Video: Gas kua chromatography siv rau dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Gas chromatography (GC) yog ib hom ntawm siv chromatography nyob rau hauv analytical chemistry rau kev sib cais thiab txheeb xyuas cov tebchaw uas tuaj yeem vaporized yam tsis muaj decomposition. Hom siv ntawm GC suav nrog kev ntsuas qhov purity ntawm ib yam khoom, lossis cais cov khoom sib txawv ntawm cov khoom sib xyaw.
Tsis tas li, cov kua roj chromatography ua haujlwm li cas?
Hauv gas chromatography , tus cab kuj gas yog theem mobile. Tus nqi ntws ntawm cov cab kuj tau ua tib zoo tswj kom muab qhov kev sib cais meej tshaj plaws ntawm cov khoom hauv cov qauv. Cov qauv raug ntsuas yog txhaj rau hauv cov cab kuj gas siv lub syringe thiab instantly vaporizes (dub mus rau hauv gas daim ntawv).
Tsis tas li, dab tsi yog cov cuab yeej siv hauv cov roj chromatography? Gas chromatography detectors
- GC DETECTORS.
- FLAME IONIZATION DETECTOR (FID):
- NITROGEN PHOSPHORUS DETECTOR (NPD):
- ELECTRON CAPTURE DETECTOR (ECD):
- ThermAL CONDUCTIVITY DETECTOR (TCD):
- FLAME PHOTOMETRIC DETECTOR (FPD):
- PHOTOIONIZATION DETECTOR (PID):
- ELECTROLYTIC CONDUCTIVITY DETECTOR (ELCD):
Tib neeg kuj nug, puas yog gas chromatography thiab gas kua chromatography tib yam?
Raws li lub npe qhia High Performance Ua kua Chromatography siv a ua kua mobile theem thiab gas chromatography siv a gas raws li tus cab kuj. Cov kua dej feem ntau yog sib xyaw ntawm cov kuab tshuaj ntawm cov polarities sib xws thaum nyob hauv gas chromatography lub mobile theem yog ib tug siab purity gas.
Lub ncov txhais li cas hauv gas chromatography?
Feem ntau, x-axis ntawm lub gas chromatogram qhia lub sij hawm npaum li cas rau cov analytes kom dhau ntawm kab thiab mus txog qhov loj spectrometer ntes. Cov ncov uas tau pom sib raug rau lub sij hawm uas txhua yam ntawm cov khoom mus txog lub ntes.
Pom zoo:
Cov kua dej thiab hom kua dej yog dab tsi?
Cov kua dej tuaj yeem muab faib ua plaub yam yooj yim. Cov kua dej zoo tagnrho. Cov kua dej tiag tiag. Newtonian kua dej. Tsis yog-Newtonian Fluid
Gas kua chromatography ua haujlwm li cas?
Hauv cov roj chromatography, cov pa roj carbon monoxide yog cov theem mobile. Tus nqi ntws ntawm cov cab kuj tau ua tib zoo tswj kom muab qhov kev sib cais meej tshaj plaws ntawm cov khoom hauv cov qauv. Cov qauv raug ntsuas yog txhaj rau hauv cov cab kuj siv cov syringe thiab tam sim ntawd vaporizes (dhau mus rau hauv daim ntawv roj)
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Vim li cas cov kua siv lead ua kua hloov xim nrog kub?
Cov molecules hauv cov kua siv lead ua kua tuaj yeem txav mus los ntawm nws tus kheej, xws li hauv cov kua, tab sis nyob twj ywm me ntsis, xws li hauv cov khoom siv lead ua (khoom). Cov kua siv lead ua kua no teb rau kev hloov pauv ntawm qhov kub thiab txias los ntawm kev hloov xim. Raws li qhov kub thiab txias, lawv cov xim hloov ntawm liab mus rau txiv kab ntxwv, daj, ntsuab, xiav, thiab ntshav
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom