Video: MZ tus nqi suav li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus naj npawb ntawm electrons tshem tawm yog tus lej them nqi (rau qhov zoo ions). m/z sawv cev rau huab hwm coj faib los ntawm tus lej xov tooj thiab kab rov tav axis nyob rau hauv ib pawg spectrum yog qhia nyob rau hauv units ntawm m/z . Txij li z yog yuav luag 1 nrog GCMS, qhov m/z tus nqi feem ntau suav hais tias yog qhov loj.
Raws li, MZ txhais li cas hauv huab hwm coj spectrometry?
m/z ( pawg -to-charge ratio) zaj sawv cev rau kev tshuaj xyuas tshuaj. Li no, lub pawg spectrum ntawm tus qauv yog ib tug qauv sawv cev rau kev faib ntawm ions los ntawm pawg (ntau yog: pawg -to-charge ratio) hauv ib qho piv txwv. Nws yog ib qho histogram feem ntau tau siv ib qho cuab yeej hu ua a loj spectrometer.
Tsis tas li ntawd, koj ua li cas thiaj nrhiav tau qhov loj los them tus nqi? Hauv pawg spectroscopy, ua huab hwm coj-rau-them ratio (symbols: m/z, m/e) ntawm ib tug cation yog sib npaug rau cov pawg ntawm cation faib los ntawm nws nqi . Txij li thaum nqi ntawm cation tsim nyob rau hauv lub pawg spectrometer yuav luag ib txwm +1, lub huab hwm coj-rau-them ratio ntawm ib qho cation feem ntau yog sib npaug rau pawg ntawm cation.
Ib yam li ntawd, lub hauv paus ncov suav li cas?
kev txheeb xyuas cov tshuaj sib xyaw ua ke… spectrum hu ua pib ncov , thiab nws siv yog arbitrarily teem ntawm tus nqi ntawm 100. Tus ncov ntawm m / z = 72 yog cov molecular ion thiab xws li muab cov molecular loj ntawm cov molecule. Hauv kev daws teeb meem loj spectrometry, qhov loj ntawm molecular ion tuaj yeem ntsuas…
Txoj cai 13 yog dab tsi?
Cov txoj cai 13 hais tias tus qauv ntawm ib qho compound yog ntau n ntawm 13 (cov molar loj ntawm CH) ntxiv rau qhov seem r.
Pom zoo:
Dab tsi yog qhov txawv ntawm ib puag ncig lapse tus nqi thiab adiabatic lapse tus nqi?
A. Ib puag ncig lapse tus nqi yog hais txog qhov kub thiab txias nrog nce qhov siab hauv troposphere; uas yog qhov kub ntawm ib puag ncig ntawm qhov chaw sib txawv. Nws implies tsis muaj huab cua txav. Adiabatic txias tsuas yog cuam tshuam nrog huab cua ascending, uas txias los ntawm kev nthuav dav
Dab tsi yog ib puag ncig lapse tus nqi thiab adiabatic lapse tus nqi?
Recap • Lapse Rate yog tus nqi uas kub qis dua thaum qhov siab nce hauv huab cua • Ib puag ncig lapse tus nqi yog tus nqi uas kub qis dua thaum tus nqi tsis cuam tshuam los ntawm huab cua saturation • Environmental lapse rate txo sai dua thaum huab cua tsis ruaj khov. tsis ruaj khov
Yuav ua li cas koj thiaj nrhiav tau tus nqi ploj ntawm tus nqi tsim?
Tus nqi ntawm ib qho tshuaj tiv thaiv yog qhov kev hloov hauv kev concentration ntawm qhov kev hloov ntawm lub sijhawm. Cov tshuaj tiv thaiv tuaj yeem txhais tau li no: tus nqi ploj ntawm A tus nqi = −Δ [A] Δt. tus nqi ploj ntawm B tus nqi = − Δ [B] Δt. tus nqi tsim ntawm C tus nqi = Δ [C] Δt. tus nqi tsim ntawm D) tus nqi = Δ [D] Δt
Yuav ua li cas koj thiaj nrhiav tau tus nqi siab tshaj plaws ntawm lub quadratic muaj nuj nqi?
Yog tias koj tau txais cov mis y = ax2 + bx + c, ces koj tuaj yeem pom tus nqi siab tshaj plaws uas siv cov mis max = c- (b2 / 4a). Yog tias koj muaj qhov sib npaug y = a (x-h) 2 + k thiab theatrem tsis zoo, ces qhov siab tshaj plaws yog k
Txhais li cas los ntawm tus nqi ntws ntawm tus nqi hluav taws xob?
Ib coulomb ib ob