Cov xim liab cadmium yog ib chav kawm ntawm cov xim inorganic uas tsim los ua cov khoom khov ntawm cadmium sulfide (CdS) thiab cadmium selenide (CdSe). Cov ntsiab lus selenium tseeb (x) qhia txog xim, hloov qhov hue ntawm txiv kab ntxwv (Se qis) mus rau liab tob (Se siab) los ntawm kev txo qis bandgap ntawm 2.4 eV (CdS ntshiab, daj) mus rau 1.7 eV (CdSe ntshiab, liab).
Kev txheeb xyuas cov xim hauv kev kos duab yog qhov nyuaj vim muaj qhov sib txawv ntawm selenium thiab cadmium, lub cev lub cev, thiab cov xim sib xws ntawm lwm cov xim liab. Kev lom ntawm cov xim selenium thiab cov hlau hnyav ua rau muaj kev tshuaj xyuas nruj heev. Kev tshuaj xyuas cov xim kom raug txhawb nqa kev ua raws li txoj cai, kev nyab xeeb, thiab kev ua tiav ntawm daim ntawv lo.
Cov xim liab Cadmium
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Cov Ntsiab Cai ntawm XRF Spectroscopy rau Kev Tshuaj Xyuas Xim
Kev siv X-ray fluorescence (XRF) spectroscopy ua rau cov atoms hauv cov xim liab cadmium zoo siab siv cov X-rays thawj zaug, thiab tso cov electrons sab hauv tawm. Lub atom so los ntawm kev tso cov X-rays thib ob (fluorescent) uas lub zog yog cov khoom tshwj xeeb. Rau cov txheej txheem tshuaj xyuas cov xim, selenium's Kα thiab Kβ peaks tshwm sim ntawm 11.2 thiab 12.5 keV, feem; cadmium tshwm sim ntawm 23.1 keV. XRF ua rau muaj kev tshuaj xyuas cov xim ntawm cov khoom khov yam tsis ua rau cov qauv puas tsuaj. XRF muab ob qho tib si kev txheeb xyuas cov xim zoo thiab ntau, ntes cov ntsiab lus ntawm cov xim selenium mus rau qhov ib feem ntawm ib lab hauv cov matrices qhuav. Kev ntes tshwm sim hauv vib nas this, ua rau muaj kev kos duab ntawm cov txheej xim nyuaj hauv kev txuag kos duab lossis kev lees paub zoo.
Cov Txiaj Ntsig Tseem Ceeb of XRF Spectroscopy inPigment CompositionAnalysis
XRF phim cov kev cai tsis ua puas tsuaj rau kev siv cov xim liab cadmium, zam kev kuaj me me uas xav tau los ntawm cov txheej txheem xws li ICP-OES lossis AAS. Piv rau cov txheej txheem txheeb xyuas cov xim puas tsuaj, XRF khaws cov qauv keeb kwm thiab niaj hnub, txhawb nqa cov txheej txheem txheeb xyuas cov xim rau kev tshuaj xyuas kev cai lossis kev ntsuam xyuas kev nyab xeeb ntawm cov xim. XRF ua haujlwm tau zoo nrog cov khaubncaws sab nraud povtseg, cov xim hmoov, thiab cov khoom tsis muaj qhov puas tsuaj, ua rau muaj kev tshuaj xyuas cov xim meej thiab taug qab cov tshuaj lom ntawm cov xim selenium hauv ntau yam haujlwm thiab cov khoom lag luam.
Kev Ntsuam Xyuas Zoo thiab Ntau ntawm Selenium hauv Cadmium Liab Pigments
XRF ua rau muaj kev txheeb xyuas ncaj qha ntawm selenium hauv cov xim liab cadmium los ntawm kev ntes cov selenium Kα (11.2 keV) thiab Kβ (12.5 keV) peaks. Qhov muaj ob kab cadmium Kα (23.1 keV) thiab selenium Kα lees paub tias cov xim muaj cov qauv cadmium sulfo-selenide.
Kev ntsuas ntiv tes XRF spectrum sib txawv cov xim liab cadmium los ntawm cov xim daj cadmium sulfide ntshiab lossis lwm cov xim liab uas tsis muaj selenium. Rau cov khoom sib xyaw lossis kev hloov pauv, cov txheej txheem puv spectrum thiab kev tshuaj xyuas chemometric (piv txwv li, kev tshuaj xyuas cov khoom tseem ceeb) txhim kho kev sib cais, txo qis qhov tsis tseeb thaum txheeb xyuas cov xim hauv cov khoom kos duab lossis cov khoom lag luam.
