Dioxane ni iki?Byaturutse he?
Dioxane, inzira nziza yo kubyandika ni dioxane.Kuberako ikibi kiragoye kwandika, muriki kiganiro tuzakoresha amagambo asanzwe aho.Nibintu kama kama, bizwi kandi nka dioxane, 1, 4-dioxane, amazi atagira ibara.Dioxane uburozi bukabije ni uburozi buke, bufite anesthetic kandi itera imbaraga.Ukurikije amategeko agenga umutekano w’amavuta yo kwisiga mu Bushinwa, dioxane ni ikintu kibujijwe kwisiga.Ko bibujijwe kongeramo, kuki kwisiga bigifite dioxane?Kubwimpamvu zidashobora kwirindwa tekiniki, birashoboka ko dioxane yinjizwa mumavuta yo kwisiga nkumwanda.None ni uwuhe mwanda uri mu bikoresho fatizo?
Kimwe mu bintu bikoreshwa cyane mu kweza muri shampo no koza umubiri ni sodium fatty alcool ether sulfate, izwi kandi nka sodium AES cyangwa SLES.Iki kintu gishobora gukorwa mumavuta yintoki cyangwa peteroli nkibikoresho fatizo muri alcool zibyibushye, ariko bigahuzwa binyuze murwego rwintambwe nka ethoxylation, sulfonation, no kutabogama.Intambwe yingenzi ni ethoxylation, muriyi ntambwe yuburyo bwo kubyitwaramo, ugomba gukoresha ibikoresho fatizo bya okiside ya Ethylene, ikaba ari ibikoresho fatizo monomer ikoreshwa cyane munganda ya synthesis ya chimique, mugihe cya reaction ya ethoxylation, hiyongereyeho hiyongereyeho okiside ya Ethylene kuri alcool ibinure kugirango itange inzoga ya ethoxylated, Hariho kandi agace gato ka okiside ya Ethylene (EO) molekile ebyiri zibiri kugirango zibyare umusaruro, ni ukuvuga umwanzi wa dioxane, reaction yihariye irashobora kwerekanwa ku ishusho ikurikira:
Muri rusange, abakora ibikoresho fatizo bazagira intambwe nyuma yo gutandukanya no kweza dioxyde, abakora ibikoresho bitandukanye bibisi bazagira ibipimo bitandukanye, abakora amavuta yo kwisiga mpuzamahanga nabo bazagenzura iki cyerekezo, muri rusange nka 20 kugeza 40ppm.Kubijyanye nibirimo mubicuruzwa byarangiye (nka shampoo, koza umubiri), nta bipimo mpuzamahanga byihariye.Nyuma y’ibyabaye kuri shampoo ya Bawang mu 2011, Ubushinwa bwashyizeho ibipimo byibicuruzwa byarangiye bitarenze 30ppm.
Dioxane itera kanseri, itera impungenge z'umutekano?
Nkibikoresho fatizo byakoreshejwe kuva mu Ntambara ya Kabiri y'Isi Yose, sodium sulfate (SLES) na dioxyde y’ibicuruzwa byakozweho ubushakashatsi bwimbitse.Ikigo cy’Amerika gishinzwe ibiryo n’ibiyobyabwenge (FDA) kimaze imyaka 30 cyiga dioxyde mu bicuruzwa by’abaguzi, kandi Ubuzima bwa Kanada bwanzuye ko kuba hari dioxyde de dioxyde de vitamine mu bicuruzwa byo kwisiga bidatera ingaruka mbi ku buzima ku baguzi, ndetse no ku bana (Kanada) ).Nk’uko byatangajwe na komisiyo ishinzwe ubuzima n’umutekano muri Ositaraliya, ngo urugero rwiza rwa dioxyde mu bicuruzwa ni 30ppm, naho urugero rwo hejuru rw’uburozi ni 100ppm.Mubushinwa, nyuma yumwaka wa 2012, igipimo ntarengwa cya 30ppm kubintu bya dioxyde de cosmetike ntikiri munsi yuburozi bwemewe bwa 100ppm mugihe cyo gukoresha bisanzwe.
