Video: Yuav ua li cas plaub txheej txheem tshwm sim hauv ib pawg spectrometer?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Raws li Model 1 plaub txheej txheem dab tsi tshwm sim hauv ib pawg spectrometer ? Ionization, acceleration, deflection, thiab nrhiav kom tau.
Ntxiv mus, yuav ua li cas tshwm sim nyob rau hauv ib tug loj spectrometer?
A loj spectrometer tsim cov khoom siv hluav taws xob (ions) los ntawm cov khoom siv tshuaj uas yuav tsum tau soj ntsuam. Cov loj spectrometer ces siv hluav taws xob thiab magnetic teb los ntsuas qhov pawg ("qhov hnyav") ntawm cov nqi them.
Qhov thib ob, yog vim li cas ob peb 2+ ions tsim nyob rau hauv ib tug loj spectrometer? Cov molecules raug txheeb xyuas los ntawm kev soj ntsuam lawv cov kev txav hauv hluav taws xob thiab cov hlau nplaum. Feem ntau ntawm ions tsim nqa tus nqi ntawm +1. Qhov no yog vim nws siv lub zog loj heev kom tshem tawm cov hluav taws xob los ntawm lub atom uas twb muaj lawm zoo; cov electrons ntxiv yog nruj dua nyob rau hauv orbit.
Ua raws li qhov no, yuav ua li cas ions tsim hauv ToF huab hwm coj spectrometer?
Ib qho daim ntawv ntawm pawg spectrometry yog lub sijhawm ya davhlau ( ToF ) pawg spectrometry . Hauv cov txheej txheem no, cov khoom ntawm cov khoom yog ionised rau daim ntawv 1+ ions uas tau nrawm kom lawv txhua tus muaj tib lub zog kinetic. Lub sij hawm coj mus ncig ib qho kev ncua deb yog siv los nrhiav qhov pawg ntawm txhua tus ion hauv tus qauv.
Dab tsi yog peb lub ntsiab lus tseem ceeb ntawm lub spectrometer loj?
A loj spectrometer muaj peb yam : ib ion, a pawg analyzer, thiab ib tug detector. Lub ionizer hloov ib feem ntawm cov qauv mus rau ions.
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