In situ removal of contamination from a palladium-magnesium chemical modifier within an electrothermal atomiser for the determination of cadmium in serum
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Analytical Atomic Spectrometry
- Vol. 5 (3) , 203-204
- https://doi.org/10.1039/ja9900500203
Abstract
For the determination of cadmium in body fluids with electrothermal atomisation atomic absorption spectrometry, a method for the removal of cadmium contamination from a Pd-Mg chemical modifier has been devloped. The modifier was injected on to the platform and the cadmium removed by pre-heating to 1100 °C. After cooling, the sample aliquot was placed on the platform and an atomisation programme for cadmium was applied. The pre-treated Pd-Mg modifier retains the cadmium within the atomiser up to 800 °C. Air ashing was used to prevent the accumulation of carbonaceous residues, and the advantage of cooling to 20 °C prior to atomisation was demonstrated.Keywords
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