Qhov sib txawv tseem ceeb ntawm atomic absorption spectroscopy thiab UV pom spectroscopy yog tias atomic absorption spectroscopy yog raws li kev nqus ntawm lub teeb los ntawm atoms lossis ions, whereas UV pom spectroscopy cuam tshuam nrog kev nqus lossis kev cuam tshuam ntawm ib feem ntawm UV ntau thiab Ua tiav cov cheeb tsam uas nyob ib sab pom ntawm electromagnetic spectrum los ntawm atoms lossis ions.
Spectroscopy yog ib qho kev tshuaj ntsuam xyuas uas peb tuaj yeem kawm txog kev cuam tshuam ntawm cov teeb meem thiab hluav taws xob hluav taws xob raws li kev ua haujlwm ntawm lub wavelength lossis zaus ntawm cov hluav taws xob.
Atomic Absorption Spectroscopy yog dab tsi?
Atomic absorption spectroscopy yog ib qho kev tshuaj ntsuam xyuas uas muaj txiaj ntsig los txiav txim siab cov ntsiab lus tshuaj hauv ib qho piv txwv kom muaj nuj nqis. Cov txheej txheem hauv qhov spectroscopy no nyob ntawm qhov nqus ntawm lub teeb los ntawm cov hlau dawb ions.
Thaum xav txog cov electrons hauv atoms, lawv nyob hauv qee lub zog ntawm ib 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 01: Atomic Absorption Spectrophotometer
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.
YUV pom pom Spectroscopy yog dab tsi?
UV pom spectroscopy yog cov txheej txheem tshuaj xyuas uas siv qhov nqus lossis qhov cuam tshuam ntawm ib feem ntawm UV ntau yam thiab ua tiav cov cheeb tsam pom nyob ib sab ntawm electromagnetic spectrum. Cov txheej txheem no los ntawm ob hom kev nqus spectroscopy thiab reflectance spectroscopy. Nws siv lub teeb nyob rau hauv qhov pom thiab nyob ib sab.
Daim duab 02: UV pom pom Spectrophotometer
Feem ntau, qhov nqus lossis qhov cuam tshuam ntawm qhov pom ntawm lub teeb tuaj yeem cuam tshuam ncaj qha rau cov xim pom ntawm cov tshuaj uas koom nrog hauv cov txheej txheem. Ntawm qhov ntau ntawm cov spectrum no, peb tuaj yeem soj ntsuam cov atoms thiab molecules tuaj yeem hloov pauv hluav taws xob. Ntawm no, kev nqus spectroscopy yog ntxiv rau fluorescence spectroscopy, qhov twg fluorescence cuam tshuam nrog kev hloov ntawm electrons los ntawm lub xeev zoo siab mus rau hauv av. Tsis tas li ntawd, kev nqus tau ntsuas qhov kev hloov ntawm lub xeev hauv av mus rau lub xeev zoo siab.
Cov txheej txheem spectroscopic no muaj txiaj ntsig zoo hauv kev tshuaj xyuas cov qauv sib txawv ntawm ntau npaum li cas, xws li kev hloov pauv hlau ions, cov organic sib txuas ua ke, thiab macromolecules hauv cov kab mob lom. Feem ntau, kev soj ntsuam spectroscopic yog ua los ntawm kev siv cov kev daws teeb meem, tab sis peb kuj tuaj yeem siv cov khoom khib nyiab thiab cov pa roj.
Qhov txawv ntawm Atomic Absorption Spectroscopy thiab UV Pom Pom Spectroscopy
Spectroscopy yog ib qho kev tshuaj ntsuam xyuas uas peb tuaj yeem kawm txog kev cuam tshuam ntawm cov teeb meem thiab hluav taws xob hluav taws xob raws li kev ua haujlwm ntawm lub wavelength lossis zaus ntawm cov hluav taws xob. Qhov sib txawv tseem ceeb ntawm atomic absorption spectroscopy thiab UV pom spectroscopy yog tias atomic absorption spectroscopy yog raws li kev nqus ntawm lub teeb los ntawm atoms lossis ions, thaum UV pom spectroscopy cuam tshuam nrog kev nqus lossis kev cuam tshuam ntawm ib feem ntawm UV ntau yam thiab ua tiav cov cheeb tsam pom nyob ib sab ntawm. electromagnetic spectrum los ntawm atom los yog ions.
Cov infographic hauv qab no nthuav tawm qhov sib txawv ntawm atomic absorption spectroscopy thiab UV pom spectroscopy hauv daim ntawv tabular.
Summary – Atomic Absorption Spectroscopy vs UV Pom Spectroscopy
Spectroscopy yog ib qho kev tshuaj ntsuam xyuas uas peb tuaj yeem kawm txog kev cuam tshuam ntawm cov teeb meem thiab hluav taws xob hluav taws xob raws li kev ua haujlwm ntawm lub wavelength lossis zaus ntawm cov hluav taws xob. Qhov sib txawv tseem ceeb ntawm atomic absorption spectroscopy thiab UV pom spectroscopy yog tias atomic absorption spectroscopy yog raws li kev nqus ntawm lub teeb los ntawm atoms lossis ions, thaum UV pom spectroscopy cuam tshuam nrog kev nqus lossis kev cuam tshuam ntawm ib feem ntawm UV ntau yam thiab ua tiav cov cheeb tsam pom nyob ib sab ntawm. electromagnetic spectrum los ntawm atom los yog ions.
