Qhov sib txawv tseem ceeb ntawm atomic absorption thiab atomic emission yog tias atomic absorption piav qhia tias atoms nqus tau qee qhov wavelengths los ntawm electromagnetic radiation whereas atomic emission piav qhia tias atoms emit tej wavelengths.
Kev nqus thiab emission ntawm atom pab txheeb xyuas cov atoms thiab muab ntau cov ntsiab lus txog lawv. Thaum nqus thiab emission spectrum ntawm ib hom yog muab tso ua ke, lawv tsim ib tug nruam spectrum. Yog li ntawd, atomic absorption thiab atomic emission yog complementary rau ib leeg.
Atomic Absorption yog dab tsi?
Ib qho xim sib xyaw pom ntawm peb lub qhov muag hauv cov xim tshwj xeeb vim nws nqus lub teeb los ntawm qhov pom ntau yam. Qhov tseeb, nws absorbs cov xim ntawm cov xim uas peb pom. Piv txwv li, peb pom ib yam khoom raws li ntsuab vim nws absorbs ntshav lub teeb los ntawm qhov pom ntau yam. Yog li ntawd, liab doog yog lub complementary xim ntawm ntsuab. Ib yam li ntawd, atoms lossis molecules kuj nqus tau qee qhov wavelengths los ntawm electromagnetic radiation (cov wavelengths no tsis tas nyob rau hauv qhov pom ntau yam). Thaum lub teeb hluav taws xob hluav taws xob hla dhau los ntawm cov qauv uas muaj cov atoms gaseous, cov atoms nqus tau qee qhov wavelengths. Lub zog absorbed pab kom excite av electrons mus rau theem siab nyob rau hauv lub atom. Peb hu qhov kev hloov hluav taws xob no. Lub zog sib txawv ntawm ob theem yog muab los ntawm photons hauv hluav taws xob hluav taws xob.
Vim qhov sib txawv ntawm lub zog no yog qhov sib txawv thiab tsis tu ncua, tib hom atoms yuav ib txwm nqus tib lub wavelengths los ntawm cov hluav taws xob muab. Ib qho kev nqus spectrum yog ib zaj duab xis kos ntawm absorbance thiab wavelength. Qee zaum es tsis txhob wavelength, zaus lossis yoj tus lej kuj tuaj yeem siv rau hauv x-axis. Log nqus tus nqi lossis tus nqi sib kis kuj tseem siv rau y-axis hauv qee lub sijhawm.
Daim duab 01: Kev nqus thiab tso pa tawm hauv daim duab yooj yim
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. Thiab, hom spectrum no yuav muaj ntau txoj kab nqaim heev.
Atomic Emission yog dab tsi?
Atomic emission yog emission ntawm electromagnetic hluav taws xob los ntawm atoms. Atoms tuaj yeem zoo siab mus rau qib siab dua yog tias qhov xav tau ntawm lub zog tau muab 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 lub zog tso tawm piv rau wavelength muab ib qho emission spectrum.
Daim duab 02: Emission Spectrum of Oxygen
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.
Qhov txawv ntawm Atomic Absorption thiab Atomic Emission yog dab tsi?
Atomic absorption yog qhov nqus hluav taws xob hluav taws xob los ntawm atoms thaum atomic emission yog emission ntawm electromagnetic hluav taws xob los ntawm atoms. Yog li, qhov sib txawv tseem ceeb ntawm atomic absorption thiab atomic emission yog qhov atomic absorption piav qhia tias atoms nqus tau qee lub wavelengths los ntawm electromagnetic radiation whereas atomic emission piav qhia tias atoms emit tej wavelengths li cas.
Tsis tas li ntawd, atomic absorption yuav tsum muaj qhov chaw uas tuaj yeem tawm hluav taws xob thaum lub atomic emission tshwm sim txawm tias tsis muaj qhov chaw uas tawm hluav taws xob. Ntxiv mus, los ntawm absorbing, cov electrons nyob rau hauv ib lub atom zoo siab rau lub zog siab dua. Los ntawm emission, zoo siab electrons rov qab los rau qis dua. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm atomic absorption thiab atomic emission.
Summary - Atomic Absorption vs Atomic Emission
Atomic absorption thiab atomic emission yog ob qhov xwm txheej uas tshwm sim ib txhij. Qhov sib txawv tseem ceeb ntawm atomic absorption thiab atomic emission yog tias atomic absorption piav qhia txog yuav ua li cas atoms nqus qee qhov wavelengths los ntawm electromagnetic radiation whereas atomic emission piav qhia tias atoms emit tej wavelengths li cas.
