Ethylene oxide (EO) yakhala ikugwiritsidwa ntchito pophera tizilombo toyambitsa matenda ndi kutsekereza kwa nthawi yayitali ndipo ndi mankhwala okhawo omwe amaletsa mpweya wodziwika padziko lonse lapansi ngati wodalirika kwambiri. M'mbuyomu,ethylene oxideankagwiritsidwa ntchito makamaka pophera tizilombo toyambitsa matenda m'mafakitale ndi kutsekereza. Ndi chitukuko cha umisiri wamakono wamafakitale ndi makina odzipangira okha komanso ukadaulo wanzeru, ukadaulo wa ethylene oxide sterilization ukhoza kugwiritsidwa ntchito mosamala m'mabungwe azachipatala pochotsa zida zachipatala zolondola zomwe zimawopa kutentha ndi chinyezi.

Makhalidwe a ethylene oxide

Ethylene oxidendi m'badwo wachiwiri wa mankhwala ophera tizilombo pambuyo pa formaldehyde. Akadali amodzi mwa mankhwala ozizira kwambiri ophera tizilombo tozizira komanso membala wofunikira kwambiri pamakina anayi akuluakulu ochepetsa kutentha.

Ethylene oxide ndi yosavuta epoxy pawiri. Ndi gasi wopanda mtundu pa kutentha ndi kupanikizika. Ndilolemera kuposa mpweya ndipo lili ndi fungo lonunkhira la ether. Ethylene oxide ndi yoyaka komanso yophulika. Pamene mpweya uli ndi 3% mpaka 80%ethylene oxide, mpweya wosakanizidwa wophulika umapangidwa, womwe umayaka kapena kuphulika ukakhala pamoto wotseguka. Ambiri ntchito ethylene okusayidi ndende kwa disinfection ndi yotseketsa ndi 400 kuti 800 mg/L, amene ndi yoyaka ndi kuphulika ndende ndende mu mlengalenga, choncho ayenera kugwiritsidwa ntchito mosamala.

Ethylene oxide imatha kusakanikirana ndi mpweya wa inert mongampweya woipamu chiŵerengero cha 1:9 kuti apange chisakanizo chosaphulika, chomwe chili chotetezeka kupha tizilombo toyambitsa matenda ndi kulera.Ethylene oxideakhoza polymerize, koma zambiri polymerization ndi pang'onopang'ono ndipo makamaka limapezeka boma madzi. Mu zosakaniza za ethylene oxide ndi carbon dioxide kapena fluorinated hydrocarbons, polymerization imachitika pang'onopang'ono ndipo ma polima olimba sangaphulike.

Mfundo ya Ethylene Oxide Sterilization

1. Alkylation

Mchitidwe wa zochita zaethylene oxidepakupha tizilombo tosiyanasiyana ndi makamaka alkylation. Malo ochitirapo ndi sulfhydryl (-SH), amino (-NH2), hydroxyl (-COOH) ndi hydroxyl (-OH) mu mapuloteni ndi nucleic acid mamolekyu. Ethylene oxide imatha kupangitsa kuti maguluwa akumane ndi alkylation reaction, kupanga ma biological macromolecules a tizilombo tating'onoting'ono, potero kupha tizilombo tating'onoting'ono.

2. Kuletsa ntchito ya michere yachilengedwe

Ethylene okusayidi akhoza ziletsa ntchito zosiyanasiyana michere ya tizilombo tating'onoting'ono, monga mankwala dehydrogenase, cholinesterase ndi oxidase ena, kulepheretsa akamaliza yachibadwa kagayidwe kachakudya njira za tizilombo ndi kuchititsa imfa yawo.

3. Kupha zotsatira za tizilombo

Onseethylene oxidemadzi ndi mpweya amakhala amphamvu microbicidal zotsatira. Poyerekeza, mphamvu ya microbicidal ya gasi imakhala yamphamvu, ndipo mpweya wake umagwiritsidwa ntchito popha tizilombo toyambitsa matenda komanso kutsekereza.

Ethylene oxide ndi njira yabwino kwambiri yophera tizilombo toyambitsa matenda yomwe imakhala ndi mphamvu yopha komanso yolepheretsa matupi ofalitsa mabakiteriya, spores, bowa, ndi ma virus. Ethylene oxide ikakumana ndi tizilombo tating'onoting'ono, koma tizilombo tating'onoting'ono timakhala ndi madzi okwanira, zomwe zimachitika pakati pa ethylene oxide ndi tizilombo tating'onoting'ono ndizomwe zimachitika koyamba. Mlingo womwe umalepheretsa tizilombo tating'onoting'ono tating'onoting'ono, njira yokhotakhota imakhala yowongoka pamtengo wa semi-logarithmic.

Ntchito zosiyanasiyana ethylene okusayidi yotseketsa

Ethylene oxidesichiwononga zinthu zosawilitsidwa ndipo imakhala ndi malowedwe amphamvu. Zinthu zambiri zomwe sizoyenera kutseketsa mwa njira wamba zitha kupha tizilombo toyambitsa matenda ndikuyezedwa ndi ethylene oxide. Itha kugwiritsidwa ntchito pochotsa zinthu zachitsulo, ma endoscopes, dialyzers ndi zida zachipatala zotayidwa, kupha tizilombo toyambitsa matenda komanso kupha tizilombo tating'onoting'ono tating'onoting'ono tating'onoting'ono, zinthu zapulasitiki, komanso kupha tizilombo toyambitsa matenda m'madera omwe ali ndi matenda opatsirana (monga nsalu zopangidwa ndi CHIKWANGWANI, zikopa, mapepala, zikalata, ndi utoto wamafuta).

Ethylene oxide sichiwononga zinthu zosabala ndipo imakhala ndi kulowa mwamphamvu. Zinthu zambiri zomwe sizoyenera kutseketsa mwa njira wamba zitha kupha tizilombo toyambitsa matenda ndikuyezedwa ndi ethylene oxide. Itha kugwiritsidwa ntchito pochotsa zinthu zachitsulo, ma endoscopes, dialyzers ndi zida zachipatala zotayidwa, kupha tizilombo toyambitsa matenda komanso kupha tizilombo tating'onoting'ono tating'onoting'ono tating'onoting'ono, zinthu zapulasitiki, komanso kupha tizilombo toyambitsa matenda m'madera omwe ali ndi matenda opatsirana (monga nsalu zopangidwa ndi CHIKWANGWANI, zikopa, mapepala, zikalata, ndi utoto wamafuta).

Zinthu zomwe zimakhudza njira yolera yotseketsaethylene oxide

Kuchepetsa mphamvu ya ethylene oxide kumakhudzidwa ndi zinthu zambiri. Pofuna kukwaniritsa njira yabwino kwambiri yoletsa kulera, pokha pokha poyang'anira zinthu zosiyanasiyana kungathandize kwambiri kupha tizilombo toyambitsa matenda ndi kukwaniritsa cholinga chake chopha tizilombo toyambitsa matenda ndi kulera. Zinthu zazikulu zomwe zimakhudza mphamvu yotseketsa ndi: kukhazikika, kutentha, chinyezi, nthawi yochita, ndi zina.