Chii chinonzi dioxane?Zvakabva kupi?
Dioxane, nzira chaiyo yekuinyora ndeye dioxane.Nekuti uipi hwakanyanya kuoma kunyora, muchinyorwa chino tichashandisa akajairika mazwi akaipa pachinzvimbo.Iyo organic compound, inozivikanwawo se dioxane, 1, 4-dioxane, isina ruvara mvura.Dioxane acute toxicity ishoma huturu, ine anesthetic uye inokurudzira mhedzisiro.Zvinoenderana neazvino Safety Technical Code yeCosmetics muChina, dioxane chinhu chinorambidzwa chezvizoro.Sezvo zvichirambidzwa kuwedzera, nei zvizoro zvichine dioxane yekuona?Nezvikonzero zvisingadzivisiki nehunyanzvi, zvinokwanisika kuti dioxane iiswe muzvizoro sechinhu chisina kuchena.Saka ndedzipi tsvina dziri mumidziyo?
Imwe yeanonyanya kushandiswa kuchenesa midziyo mu shampoos uye kugezesa muviri is sodium fatty alcohol ether sulfate, inozivikanwawo se sodium AES kana SLES.Ichi chikamu chinogona kugadzirwa kubva kumafuta emuchindwe wechisikigo kana petroleum seyakagadzirwa kuita madoro ane mafuta, asi inogadzirwa kuburikidza nenhevedzano yematanho senge ethoxylation, sulfonation, uye neutralization.Nhanho yakakosha ndeye ethoxylation, mune ino nhanho yekuita maitiro, unofanirwa kushandisa yakabikwa ethylene oxide, inova mbishi monomer inoshandiswa zvakanyanya mumakemikari synthesis indasitiri, mukuita ethoxylation reaction, mukuwedzera kune kuwedzera kwe ethylene oxide kune ine mafuta doro kugadzira ethoxylated mafuta doro, Kune zvakare chikamu chidiki che ethylene oxide (EO) maviri maviri mamorekuru condensation kuti abudise ne-chigadzirwa, kureva, muvengi we dioxane, iyo chaiyo maitiro inogona kuratidzwa. mumufananidzo unotevera:
Kazhinji, vagadziri vezvinhu zvakasvibirira vanozove nematanho ekupedzisira ekuparadzanisa uye kuchenesa dioxane, vakasiyana vagadziri vezvigadzirwa vachange vaine zviyero zvakasiyana, vagadziri vezvizoro vemarudzi akawanda vanozodzorawo chiratidzo ichi, kazhinji anenge makumi maviri kusvika makumi mana.Kana zviri zvemukati muyero muyakapedzwa chigadzirwa (senge shampoo, kugeza muviri), hapana chaiwo zviratidzo zvepasirese.Mushure mechiitiko che shampoo yeBawang muna 2011, China yakaisa mwero wezvigadzirwa zvakapedzwa zviri pasi pe30ppm.
Dioxane inokonzeresa gomarara, zvinokonzeresa kuchengetedzeka here?
Seyakagadzirwa yakashandiswa kubva Hondo Yenyika II, sodium sulfate (SLES) uye yayo-chigadzirwa dioxane zvakadzidzwa zvakanyanya.The United States Food and Drug Administration (FDA) yanga ichidzidza dioxane mune zvigadzirwa zvevatengi kwemakore makumi matatu, uye Health Canada yakagumisa kuti kuvapo kwehuwandu hwehuwandu hwe dioxane muzvigadzirwa zvekuzora hakuisi njodzi yehutano kune vatengi, kunyangwe vana (Canada. ).Sekureva kweAustralia National Occupational Health and Safety Commission, muganho wakakodzera wedioxane muzvinhu zvevatengi i30ppm, uye muganho wepamusoro wetoxicologically inogamuchirwa i100ppm.KuChina, mushure megore ra2012, muganho we30ppm wezvinyorwa zvedioxane mune zvekuzora wakaderera zvakanyanya pane toxicologically inogamuchirwa yekumusoro muganho we100ppm mumamiriro ekushandiswa akajairwa.
