Chelate, chelate tsim los ntawm cov neeg ua haujlwm chelate, los ntawm Greek lo lus Chele, txhais tau tias crab claw.Chelates zoo li roob ris tuav hlau ions, uas muaj kev ruaj khov thiab yooj yim tshem tawm lossis siv cov hlau ions.Xyoo 1930, thawj chelate tau tsim nyob rau hauv lub teb chaws Yelemees - EDTA (ethylenediamine tetraacetic acid) chelate rau kev kho mob hnyav hlau lom neeg mob, thiab tom qab ntawd cov chelate tau tsim thiab siv rau kev ntxuav txhua hnub, zaub mov, kev lag luam thiab lwm yam kev siv.
Tam sim no, cov tuam txhab tseem ceeb ntawm cov neeg ua haujlwm chelating hauv ntiaj teb suav nrog BASF, Norion, Dow, Dongxiao Biological, Shijiazhuang Jack thiab lwm yam.
Lub cheeb tsam Asia-Pacific yog lub lag luam loj tshaj plaws rau cov neeg ua haujlwm chelates, nrog ntau dua 50% sib koom thiab kwv yees kev lag luam loj ntawm ntau dua US $ 1 nphom, nrog cov ntawv thov tseem ceeb hauv cov tshuaj ntxuav tes, dej kho mob, kev saib xyuas tus kheej, ntawv, zaub mov thiab dej haus kev lag luam. .
(Molecular qauv ntawm tus neeg sawv cev chelate EDTA)
Chelating cov neeg ua haujlwm tswj cov hlau ions los ntawm chelates lawv cov ntau-ligands nrog hlau ion complexes los tsim chelates.
Los ntawm cov txheej txheem no, nws tuaj yeem nkag siab tias ntau cov molecules nrog ntau-ligands muaj peev xwm chelation.
Ib qho ntawm feem ntau yog EDTA saum toj no, uas tuaj yeem muab 2 nitrogen atoms thiab 4 carboxyl oxygen atoms los koom tes nrog cov hlau, thiab tuaj yeem siv 1 molecule kom nruj qhwv cov calcium ion uas xav tau 6 kev sib koom tes, tsim cov khoom ruaj khov nrog cov khoom zoo heev. chelation muaj peev xwm.Lwm cov chelators feem ntau siv xws li sodium phytate xws li sodium gluconate, sodium glutamate diacetate tetrasodium (GLDA), sodium amino acids xws li methylglycine diacetate trisodium (MGDA), thiab polyphosphates thiab polyamines.
Raws li peb txhua tus paub, txawm nyob rau hauv dej kais dej los yog hauv lub cev dej ntuj, muaj calcium, magnesium, hlau plasma, cov hlau ions nyob rau hauv lub sij hawm ntev enrichment, yuav coj cov nram qab no los rau peb lub neej txhua hnub:
1. Cov ntaub yog tsis zoo ntxuav, ua rau scale deposition, hardening thiab darkening.
2. Tsis muaj tus neeg saib xyuas tsim nyog rau ntawm qhov tawv tawv, thiab cov nplais tso nyiaj
3. Scale deposits nyob rau hauv tableware thiab glassware
Dej hardness hais txog cov ntsiab lus ntawm calcium thiab magnesium ions hauv dej, thiab cov dej tawv yuav txo cov nyhuv ntxuav.Hauv cov khoom siv tshuaj ntxuav tes, tus neeg sawv cev chelating tuaj yeem ua rau cov tshuaj calcium, magnesium thiab lwm yam hlau ions hauv dej, thiaj li ua kom cov dej zoo, tiv thaiv calcium thiab magnesium plasma los ntawm kev cuam tshuam nrog tus neeg sawv cev hauv cov tshuaj ntxuav tes, thiab tsis txhob cuam tshuam cov nyhuv ntxuav. , yog li txhim kho kev ua haujlwm ntawm cov khoom siv ntxhua.
Tsis tas li ntawd, cov neeg ua haujlwm chelating tuaj yeem ua rau cov khoom sib xyaw ntawm cov tshuaj ntxuav tes kom ruaj khov thiab tsis tshua muaj kev cuam tshuam rau kev puas tsuaj thaum rhuab los yog khaws cia rau lub sijhawm ntev.
Qhov sib ntxiv ntawm chelating tus neeg saib xyuas rau cov ntxhua khaub ncaws tuaj yeem txhim kho nws lub zog tu, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas cov tshuaj ntxuav tau zoo heev cuam tshuam los ntawm hardness, xws li sab qaum teb, sab qab teb sab hnub poob thiab lwm qhov chaw uas muaj dej hardness, chelating tus neeg saib xyuas kuj tuaj yeem tiv thaiv cov dej stains thiab stains. los ntawm kev nyob rau saum npoo ntawm cov ntaub, kom cov ntxhua khaub ncaws ntxhua khaub ncaws yog permeable thiab yooj yim dua adhered rau saum npoo ntawm cov khaub ncaws, kev txhim kho cov nyhuv ntxuav tib lub sijhawm.Txhim kho whiteness thiab softness, intuitive kev ua tau zoo tsis yog li grey thiab qhuav tawv.
Tsis tas li ntawd nyob rau hauv kev tu tawv nqaij thiab ntxuav tais diav, tus neeg sawv cev chelating hauv cov tshuaj ntxuav tes tuaj yeem txhim kho qhov kev sib cais thiab kev sib cais ntawm cov tshuaj ntxuav tes, kom cov stain thiab nplai tau yooj yim tshem tawm, thiab qhov kev ua tau zoo yog qhov ntsuas tsis tuaj yeem nyob twj ywm, nto yog pob tshab, thiab lub khob tsis dai dej zaj duab xis.Chelating cov neeg ua haujlwm kuj tuaj yeem ua ke nrog cov pa oxygen hauv huab cua los tsim cov chaw ruaj khov uas cuam tshuam cov oxidation ntawm cov hlau.
Tsis tas li ntawd, cov nyhuv chelating ntawm chelate cov neeg ua haujlwm ntawm cov hlau ions kuj tseem siv rau hauv cov yeeb nkab ntxuav kom tshem tawm xeb.
Post lub sij hawm: Jul-03-2024
