Qhov sib txawv tseem ceeb ntawm ICP-AES thiab ICP-MS yog tias ICP-AES muab qhov kev kuaj pom ntau dua mus rau ppm lossis ppb, thaum ICP-MS muab qhov ntsuas qis qis mus rau ppt (ib feem ib trillion).
ICP-AES yog cov txheej txheem kev tshuaj xyuas uas nyob ntawm cov hauv paus ntsiab lus ntawm atomic spectroscopy rau kev txiav txim siab ntawm ntau dua 70 lub ntsiab lus nrog cov kev txwv tsis pub muaj nyob hauv chav tsev ntawm ppm (qhov ib lab) lossis ppb (ib feem ntawm ib billion). ICP-MS yog cov txheej txheem kev tshuaj ntsuam xyuas uas siv cov plasma inductively txuas rau ionize tus qauv.
ICP-AES (Inductively Coupled Plasma Atomic Emission Spectroscopy) yog dab tsi?
ICP-AES yog cov txheej txheem kev tshuaj xyuas uas nyob ntawm cov hauv paus ntsiab lus ntawm atomic spectroscopy rau kev txiav txim siab ntawm ntau dua 70 lub ntsiab lus nrog cov kev txwv tsis pub muaj nyob hauv chav tsev ntawm ppm lossis ppb. Lub sij hawm ICP-AES sawv cev rau inductively coupled plasma atomic emission spectroscopy. Nws tseem hu ua ICP-OES lossis inductively txuas nrog ntshav plasma optical emission spectrometry. Nws yog cov txheej txheem analytical muaj txiaj ntsig rau kev tshawb nrhiav cov tshuaj lom neeg.
Daim duab 01: ICP Atomic Emission Spectrometer
Cov cuab yeej no yog hom emission spectroscopy uas ua rau siv cov ntshav sib txuas ua ke rau kev tsim cov atoms thiab ions uas tuaj yeem tawm hluav taws xob hluav taws xob ntawm cov yam ntxwv wavelength qhov tseem ceeb ntawm qee lub caij. Feem ntau, cov plasma yog cov roj ionized xws li argon ntawm qhov kub thiab txias. Cov ntshav no feem ntau yog txhawb nqa thiab tswj xyuas los ntawm inductive coupling los ntawm cov hluav taws xob txias txias ntawm cov zaus siab heev.
ICP-MS (Inductively Coupled Plasma Mass Spectrometry) yog dab tsi?
ICP-MS yog cov txheej txheem kev tshuaj xyuas uas siv cov plasma inductively txuas rau ionize tus qauv. Lub sij hawm ICP-MS sawv cev rau inductively txuas nrog ntshav plasma spectrometry. Qhov ntsuas no tuaj yeem atomize tus qauv, thiab nws tuaj yeem tsim atomic thiab me me polyatomic ions uas peb tuaj yeem ntes tau. Txoj kev no muaj txiaj ntsig zoo rau nws lub peev xwm los tshawb xyuas cov hlau sib txawv thiab ntau cov nonmetals uas muaj nyob hauv cov qauv ua kua ntawm qhov tsis tshua muaj siab. Ntxiv mus, ICP-MS tuaj yeem ntes cov isotopes sib txawv ntawm tib lub caij, uas tuaj yeem ua rau nws muaj ntau yam cuab yeej rau cov txheej txheem isotopic labeling.
Daim duab 02: ICP-MS Instrument
Hauv kev sib piv rau atomic absorption spectroscopy, cov txheej txheem no qhia tau tias muaj kev nrawm dua, qhov tseeb, thiab rhiab heev. Txawm li cas los xij, tsis zoo li ntau lwm txoj hauv kev loj spectrometric, cov txheej txheem no qhia txog ntau yam cuam tshuam xws li argon los ntawm cov ntshav, cov kab mob sib kis los ntawm iav, thiab lwm yam.
Qhov txawv ntawm ICP-AES thiab ICP-MS yog dab tsi?
Ob qho ICP-AES thiab ICP-MS yog cov txheej txheem kev tshuaj xyuas tseem ceeb uas peb tuaj yeem siv los txheeb xyuas thiab txheeb xyuas cov khoom uas nyob hauv ib qho qauv. ICP-AES yog cov txheej txheem tshuaj ntsuam xyuas uas nyob ntawm cov hauv paus ntsiab lus ntawm atomic spectroscopy rau kev txiav txim siab ntawm ntau tshaj 70 lub ntsiab lus nrog cov kev txwv tsis pub muaj nyob hauv chav tsev ntawm ppm lossis ppb. ICP-MS yog cov txheej txheem tshuaj ntsuam xyuas uas siv cov ntshav sib txuas ua ke kom ionize tus qauv. Qhov sib txawv tseem ceeb ntawm ICP-AES thiab ICP-MS yog tias ICP-AES muab qhov kev kuaj pom ntau dua mus rau ppm lossis ppb, thaum ICP-MS muab qhov ntsuas qis qis qis rau ppt.
Cov ntawv qhia hauv qab no nthuav tawm qhov sib txawv ntawm ICP-AES thiab ICP-MS hauv daim ntawv teev npe rau ib sab ntawm kev sib piv.
Summary – ICP-AES vs ICP-MS
ICP-AES yog cov txheej txheem kev tshuaj xyuas uas nyob ntawm cov hauv paus ntsiab lus ntawm atomic spectroscopy rau kev txiav txim siab ntawm ntau dua 70 lub ntsiab lus nrog cov kev txwv tsis pub muaj nyob hauv chav tsev ntawm ppm lossis ppb. ICP-MS yog cov txheej txheem tshuaj ntsuam xyuas uas siv cov ntshav sib txuas ua ke kom ionize tus qauv. Qhov sib txawv tseem ceeb ntawm ICP-AES thiab ICP-MS yog tias ICP-AES muab qhov kev kuaj pom ntau dua mus rau ppm lossis ppb, thaum ICP-MS muab qhov ntsuas qis qis rau ppt.
