Qhov sib txawv tseem ceeb ntawm nplaim atomization thiab electrothermal atomization yog cov nplaim atomization muaj qhov rhiab heev dua li electrochemical atomization method.
Qauv atomization yog ib qho tseem ceeb pib kauj ruam hauv atomic absorption spectroscopy. Nws yuav tsum tau hloov dua siab tshiab ntawm ib tug qauv mus rau nws gaseous atoms uas yuav nqus tau cov hluav taws xob. Feem ntau, peb siv cov qauv ua ib qho kev daws teeb meem hauv atomic absorption spectroscopy. Hauv cov txheej txheem no, cov tshuaj tau dhau mus rau hauv ib lub raj me me uas tuaj yeem coj mus rau lub nebulizer. Nyob rau hauv lub nebulizer, cov tshuaj lov mus rau hauv ib tug zoo pos huab. Cov huab cua zoo no tau dhau mus rau atomizer, rhuav cov qauv rau hauv nws tus kheej atoms, uas yog hu ua atomization.
Nplaim Atomization yog dab tsi?
Nplaim atomization yog ib qho kev tshuaj ntsuam xyuas siv nyob rau hauv atomic absorption spectroscopy, uas muaj kev sib tov ntawm ib tug nebulized gaseous oxidant nrog roj uas yog ces dhau mus rau hauv ib tug nplaim taws qhov twg lub tshav kub tso cai rau cov qauv mus rau undergo atomization. Nyob rau hauv cov txheej txheem no, thaum tus qauv mus txog lub nplaim taws, desolvation, volatilization, thiab dissociation tshwm sim. Thaum pib, lub molecular aerosol yog tsim thaum cov kuab tshuaj evaporates. Cov kauj ruam no yog hu ua desolvation step. Qhov thib ob kauj ruam yog tsim cov aerosol rau hauv gaseous molecules. Qhov no yog theem volatilization. Cov kauj ruam kawg yog dissociation thiab zus tau tej cov atomic gas, hu ua dissociation kauj ruam. Ntxiv mus, cations thiab electrons tuaj yeem tsim raws li ionization ntawm atomic gas.
Nyob rau hauv cov txheej txheem nplaim taws atomization, peb tuaj yeem siv sib xyaw ntawm cov oxidants thiab cov roj sib txawv, uas muaj txiaj ntsig zoo hauv kev ua tiav qhov kub thiab txias. Qhov no yog vim qhov kev sib cais thiab kev tawg ntawm cov molecules rau hauv cov atoms yooj yim dua nrog qhov muaj cua sov. Ntawm no, cov pa oxygen yog cov oxidant tshaj plaws. Peb tuaj yeem siv lub rotameter los saib xyuas tus nqi ntws ntawm cov oxidant thiab roj. Tsis tas li ntawd, lub rotameter yog ib lub raj vertically tapered, muaj qhov tsawg kawg nkaus tso rau hauv, thiab ntab yog nyob rau hauv lub raj.
Electrothermal Atomization yog dab tsi?
Electrochemical atomization lossis electrothermal atomization yog cov txheej txheem uas tus qauv tau dhau los ntawm peb theem thiaj li ua tiav atomization. Hauv thawj theem, tus qauv dries tawm ntawm qhov kub thiab txias. Qhov thib ob theem yog ashing ntawm cov qauv nyob rau hauv ib tug graphite rauv. Qhov thib peb theem yog qhov kub ceev nce hauv qhov cub kom ua rau lub vapor theem ntawm cov qauv; lub vapor theem muaj cov atoms los ntawm cov qauv. Peb tuaj yeem ntsuas qhov nqus tau siv cov atoms los ntawm kev tso cov qauv saum toj ntawm qhov chaw sov.
Feem ntau, lub qhov cub graphite muaj lub raj graphite uas qhib ntawm ob qho kawg. Nws muaj lub qhov nyob hauv nruab nrab, uas tuaj yeem siv los qhia cov qauv. Ntxiv mus, lub raj no yog encased nyob rau hauv graphite hluav taws xob tiv tauj ntawm ob qho kawg. Cov hluav taws xob tiv tauj no ua haujlwm kom sov cov qauv. Txawm li cas los xij, peb yuav tsum siv cov khoom siv dej kom cov graphite rauv txias. Tsis tas li ntawd, peb xav tau cov kwj sab nraud ntawm cov roj inert uas ntws ncig lub raj kom tsis txhob nkag mus rau sab nraud cua thiab rhuav tshem lub raj.
Qhov txawv ntawm nplaim Atomization thiab Electrothermal Atomization yog dab tsi?
Nplaim atomization yog cov txheej txheem kev tshuaj xyuas muaj txiaj ntsig hauv atomic absorption spectroscopy uas koom nrog kev sib xyaw ntawm nebulized gaseous oxidant nrog roj uas yog tom qab ntawd dhau mus rau hauv nplaim hluav taws kub uas tso cai rau cov qauv mus rau atomization. Electrochemical atomization, ntawm qhov tod tes, yog cov txheej txheem uas tus qauv tau dhau los ntawm peb theem thiaj li ua tiav atomization. Qhov sib txawv tseem ceeb ntawm nplaim atomization thiab electrothermal atomization yog cov nplaim atomization muaj qhov rhiab heev dua li txoj kev electrochemical atomization.
Cov hauv qab no infographic teev qhov sib txawv ntawm nplaim atomization thiab electrothermal atomization nyob rau hauv daim ntawv tabular rau ib sab sib piv
Summary – Nplaim Atomization vs Electrothermal Atomization
Qauv atomization yog ib qho tseem ceeb pib kauj ruam hauv atomic absorption spectroscopy. Nws yuav tsum tau hloov dua siab tshiab ntawm ib tug qauv mus rau nws gaseous atoms uas yuav nqus tau cov hluav taws xob. Qhov sib txawv tseem ceeb ntawm nplaim atomization thiab electrothermal atomization yog cov nplaim atomization muaj qhov rhiab heev dua li txoj kev electrochemical atomization.
