Ntawv chromatography,ib txoj hauv kev uas tuaj yeem ntsuas qhov huv ntawm cov tshuaj thiab sib cais sib xyaw. Nws yog qhov yooj yim heev thiab muaj txiaj ntsig kev txheeb xyuas vim tias nws tuaj yeem ua tiav qhov kev tshuaj xyuas sai thiab muaj qee qhov kev txwv ntawm cov ntaub ntawv. Lub hauv paus ntsiab lus sib cais ntawm cov ntawv chromatography yog tib yam li ntawm txheej txheej chromatography nyias. Cov khoom siv tau faib nyob rau theem ruaj khov thiab theem mobile. Cov theem nyob ruaj ruaj feem ntau yog lim cov ntawv, thiab cov ntawv txawb yuav ntws nrog cov tshuaj ntawm nws. Cov cuab yeej no yuav raug cais raws li qhov sib txuas ntawm cov tshuaj sib txawv hauv kev sib xyaw rau theem ruaj khov thiab qhov ua kom yooj yim ntawm lub sijhawm txawb. Thaum txheeb xyuas cov xim, yog tias muaj ntau dua ib yam khoom hauv cov xim, cov tshuaj ntawm cov xim sib txawv yuav raug cais raws li qhov sib txawv ntawm cov kuab tshuaj thiab cov kuab tshuaj. Qhov no vim tias cov qauv sib txawv ntawm cov khoom sib txawv yuav muaj qhov sib txawv sib txawv. Cov kev sib txawv sib txawv no ua rau sib txawv ntawm qhov hnyav, yog li ntau qhov kev daws teeb meem yuav ua rau cov dej sib txawv ntawm cov kuab tshuaj sib kis thiab zoo li cov pob zeb nyob rau theem ruaj khov, uas tuaj yeem tshuaj xyuas raws li qhov chaw thiab qhov loj me ntawm qhov chaw nyob ruaj khov.
Roj chromatography. Muaj peev xwm muab faib ua roj-khoom chromatography thiab roj-kua chromatography. Cov pa roj chromatography hais txog cov txheej txheem sib cais chromatographic uas theem mobile yog roj thiab theem nyob ruaj khov. Piv txwv, cov pa roj carbon activated thiab silica gel tau siv ua ntu ntu; Cov kua roj chromatography hais txog txoj kev sib cais chromatographic nyob rau hauv uas cov theem mobile yog roj thiab theem nyob ruaj khov yog kua. Piv txwv li, cov khoom siv inert diatomite coated nrog squalane tuaj yeem siv los cais thiab txiav txim siab tias muaj pes tsawg methane, acetylene, propylene, propane thiab lwm yam khoom tsis huv hauv ethylene.
