Vim li cas cov kuab tshuaj txav mus rau hauv daim ntawv?
Vim li cas cov kuab tshuaj txav mus rau hauv daim ntawv?

Video: Vim li cas cov kuab tshuaj txav mus rau hauv daim ntawv?

Video: Vim li cas cov kuab tshuaj txav mus rau hauv daim ntawv?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Raws li cov dej nkag up daim ntawv , cov xim yuav cais tawm mus rau hauv lawv cov khoom. Capillary action ua rau cov kuab tshuaj taug kev up daim ntawv , qhov twg nws ntsib thiab dissolves tus number case. Cov kua nplaum yaj (theem mobile) maj mam mus up daim ntawv (cov theem nyob ruaj ruaj) thiab cais tawm mus rau hauv cov khoom sib txawv.

Ib yam li ntawd, nws raug nug, vim li cas qee cov tshuaj tsis txav mus rau daim ntawv chromatography?

Vim tias lawv siv sijhawm ntau yaj nyob rau theem nyob ruaj khov thiab sijhawm tsawg dua hauv theem mobile, lawv tsis yog mus taug kev ceev heev nce tus ntawv . Txoj kev nyiam rau ib qho chaw sib faib nws lub sij hawm ntawm ob qho tib si immiscible solvents (cov kuab tshuaj xws li hexane thiab dej uas yuav tsis sib tov) yog hu ua partition.

Kuj Paub, ntawv chromatography ua haujlwm li cas? Chromatography yog ib txoj hauv kev sib cais cov sib tov los ntawm kev siv cov kuab tshuaj txav ntawm cov lim ntawv . Ib qho kev sib tov sib xyaw yog pom nyob ze ntawm ib kawg ntawm qhov ntawv thiab ces qhuav. Qhov kawg ntawm ntawv , nyob ze ntawm qhov chaw, ces dipped rau hauv cov kuab tshuaj yam tsis tau submerging qhov chaw nws tus kheej.

Tom qab ntawd, lo lus nug yog, dab tsi yuav tshwm sim thaum lub sij hawm hnyav tsiv teb tsaws ntawm daim ntawv?

Raws li cov kuab tshuaj maj mam mus up daim ntawv , cov khoom sib txawv ntawm cov kua roj vanish sib txawv ntawm cov nqi sib txawv thiab cov khoom sib xyaw tau muab cais ua cov xim sib txawv. Daim duab qhia tias lub phaj yog dab tsi muaj peev xwm zoo li tom qab lub kuab tshuaj tau tsiv mus yuav luag rau saum.

Vim li cas cov dej nkag mus hauv daim ntawv piav qhia qhov no?

Dej creeps up daim ntawv vim kev ua ntawm capillary. Qhov no yog thaum sib txuas ntawm cov kua molecules rau lawv tus kheej yog tsawg dua qhov attraction rau lwm yam khoom ntawm molecules yog kov.

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