Dab tsi yog qhov yuav tsum tau xav txog hauv kev xaiv cov kuab tshuaj rau kev rho tawm?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2024-01-18 08:18

Cov hauv qab no yuav tsum tau xav txog thaum xaiv cov kuab tshuaj rau kev lag luam:

• kuab tshuaj zog (kev xaiv);
• polarity;
• boiling kub - qhov no yuav tsum tsis tshua muaj nyob rau hauv thiaj li yuav pab kom tshem tawm cov kuab tshuaj los ntawm cov khoom;
• latent cua sov ntawm vaporization;

Tom qab ntawd, ib tug kuj yuav nug, uas hnyav yog qhov zoo tshaj plaws rau extraction?

Cov kuab tshuaj uas tsim nyog tshaj yog cov dej sib tov uas muaj ethanol, methanol , acetone , thiab ethyl acetate hmoov . Ethanol tau paub tias yog ib qho hnyav hnyav rau polyphenol extraction thiab muaj kev nyab xeeb rau tib neeg noj.

Ib sab saum toj no, dab tsi yog qee qhov siv hnyav rau kev rho tawm? Feem ntau siv cov kuab tshuaj xws li ethyl acetate (8.1%), diethyl ether (6.9%), dichloromethane (1.3%) thiab chloroform (0.8%) yaj mus txog 10% hauv dej. Dej kuj yaj hauv cov organic cov kuab tshuaj ethyl acetate (3%), diethyl ether (1.4%), dichloromethane (0.25%) thiab chloroform (0.056%).

Ntawm no, koj yuav xaiv qhov hnyav npaum li cas?

Cov qauv siv rau xaiv ib tsim nyog recrystallization kuab tshuaj suav nrog: a.) nrhiav a kuab tshuaj nrog lub siab kub coefficient. Cov kuab tshuaj yuav tsum tsis txhob yaj lub compound ntawm qhov kub thiab txias (uas muaj xws li chav tsev kub), tab sis yuav tsum dissolve lub compound nyob rau hauv high kub.

Vim li cas acetone yog cov kuab tshuaj zoo rau kev rho tawm?

Acetone yog a zoo kuab tshuaj vim nws muaj peev xwm yaj ob qho tib si polar thiab nonpolar tshuaj, thaum lwm yam cov kuab tshuaj tsuas tuaj yeem yaj ib lossis lwm qhov. Qhov no tso cai acetone yuav tsum tau ntxiv rau hauv dej los pab yaj cov tshuaj nyob rau hauv ib tug scientific chaw.