Qhov sib txawv tseem ceeb ntawm cov nplaim hluav taws xob spectroscopy thiab atomic absorption spectroscopy yog tias thaum lub sij hawm nplaim hluav taws xob spectroscopy, qee qhov wavelengths tau tawm ntawm atoms, thaum lub sij hawm atomic absorption spectroscopy, qee qhov wavelengths absorbed los ntawm atoms.
Ib qho hluav taws xob hluav taws xob muaj hluav taws xob thiab sib nqus teb oscillating perpendicular rau ib leeg. Yog li, tag nrho ntawm cov hluav taws xob hluav taws xob hluav taws xob wavelengths yog qhov peb hu ua electromagnetic spectrum. Hauv kev sim spectroscopy, peb siv hluav taws xob electromagnetic ntawm cov wavelengths tshwj xeeb los tshuaj xyuas cov qauv. Atomic absorption spectroscopy thiab emission spectroscopy yog ob txoj kev spectrochemical uas muaj txiaj ntsig zoo rau kev txiav txim siab ntau ntawm cov tshuaj siv cov khoom nqus hluav taws xob los yog lub teeb los ntawm cov atoms dawb uas nyob hauv lub xeev gaseous.
Nplaim Emission Spectroscopy yog dab tsi?
Nplaim emission spectroscopy yog cov txheej txheem spectro-analytical muaj txiaj ntsig hauv kev txiav txim siab cov ntsiab lus tshuaj hauv ib qho piv txwv. Qhov no tseem hu ua atomic emission spectroscopy vim nws nyob ntawm qhov emission ntawm electromagnetic ration ntawm atoms. Cov txheej txheem no muaj npe xws li vim nws siv cov nplaim taws ua lub teeb.
Daim duab 01: Atomic Emission Spectrometer
Atoms tuaj yeem zoo siab mus rau qib siab dua yog tias xav tau lub zog ntxiv rau sab nraud. Lub neej ntawm lub xeev zoo siab yog feem ntau luv. Yog li ntawd, cov tsiaj zoo siab no yuav tsum tso lub zog nqus thiab rov qab los rau hauv av. Peb hu qhov so so.
Kev tso tawm ntawm lub zog tuaj yeem tshwm sim raws li hluav taws xob hluav taws xob, cua sov lossis ob hom. Cov zajlus ntawm tso tawm zog piv rau wavelength muab ib tug emission spectrum. Ntxiv mus, txhua lub ntsiab lus muaj qhov tshwj xeeb emission spectrum raws li lawv muaj qhov tshwj xeeb nqus spectrum. Yog li, peb tuaj yeem ua tus cwj pwm hluav taws xob los ntawm qhov chaw los ntawm emission. Kab spectra tshwm sim thaum cov hom radiating yog ib tus neeg atomic particles uas tau sib cais zoo hauv cov roj.
Atomic Absorption Spectroscopy yog dab tsi?
Atomic absorption spectroscopy yog cov txheej txheem spectro-analytical muaj txiaj ntsig hauv kev txiav txim siab cov ntsiab lus tshuaj hauv ib qho piv txwv ntau. Cov txheej txheem no nyob ntawm qhov nqus ntawm lub teeb los ntawm cov hlau dawb ions.
Electrons yog nyob rau hauv qee lub zog ntawm lub atom. Peb hu cov qib zog atomic orbitals. Cov qib zog no yog quantized es tsis yog tas mus li. Cov electrons nyob rau hauv lub atomic orbitals tuaj yeem txav los ntawm ib qib zog mus rau lwm qhov los ntawm kev nqus lossis tso tawm lub zog uas lawv muaj. Txawm li cas los xij, lub zog uas electron absorbs lossis emits yuav tsum sib npaug ntawm lub zog sib txawv ntawm ob theem zog (nruab nrab ntawm cov electron yuav txav mus).
Daim duab 02: Ib qho Atomic Absorption Spectrometer
Vim tias txhua yam tshuaj lom neeg muaj tus lej ntawm cov hluav taws xob tshwj xeeb ntawm nws lub xeev hauv av, lub atom yuav nqus lossis tso tawm lub zog hauv cov qauv tshwj xeeb rau nws tus kheej lub cev. Yog li ntawd, lawv yuav nqus / emit photons nyob rau hauv ib tug coj txawv txawv qauv. Tom qab ntawd peb tuaj yeem txiav txim siab qhov muaj pes tsawg leeg ntawm tus qauv los ntawm kev ntsuas qhov hloov pauv ntawm lub teeb wavelength thiab lub teeb siv.
Tom qab lub teeb dhau los ntawm cov qauv atomic, yog tias peb sau nws, peb tuaj yeem hu nws ua atomic spectrum. Nws qhia cov yam ntxwv ntawm ib hom atom. Yog li ntawd, peb tuaj yeem siv nws los txheeb xyuas lossis lees paub tus kheej ntawm ib hom tsiaj. Hom spectrum no yuav muaj ntau txoj kab nqaim heev.
Dab tsi yog qhov txawv ntawm Nplaim Emission Spectroscopy thiab Atomic Absorption Spectroscopy?
Nplaim emission spectroscopy thiab atomic absorption spectroscopy yog cov txheej txheem spectro-analytical muaj txiaj ntsig hauv kev txiav txim siab cov ntsiab lus tshuaj hauv cov qauv ntau npaum li cas. Qhov sib txawv tseem ceeb ntawm cov nplaim hluav taws xob spectroscopy thiab atomic absorption spectroscopy yog tias thaum lub sij hawm nplaim hluav taws xob spectroscopy, qee qhov wavelengths tau tawm ntawm atoms, thaum lub sij hawm atomic absorption spectroscopy, qee qhov wavelengths absorbed los ntawm atoms.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov nplaim hluav taws xob spectroscopy thiab atomic absorption spectroscopy hauv daim ntawv tabular.
Summary – Nplaim Emission Spectroscopy vs Atomic Absorption Spectroscopy
Nplaim emission spectroscopy thiab atomic absorption spectroscopy yog cov txheej txheem spectro-analytical muaj txiaj ntsig hauv kev txiav txim siab cov ntsiab lus tshuaj hauv cov qauv ntau npaum li cas. Qhov sib txawv tseem ceeb ntawm cov nplaim hluav taws xob spectroscopy thiab atomic absorption spectroscopy yog tias thaum lub sij hawm nplaim hluav taws xob spectroscopy, qee qhov wavelengths tau tawm ntawm atoms, thaum lub sij hawm atomic absorption spectroscopy, qee qhov wavelengths absorbed los ntawm atoms.
