Tub ceev xwm siv chromatography li cas?
Tub ceev xwm siv chromatography li cas?

Video: Tub ceev xwm siv chromatography li cas?

Video: Tub ceev xwm siv chromatography li cas?
Video: nyias hloov nyias tus kheej kom haum lub caij 10/17/20 2024, Kaum ib hlis
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Hauv forensics, tub ceev xwm siv chromatography txhawm rau txheeb xyuas thiab txheeb xyuas cov khoom pom ntawm qhov chaw ua txhaum cai. Txhua qhov sib tov yog tsim los ntawm cov molecules ntawm cov tshuaj sib txawv, hauv ntau qhov sib txawv. Chromatography ua haujlwm los ntawm kev sib cais cov tshuaj tawm ntawm qhov sib tov thiab kawm seb cov molecules coj li cas thaum lub sijhawm sib cais.

Ntawm no, tub ceev xwm siv chromatography li cas los daws cov teeb meem txhaum cai?

Keeb kwm: Chromatography yog ib txoj hauv kev los tshuaj xyuas cov khoom sib tov los ntawm kev sib cais rau hauv cov tshuaj uas lawv tau tsim. Cov kws tshawb fawb forensic muaj peev xwm siv tus cwj mem chromatography daws teeb meem txhaum cai los ntawm kev sib piv cov ntaub ntawv los yog stains pom ntawm a kev ua txhaum scene rau tus cim lossis cwj mem uas yog tus neeg raug liam.

Tom qab, lo lus nug yog, dab tsi yog txheej txheem ntawm chromatography? Chromatography Qhov tseeb yog ib txoj hauv kev ntawm kev sib cais tawm ntawm cov tshuaj sib tov, uas yog nyob rau hauv cov roj los yog kua daim ntawv, los ntawm kev cia lawv nkag mus maj mam dhau los ntawm lwm yam khoom, uas feem ntau yog kua los yog khoom. Raws li lub sij hawm mobile txav, nws cais tawm mus rau hauv nws cov khoom nyob rau theem nyob ruaj khov.

Kuj nug, chromatography siv nyob rau hauv forensics li cas?

Roj Chromatography yog siv nyob rau hauv tshav dav hlau mus ntes foob pob thiab yog siv yog forensics nyob rau hauv ntau yam sib txawv. Nws yog siv txhawm rau txheeb xyuas cov fibers ntawm tib neeg lub cev thiab tseem txheeb xyuas cov ntshav pom ntawm qhov chaw ua txhaum cai. Hauv gas chromatography helium yog siv kom txav cov roj sib tov los ntawm ib kem ntawm cov khoom siv absorbent.

Dab tsi sib tov tuaj yeem sib cais los ntawm chromatography?

Sib cais yaj yaj - chromatography Nws yog feem ntau siv thaum cov tshuaj yaj yeeb muaj xim, xws li inks, zaub mov xim thiab cov xim cog. Nws ua haujlwm vim tias qee cov xim muaj xim yaj hauv cov kuab tshuaj siv tau zoo dua li lwm tus, yog li lawv mus ntxiv rau hauv daim ntawv.

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