qhov siab dua ntawm kev nce ethoxidation, uas yog, ntau dua EO, ntau dua cov ntsiab lus ntawm dioxane tsim nyob rau hauv tib txoj kev thiab purification tej yam kev mob.
Interestingly, txawm li cas los xij, vim li cas thiaj li nce EO yog kom txo tau qhov irritant ntawm surfactant SLES, thiab cov EO SLES ntau dua, cov tawv nqaij tsawg dua, uas yog, me me, thiab vice versa.Yog tsis muaj EO, nws yog SLS, uas tsis nyiam los ntawm cov neeg koom nrog, uas yog cov khoom muaj zog heev.
Yog li ntawd, cov ntsiab lus qis ntawm dioxane tsis txhais hais tias nws yog ib qho khoom siv zoo.Vim hais tias yog tus naj npawb ntawm EO me me, qhov khaus ntawm cov khoom siv raw yuav ntau dua
Hauv SUMMARY:
Dioxane tsis yog cov khoom xyaw ntxiv los ntawm cov tuam txhab, tab sis cov khoom siv raw uas yuav tsum tau nyob hauv cov khoom siv raw xws li SLES, uas nyuaj rau zam.Tsis yog hauv SLES nkaus xwb, qhov tseeb, ntev npaum li ethoxylation tau ua tiav, yuav muaj cov kab mob dioxane, thiab qee cov khoom siv tu tawv nqaij kuj muaj dioxane.Los ntawm qhov pom ntawm qhov kev ntsuam xyuas kev pheej hmoo, raws li cov khoom seem, tsis tas yuav mus nrhiav cov ntsiab lus 0, coj cov cuab yeej tshawb nrhiav tam sim no, "tsis pom" tsis txhais tau tias cov ntsiab lus yog 0.
Yog li, tham txog kev puas tsuaj dhau ntawm koob tshuaj yog ua neeg loj leeb.Kev nyab xeeb ntawm dioxane tau kawm ntau xyoo, thiab cov qauv kev nyab xeeb thiab cov qauv pom zoo tau tsim, thiab cov khoom seem tsawg dua 100ppm raug suav hais tias muaj kev nyab xeeb.Tab sis cov teb chaws xws li European Union tsis tau ua nws tus qauv yuav tsum tau ua.Cov kev cai hauv tsev rau cov ntsiab lus ntawm dioxane hauv cov khoom yog tsawg dua 30ppm.
Yog li ntawd, dioxane hauv tshuaj zawv plaub hau tsis tas yuav txhawj xeeb txog kev mob qog noj ntshav.Raws li cov ntaub ntawv tsis raug hauv xov xwm, tam sim no koj nkag siab tias tsuas yog kom tau txais kev mloog xwb.
Post lub sij hawm: Sep-27-2023
