The Direct Determination of Cadmium in Blood by Electrothermal Atomization with the Graphite Platform
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Determination of Cadmium in Environmental Sample by Electrochemical Hydride Generation Electrothermal Atomic Absorption with in Situ Trapping in Graphite Tube Atomizer
A homemade batch electrolytic cell with a Sn-Pb alloy cathode used to generate cadmium hydride. Several parameters influencing the electrochemical hydride generation and trapping on the coated graphite tubes, and atomization process have been investigated. Ir-, W-, and Zrcoated graphite tubes were used for trapping cadmium hydride. It was found that Ir-coated graphite provided the best sensitiv...
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A combined electrodeposition-ETAAS technique has been applied to the analysis of Pb, Cd, Co, Ni, Cr and Mn in biological samples in order to overcome interferences and to minimize sample pretreatment. It requires minimal sample preparation with the electrolysis process aiding partial decomposition of the organic matrix, adequate for the release and deposition of trace elements. In an initia...
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Permanent modifiers (Zr, W, Ru, Zr–Ru and Zr–W) thermally deposited on platforms inserted in pyrolytic graphite tubes and Pd 1 Mg(NO3)2 conventional modifier mixture have been employed for the determination of cadmium and lead in dissolved environmental, botanic and biological samples by electrothermal atomic absorption spectrometry (ETAAS). Optimum masses and mass ratios of permanent modifiers...
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Direct measurement of lead and cadmium in blood and urine by electrothermal atomic absorption spectrometry with deuterium background correction (D2-AAS) is prone to severe matrix and spectral interferences. We overcame these effects by coating the L'vov platform with ammonium molybdate, reducing the atomization time, introducing a post-atomization cooling step, carefully selecting ashing and at...
متن کاملDetermination of cadmium in wine by electrothermal atomic absorption spectrometry.
A method is described for direct electrothermal atomic absorption spectrometric (ETAAS) determination of cadmium in untreated samples of wine. Pyrolytic graphite tubes and graphite tubes with standard L'vov pyrolytic platforms were tested as atomizers. The detection limit achieved was 0.08 microg L(-1) Cd in wine. The relative standard deviation for the concentration range from 0.2 to 10 microg...
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تاریخ انتشار 2010