Tus nqi RF me me txhais li cas?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

A txi rf qhia tau hais tias qhov txav molecules tsis soluble heev hauv hydrophobic (tsis-polar) hnyav; Lawv loj dua thiab / lossis muaj kev sib raug zoo rau cov hydrophillicpaper (lawv muaj ntau pawg polar) dua li cov molecules nrog loj dua Rf.

Yog li ntawd, tus nqi RF qhia koj li cas?

Retention factor, los yog Rf , yog txhais raws li qhov deb mus los ntawm lub compound muab faib los ntawm qhov kev ncua deb mus los ntawm cov hnyav. Hloov pauv, yog tias koj paub cov qauv ntawm cov tebchaw hauv kev sib tov, koj tuaj yeem kwv yees tias qhov sib xyaw ntawm cov polarity tsawg yuav muaj qhov loj dua Rf nqi tshaj ib lub polarcompound khiav ntawm tib lub phaj.

Kuj Paub, qhov kev sib raug zoo ntawm Rf tus nqi thiab solubility yog dab tsi? Cov Rf nqi qhia li cas soluble cov xim tshwj xeeb yog nyob rau hauv cov kuab tshuaj los ntawm qhov siab npaum li cas cov xim txav ntawm daim ntawv. Ob pigments nrog rau ib yam Rf nqi tej zaum yuav zoo tib yam molecules. Me me Rf nqi yuav qhia tias loj dua, tsawg dua soluble pigments thaum lub siab heev soluble pigments muaj Rf nqi nyob ze toone.

Ua raws li qhov no hauv kev txiav txim siab, tus nqi qis RF txhais li cas?

Txhais . Rf = nrug taug kev bysubstance/nruab deb taug kev los ntawm hnyav pem hauv ntej. Ib siab Rf (Ie0.92) yuav xa mus rau ib yam khoom uas tsis yog-polar. Piv txwv li, cov khoom tau txav mus rau 92% ntawm tag nrho cov kev deb ntawm cov kuab tshuaj mus. A qis Rf tus nqi (0.10) yuav xa mus rau ib yam khoom uas yog heev polar.

Tus nqi RF hauv chromatography yog dab tsi?

Hauv ntawv chromatography , RF stands forretention factor, los yog qhov deb ntawm cov kua compound mus txog a chromatography phaj. Txhua qhov sib xyaw muaj qhov tshwj xeeb RFvalue rau txhua qhov hnyav hnyav, thiab RF nqi yog siv los sib piv cov qauv uas tsis paub nrog cov sib txuas paub.