Qhov sib txawv tseem ceeb ntawm ascending thiab descending paper chromatography yog tias ascending paper chromatography koom nrog kev txav ntawm cov kuab tshuaj nyob rau hauv ib qho kev nce mus rau sab saud whereas descending paper chromatography suav nrog kev txav ntawm cov kuab tshuaj nyob rau hauv nqes.
Paper chromatography yog ib hom ntawm cov txheej txheem chromatographic uas cov khoom hauv cov tshuaj sib xyaw ua ke raug faib thiab muab faib ua cov theem ua kua. Feem ntau, daim ntawv chromatography siv dej ua ib theem ua kua; cov dej uas muaj nyob rau hauv pore ntawm cov ntawv lim siv rau kev tsom xam yog cov theem nyob ruaj khov thaum lub sij hawm txawb txav mus los ntawm qhov chaw nyob ruaj khov no.
Chromatography yog dab tsi?
Chromatography yog ib hom kev tshuaj ntsuam xyuas siv los cais thiab txiav txim siab cov khoom sib xyaw. Thaum lub sij hawm soj ntsuam no, peb yuav tsum tau yaj cov analyte sib tov nyob rau hauv ib tug kua. Cov kua dej no yog hu ua lub sijhawm txawb vim nws ua raws li qhov nruab nrab uas nqa cov khoom siv tshuaj ntsuam xyuas los ntawm lwm cov khoom hu ua lub sijhawm nyob ruaj khov. Ntau yam khoom nyob rau hauv qhov sib tov ces taug kev los ntawm cov theem nyob ruaj ruaj ntawm qhov sib txawv speeds, ua rau kev sib cais ntawm cov khoom. Chromatography tuaj yeem siv rau kev tsom xam ntawm ob qho tib si organic thiab inorganic cov khoom sib xyaw.
Ascending Paper Chromatography yog dab tsi?
Ascending daim ntawv chromatography yog cov txheej txheem tshuaj ntsuam xyuas uas lub sijhawm txawb txav mus los ntawm theem nyob ruaj khov. Peb tuaj yeem hu qhov xwm txheej no "chromatogram ascends". Txhawm rau saib xyuas qhov txav ntawm cov kuab tshuaj nyob rau hauv ib qho kev nce siab, cov kuab tshuaj reservoir yuav tsum pw nyob rau hauv qab ntawm lub thawv peb siv rau kev tsom xam.
Hauv cov txheej txheem no, daim ntawv chromatographic nrog cov lus qhia uas muaj cov qauv me me yog dipped rau hauv cov kuab tshuaj nyob rau hauv qab, yog li cov pob txha tseem zoo tshaj qhov hnyav. Tom qab qee lub sijhawm, peb tuaj yeem soj ntsuam cov kuab tshuaj, nrog rau cov ntsiab lus ntawm cov tshuaj sib xyaw ua ke, tab tom taug kev mus rau saum cov ntawv chromatographic. Tom qab cov kuab tshuaj pem hauv ntej tau mus txog qhov kawg ntawm daim ntawv, peb tuaj yeem nqa tawm ntawm daim ntawv los ntawm cov kuab tshuaj los txiav txim siab tus nqi txheeb ze ntawm txhua qhov sib xyaw hauv cov tshuaj analyte sib xyaw uas tau taug kev los ntawm daim ntawv hla lub sijhawm tshwj xeeb.
Dab tsi yog Descending Paper Chromatography?
Descending paper chromatography yog cov txheej txheem tshuaj ntsuam xyuas uas cov theem ntawm lub xov tooj ntawm tes txav mus los ntawm theem nyob ruaj khov. Nyob rau hauv lwm yam lus, nyob rau hauv no txoj kev, txoj kev loj hlob ntawm daim ntawv tshwm sim vim lub zog ntawm cov kuab tshuaj downwards ntawm daim ntawv. Yog li ntawd, cov kuab tshuaj reservoir yuav tsum nyob rau sab saum toj ntawm daim ntawv. Nyob rau hauv cov txheej txheem no, lub zog ntawm cov kuab tshuaj yog tswj los ntawm lub ntiajteb txawj nqus thiab capillary nkaus.
Qhov txawv ntawm Ascending thiab Descending Paper Chromatography yog dab tsi?
Ascending and descending paper chromatography yog ob hom chromatographic cov tswv yim. Qhov sib txawv tseem ceeb ntawm ascending thiab descending daim ntawv chromatography yog hais tias ascending ntawv chromatography koom nrog lub zog ntawm cov kuab tshuaj nyob rau hauv lub upward direction whereas descending daim ntawv chromatography koom nrog lub zog ntawm cov hnyav nyob rau hauv lub downward direction.
Ntxiv mus, nyob rau hauv ascending ntawv chromatography, txav tshwm sim vim capillary nkaus thaum nyob rau hauv descending ntawv chromatography, txav tshwm sim vim capillary kev txiav txim thiab lub ntiajteb txawj nqus.
Hauv qab infographic tabulates qhov sib txawv ntawm ascending thiab descending ntawv chromatography.
Summary – Ascending vs Descending Paper Chromatography
Ascending and descending paper chromatography yog ob hom chromatographic cov tswv yim. Qhov sib txawv tseem ceeb ntawm ascending thiab descending daim ntawv chromatography yog hais tias ascending ntawv chromatography koom nrog lub zog ntawm cov kuab tshuaj nyob rau hauv lub upward direction whereas descending daim ntawv chromatography koom nrog lub zog ntawm cov hnyav nyob rau hauv lub downward direction.
