Seleniyumu
Ibisobanuro birambuye
Ibisobanuro byatanzwe
Ifu yumukara
Ibirimo ≥ 99%
(Igipimo cyo gusaba 'gukoresha ibicuruzwa')
Selenium ifite allomorphs enye: seleniyumu yumukara wa hexagonal metallic selenium, ubururu bworoheje, hamwe nubucucike bugereranije bwa 4.81g / cm³ (20 ℃ na 405.2kPa), gushonga kwa 220.5 ℃, aho bitetse 685 ℃, kudashonga mumazi, karubone disulfide na Ethanol , gushonga muri acide sulfurike na chloroform;Seleniyumu itukura ya monoclinic, ubucucike bugereranije ni 4.39g / cm³, gushonga 221 ℃, aho gutekera 685 ℃, kudashonga mumazi, Ethanol, gushonga gake muri ether, gushonga muri acide sulfurique na aside nitric;Ubucucike bugereranije bwa seleniyumu itukura amorphous ni 4.26g / cm³, naho ubucucike bwa seleniyumu yumukara wikirahure ni 4.28g / cm³.Ihindurwamo seleniyumu ya mpandeshatu kuri 180 and, naho ingingo itetse ni 685 ℃.Ntishobora gushonga mumazi kandi irashobora gushonga gato muri karubone disulfide.
EVERBRIGHT® 'll itanga kandi ： ibirimo / umweru / uduce / PHvalue / ibara / ipaki / uburyo bwo gupakira hamwe nibindi bicuruzwa byihariye bikwiranye nuburyo ukoresha, kandi bigatanga ibyitegererezo kubuntu.
Ibicuruzwa
7782-49-2
231-957-4
78.96
Ikintu kitari icyuma
4.81 g / cm³
Kudashonga mumazi
685℃
220.5 ° C.
Imikoreshereze y'ibicuruzwa
Gukoresha inganda
Selenium ifite amafoto yumuriro hamwe nifoto yumvikana.Imikorere y'amashanyarazi irashobora guhindura urumuri mumashanyarazi, kandi imikorere yifoto irashobora kugabanya kwihanganira iyo yongereye urumuri.Imiterere ya fotoelectric na fotosensitif ya seleniyumu irashobora gukoreshwa mugukora fotokeli na metero zerekana kamera na selile.Seleniyumu irashobora guhindura imiyoboro ihindagurika muburyo butaziguye, bityo ikoreshwa cyane mugukora ibyuma bikosora.Selenium yibanze ni P-semiconductor ishobora gukoreshwa mumuzunguruko hamwe nibice bikomeye.Muri fotokopi, seleniyumu irashobora gukoreshwa mugukoporora inyandiko ninzandiko (toner cartridges).Mu nganda z’ibirahure, seleniyumu irashobora gukoreshwa mu gukora ibirahuri bisize amabara, ikirahuri cyamabara ya ruby na emamel.
Icyiciro cya Meidical
Ongera ubudahangarwa
Gutera seleniyumu ikora irashobora gukuraho radicals yubusa mumubiri, ikuraho uburozi mumubiri, antioxydeant, irashobora kubuza neza umusaruro wa lipide peroxide, gukumira amaraso, gukuraho cholesterol, no kongera imikorere yubudahangarwa bwabantu.
Irinde diyabete
Selenium ni kimwe mu bigize glutathione peroxidase, ishobora gukumira iyangirika rya okiside yangiza ingirabuzimafatizo za islet beta, bigatuma ikora bisanzwe, igatera isukari metabolisme, kugabanya isukari mu maraso hamwe n’isukari y’inkari, no kunoza ibimenyetso by’abarwayi ba diyabete.
Irinde cataracte
Retina irashobora kwangirika bitewe no guhura cyane nimirasire ya mudasobwa, seleniyumu irashobora kurinda retina, kongera iherezo ryumubiri wa vitreous, kunoza amaso, no kwirinda cataracte.