Nekune rimwe divi, zvinofanirwa kusimbiswa kuti muganho weChina we dioxane mune zvizorwa zviyero uri pasi pe30ppm, inova chiyero chepamusoro pasirese.Nekuti kutaura zvazviri, nyika zhinji nematunhu ane miganho yakakwira pane dioxane zvirimo pane yedu mwero kana pasina akajeka mwero:
Muchokwadi, kuteedzera huwandu hwe dioxane zvakare hwakajairika mune zvakasikwa.Iyo US Toxic Substances uye Disease Registry inonyora dioxane seinowanikwa muhuku, madomasi, shrimp uye kunyangwe mumvura yedu yekunwa.The World Health Organisation Guidelines for Drinking Water Quality (yechitatu edition) inotaura kuti muganhu we dioxane mumvura i50 μg/L.
Saka kupfupisa dambudziko recarcinogenic re dioxane mumutsara mumwe, kureva: zvisinei nedosi rekutaura nezve kukuvadza igomarara.
Izvo zvakaderera zviri mukati dioxane, zviri nani mhando, handiti?
Dioxane haisiriyo chete chiratidzo cheSLES mhando.Zvimwe zviratidzo zvakadai sehuwandu hwemakomisheni eunsulfonated uye kuwanda kwezvinogumbura muchigadzirwa zvakakoshawo kufunga.
Mukuwedzera, zvakakosha kuziva kuti SLES inouyawo muhukuru hwakasiyana, mutsauko mukuru uri dhigirii re ethoxylation, vamwe vane 1 EO, vamwe vane 2, 3 kana kunyange 4 EO (zvechokwadi, zvigadzirwa zvine nzvimbo dzegumi dzakadai se1.3 uye 2.6 inogonawo kugadzirwa).Iyo yakakwirira dhigirii yekuwedzera ethoxidation, ndiko kuti, iyo yakakwirira nhamba yeEO, iyo yakakwirira yezvinyorwa zve dioxane inogadzirwa pasi pemaitiro akafanana uye mamiriro ekuchenesa.
Zvinofadza, zvisinei, chikonzero chekuwedzera EO ndechekuderedza kushatisa kweSLES surfactant, uye yakakwirira nhamba yeEO SLES, iyo inoshungurudza zvishoma kune ganda, kureva, kunyoro, uye zvakasiyana.Pasina EO, iyo SLS, iyo isingafarirwe nevamiriri, inova chinhu chinokurudzira zvikuru.
Naizvozvo, iyo yakaderera yemukati ye dioxane haireve kuti inongove yakanaka mbishi zvinhu.Nokuti kana nhamba yeEO iri duku, kutsamwiswa kwezvinhu zvakasvibirira kuchava kukuru
Muchidimbu:
Dioxane haisi chigadziro chakawedzerwa nemabhizinesi, asi chinhu chakasvibirira chinofanira kuramba chiri mune zvigadzirwa zvakaita seSLES, izvo zvakaoma kudzivirira.Kwete muSLES chete, chokwadi, chero bedzi ethoxylation ichiitwa, pachava nekuteedza huwandu hwedioxane, uye mamwe magadzirirwo eganda ane dioxane.Kubva pakuona kwekutarisa njodzi, sechinhu chakasara, hapana chikonzero chekutevera 0 zvemukati, tora yazvino yekuona tekinoroji, "isina kuonekwa" hazvireve kuti zvirimo 0.
Saka, kutaura pamusoro pekukuvadza kupfuura dose ndeyekuva gangster.Kuchengetedzwa kwedioxane kwakadzidzwa kwemakore mazhinji, uye kuchengetedzwa kwakakodzera uye yakakurudzirwa zviyero zvakasimbiswa, uye zvakasara zvisingasviki 100ppm zvinoonekwa zvakachengeteka.Asi nyika dzakaita seEuropean Union hadzina kuzviita chiyero chinosungirwa.Izvo zvinodiwa zvemumba zvemukati dioxane mune zvigadzirwa zviri pasi pe30ppm.
Naizvozvo, iyo dioxane mu shampoo haidi kunetseka nezve cancer.Kana ari iwo emanyepo ari munhau, iwe ikozvino unonzwisisa kuti ndeye kungotariswa.
Nguva yekutumira: Sep-27-2023
