Vim li cas dej thiaj nkag rau daim ntawv piav qhia qhov no?
Vim li cas dej thiaj nkag rau daim ntawv piav qhia qhov no?

Video: Vim li cas dej thiaj nkag rau daim ntawv piav qhia qhov no?

Video: Vim li cas dej thiaj nkag rau daim ntawv piav qhia qhov no?
Video: Koos Loos - Kuv Ua Tus Txhaum 2024, Kaum ib hlis
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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. Cov sodium bitartrate muaj sodium ion, peb pawg hydroxyl, thiab ob daim ntawv cog lus ob npaug.

Kuj paub 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.

Tom qab ntawd, lo lus nug yog, vim li cas cov xim sib cais hauv chromatography? Cov txheej txheem ntawm chromatography cais cov molecules vim qhov sib txawv solubilities ntawm cov molecules nyob rau hauv ib qho kev xaiv hnyav. Cov kuab tshuaj nqa cov yaj pigments raws li nws txav mus rau daim ntawv. Cov pigments yog nqa ntawm tus nqi sib txawv vim lawv tsis sib npaug zos soluble.

Ib sab saum toj no, tus nqi RF piav qhia txog qib microscopic Vim li cas qhov no tseem ceeb?

Cov Rf nqi piav qhia ntawm a microscopic theem piav qhia txog affinity ntawm ib tug solute rau qhov nruab nrab txhawb piv rau nws nyiam mus nqa nrog los ntawm cov hnyav. Nws yog tseem ceeb vim nws yog qhov kev ncua deb mus los ntawm cov qauv muab faib los ntawm qhov kev ncua deb mus los ntawm cov kuab tshuaj pem hauv ntej hauv chromatography.

Polarity cuam tshuam li cas ntawm daim ntawv chromatography?

Polarity muaj qhov loj cuam tshuam ntawm yuav ua li cas attracted ib tug tshuaj rau lwm yam tshuaj. Qhov loj dua qhov sib txawv, ntau dua polar ib molecule. Koj yuav pom tias thaum koj nce qhov polarity ntawm cov kuab tshuaj, tag nrho cov Cheebtsam ntawm qhov sib tov txav nrawm dua thaum koj chromatography kev sim.

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