Lonnmeter XRFSeleniumCov Lus Qhia Tseem Ceeb ntawm Analyzer
Cov khoom siv ntsuas XRF ntawm Lonnmeter ntes tau cadmium, selenium, thiab lwm yam hlau xim tseem ceeb hauv cov qauv khoom khov, hmoov, thiab cov qauv xim pleev xim. Lub sijhawm tshuaj xyuas yog txij li 30 vib nas this mus txog70vib nas this. Kev daws teeb meem siab spectral thiab kev ntsuas qib siab ua rau muaj qhov tseeb ntawm kev ntsuas cov xim thiab kev kuaj xyuas kev ua raws li kev siv cov xim liab cadmium thiab cov xim selenium. Lub touchscreen interface txhawb nqa cov txheej txheem txheeb xyuas cov xim nrog cov hom kev npaj ua ntej, cov zaub spectrum nyob, thiab cov ntawv qhia kev xeem customizable. Cov ntaub ntawv tuaj yeem xa tawm ntawm USB lossis Wi-Fi. Kev tuav cov qauv lees txais cov hmoov nias, cov khoom sib xws, lossis cov txheej xim; kev npaj qauv puas tsuaj tsis tas yuav tsum tau ua. Kev sib txuas lus sab hauv kev nyab xeeb hluav taws xob thiab kev tsim qauv me me (<2 kg tes tuav) ua kom muaj kev nyab xeeb thiab ua haujlwm tau zoo.
Silicon drift detectorof Lonnmeter's XRF analyzer txhawb nqa cov txheej txheem tshuaj ntsuam xyuas cov xim sai thiab meej nrog kev ua kom rov ua dua. Cov yam ntxwv ntawm interface suav nrog kev tshuaj xyuas spectrum thiab cov txheej txheem txheeb xyuas cov xim uas muaj cov qauv sib xws nrog kev kos duab, kev tsim khoom, thiab kev tshawb fawb.
Thov Ib Daim Ntawv Qhia Txog Tus Nqi thiab Cov Kauj Ruam Tom Ntej
Lub platform no kho cov lus qhia raws li cov kev cai tshwj xeeb ntawm daim ntawv thov, suav nrog kev siv cov xim liab cadmium, kev lom ntawm cov xim selenium, thiab cov txheej txheem tshuaj ntsuam xim. Cov kev pab tswv yim qhia cov kev xaiv kho kom haum rau cov txheej txheem xim nyuaj lossis ua raws li cov cai kev nyab xeeb ntawm cov xim. Txhua qhov kev teeb tsa suav nrog cov kev xaiv tuav cov qauv sib xws nrog cov hmoov, cov pellets nias, thiab cov khoom pleev xim.
Kev cob qhia txog kev npaj cov qauv, kev xaiv cov ntaub ntawv pov thawj, thiab cov txheej txheem ua haujlwm rau cov txheej txheem txheeb xyuas cov xim. Kev txhawb nqa tas mus li suav nrog kev kho dua tshiab ntawm cov cuab yeej rau kev tshuaj xyuas cov xim, kev daws teeb meem rau cov teeb liab qis lossis suab nrov siab, thiab cov txheej txheem kev nyab xeeb rau kev siv cov xim cadmium thiab selenium.
Cov Lus Nug Feem Ntau
Cov xim liab cadmium yog dab tsi thiab selenium koom nrog nws li cas?
Cov xim liab cadmium yog cadmium sulfoselenide, uas muaj cadmiumsulfidethiab 10–25% cadmium selenide. Selenium ions nyob hauv cov chaw lattice, ua rau muaj ntau yam xim los ntawm txiv kab ntxwv mus rau liab tob los ntawm kev hloov pauv CdS:CdSe piv. Lub matrix crystalline ua kom muaj zog thiab ruaj khov. Selenium txhim kho cov xim ci ntsa iab thiab ua kom cov xim ruaj khov, tseem ceeb rau cov xim pleev xim tas mus li, tsis yooj yim tawg thiab cov ntaub ntawv lag luam.
XRF spectroscopy pab tau li cas rau kev txheeb xyuas cov xim?
XRF spectroscopy ntes tau cadmium thiab selenium ncaj qha rau hauv cov khoom tawv pigment matrices rau kev tshuaj xyuas cov tshuaj pigment uas tsis ua rau puas tsuaj. Cov ncov ntawm cov khoom, suav nrog cadmium Kα (23.2 keV) thiab selenium Kα (11.2 keV), tso cai rau kev txheeb xyuas sai ntawm cov xim muaj pes tsawg leeg. Txoj kev no sib txawv cov xim selenium ntawm lwm hom, nrog rau qhov txwv kev ntes qis dua 50 ppm nyob ntawm cov qauv matrix thiab cov qauv geometry.
Vim li cas kev kuaj pom cov ntsiab lus selenium hauv cov xim thiaj li tseem ceeb?
Kev sau cov ntaub ntawv txog cov selenium yog qhov yuav tsum tau ua rau muaj kev nyab xeeb ntawm cov xim, kev sib xws ntawm cov khoom tsim tawm, thiab kev ua raws li cov cai thoob ntiaj teb txog kev raug ib puag ncig thiab cov neeg ua haujlwm. Cov selenium ntau dhau ua rau muaj kev pheej hmoo ntawm cov xim lom thiab cuam tshuam rau kev rov ua dua xim. Cov qauv xim selenium uas tswj tau ua kom ntseeg tau tias muaj kev ua raws li cov cai thiab kev ua tau zoo tshaj plaws ntawm cov xim hauv kev kos duab,cov tshuaj pleev xim, thiab cov yas.
Lub sijhawm tshaj tawm: Lub Peb Hlis-09-2026