Ku rundi ruhande, hakwiye gushimangirwa ko Ubushinwa bugarukira kuri dioxyde mu bipimo byo kwisiga bitarenze 30ppm, akaba ari rwo rwego rwo hejuru ku isi.Kuberako mubyukuri, ibihugu byinshi nakarere bifite imipaka irenze kubiri dioxyde kurenza ibipimo byacu cyangwa ntamahame asobanutse:
Mubyukuri, ingano ya dioxyde nayo irasanzwe muri kamere.Ibiro by’uburozi muri Amerika byandika urutonde rwa dioxyde iboneka mu nkoko, inyanya, urusenda ndetse no mu mazi yo kunywa.Amabwiriza y’umuryango w’ubuzima ku isi agenga ubuziranenge bw’amazi yo kunywa (integuro ya gatatu) avuga ko urugero rwa dioxyde mu mazi ari 50 μg / L.
Kugirango rero tuvuge muri make ikibazo cya kanseri ya dioxyde mu nteruro imwe, ni ukuvuga: utitaye ku kigero cyo kuvuga ku kibi ni ikigoryi.
Hasi yibiri muri dioxyde, nibyiza nibyiza, sibyo?
Dioxane ntabwo aricyo cyonyine cyerekana ubuziranenge bwa SLES.Ibindi bipimo nkubunini bwimvange idasembuye nubunini bwibitera ibicuruzwa nabyo ni ngombwa kubitekerezaho.
Mubyongeyeho, ni ngombwa kumenya ko SLES nayo iza mubunini butandukanye, itandukaniro rinini ni urwego rwa ethoxylation, bamwe bafite 1 EO, bamwe bafite 2, 3 cyangwa ndetse na 4 EO (birumvikana ko ibicuruzwa bifite ahantu icumi nka 1.3 na 2.6 birashobora kandi kubyara umusaruro).Urwego rwo hejuru rwiyongera kuri ethoxidation, ni ukuvuga, umubare wa EO ninshi, niko ibirimo dioxyde ikorwa muburyo bumwe no muburyo bwo kwezwa.
Igishimishije ariko, impamvu yo kongera EO ni ukugabanya uburakari bwa SLES surfactant SLES, kandi umubare munini wa EO SLES, ntukarakaze kuruhu, ni ukuvuga byoroheje, nibindi.Hatariho EO, ni SLS, idakunzwe nabayigize, nikintu gikangura cyane.
Kubwibyo, ibirimo dioxyde nkeya ntabwo bivuze ko byanze bikunze ari ibikoresho byiza.Kuberako niba umubare wa EO ari muto, kurakara kubintu bibisi bizaba byinshi
INCAMAKE:
Dioxane ntabwo ari ikintu cyongeweho n’inganda, ahubwo ni ibikoresho fatizo bigomba kuguma mu bikoresho fatizo nka SLES, bigoye kubyirinda.Ntabwo ari muri SLES gusa, mubyukuri, mugihe cyose ethoxylation ikozwe, hazaba hari urugero rwa dioxyde de dioxyde, kandi ibikoresho bimwe na bimwe byita ku ruhu nabyo birimo dioxyde.Dufatiye ku gusuzuma ibyago, nkibintu bisigaye, nta mpamvu yo gukurikirana ibintu 0 byuzuye, gufata tekinoroji yo gutahura, "ntibimenyekane" ntabwo bivuze ko ibirimo ari 0.
Rero, kuvuga ibibi birenze urugero ni ukuba agatsiko.Umutekano wa dioxyde umaze imyaka myinshi wizwe, kandi hashyizweho ingamba zijyanye n’umutekano n’ibisabwa, kandi ibisigazwa bitarenze 100ppm bifatwa nk’umutekano.Ariko ibihugu nk’Umuryango w’ubumwe bw’ibihugu by’Uburayi ntibyigeze bigira itegeko riteganijwe.Ibisabwa murugo kubirimo dioxyde mubicuruzwa biri munsi ya 30ppm.
Dioxane rero muri shampoo ntabwo ikeneye guhangayikishwa na kanseri.Kubijyanye namakuru atari yo mubitangazamakuru, ubu urumva ko ari ukugira ngo witondere gusa.
Igihe cyo kohereza: Nzeri-27-2023
