Video: Qhov kev daws teeb meem hauv gas chromatography yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv chromatography , daws teeb meem yog ib qho kev ntsuas ntawm kev sib cais ntawm ob lub ncov ntawm qhov sib txawv tuav lub sij hawm t hauv a chromatogram.
Hais txog qhov no, kev daws teeb meem txhais li cas hauv chromatography?
Kev daws teeb meem . Cov daws teeb meem ntawm ib elution yog ib qho kev ntsuas ntawm qhov zoo npaum li cas ob elution peaks ua tau yuav txawv hauv a chromatographic kev sib cais. Nws yog txhais raws li qhov sib txawv ntawm lub sijhawm khaws cia ntawm ob lub ncov, muab faib los ntawm kev sib xyaw ua ke ntawm cov elution peaks.
Tsis tas li ntawd, lub siab daws teeb meem roj chromatography yog dab tsi? LIQUID CHROMATOGRAPHY – GAS CHROMATOGRAPHY Siab daws teeb meem roj chromatography (HRGC) yog cov txheej txheem tsim nyog tshaj plaws rau kev tshuaj xyuas cov tshuaj tsis haum tshuaj. Kev taw qhia ntawm loj tus nqi ntawm cov kuab tshuaj mus rau hauv a GC kem yuav tsum tau siv cov txheej txheem tshwj xeeb los cais cov kuab tshuaj los ntawm cov qauv xaiv.
Dhau li ntawm no, koj pom qhov kev daws teeb meem ntawm GC li cas?
Kev sib npaug (1) qhia tias lub daws teeb meem yog qhov sib txawv ntawm cov sij hawm khaws cia tau muab faib los ntawm qhov nruab nrab ncov dav. Nyob rau hauv lub ncov nrog Gaussian faib, lub ncov dav yog W = 4 σ (qhov twg σ yog tus qauv sib txawv) thiab lub ncov FWHM yog W0.
Qhov kub li cas cuam tshuam txog kev daws teeb meem hauv cov roj chromatography?
Nce tus cab kuj gas flow rate thiab/los yog kub yuav xa cov vapors mus rau hauv kem sai dua, uas yuav txo lub sij hawm tuav thiab ua phem rau daws teeb meem . Txo cov kub thiab/lossis tus nqi ntws nce lub sij hawm tuav thiab broadens lub peaks.
Pom zoo:
Cov txheej txheem ntawm kev tsim cov kev daws teeb meem yog dab tsi?
Kev daws yog tsim thaum ib yam khoom hu ua thesolute 'dissolves' rau hauv lwm yam khoom hu ua hnyav.Dissolving yog thaum lub solute tawg los ntawm ib tug loj siv lead ua ntawm molecules mus rau ntau me me los yog ib tug molecules. Lawv ua qhov no los ntawm rub tawm cov ions thiab tom qab ntawd ncig cov ntsev molecules
Dab tsi yog qhov kev daws teeb meem ntawm kab?
Ib qhov system ntawm kab zauv sib npaug muaj ob lossis ntau qhov sib npaug piv txwv li. y = 0.5x + 2 y = x - 2. Cov kev daws teeb meem ntawm xws li ib qho system yog qhov kev txiav txim khub uas yog kev daws rau ob qho tib si sib npaug. Kev daws rau qhov system yuav nyob rau hauv qhov chaw uas ob kab sib tshuam
Dab tsi yog qhov sib xyaw ua ke uas tsim cov hydrogen ions hauv kev daws teeb meem?
Kua qaub. compound uas tsim hydrogen ions hauv kev daws. puag. compound uas tsim hydroxide ions hauv kev daws. tsis pub
Qhov kev daws teeb meem ntawm lub stopwatch yog dab tsi?
Kev daws teeb meem muaj feem xyuam rau tus lej ntawm tus lej ntawm lub cuab yeej tso saib rau digital stopwatch, lossis qhov tsawg tshaj plaws los yog kawm tiav ntawm lub ntsej muag ntawm analog stopwatch. Piv txwv li, yog hais tias ib tug stopwatch zaub qhia ob tug lej mus rau sab xis ntawm tus zauv point, nws muaj ib tug daws teeb meem ntawm 0.01 s (10 ms, los yog 1/100 ntawm ib tug thib ob)
Dab tsi yog qhov concentration ntawm hydronium ions nyob rau hauv ib qho kev daws teeb meem?
Cov dej ntshiab yog suav tias yog nruab nrab thiab qhov concentration ntawm hydronium ion yog 1.0 x 10-7 mol / L uas yog sib npaug rau hydroxide ion concentration