Studies on the determination of cadmium in blood by furnace atomic non-thermal excitation spectrometry
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 111 (3) , 285-290
- https://doi.org/10.1039/an9861100285
Abstract
Cadmium atomic emission can be detected in a FANES low-pressure Ar discharge at atomiser temperatures as low as 140 deg;C when the analyte is present as CdCl2. Cadmium chloride molecules vaporised at this temperature are dissociated by electron impact in the discharge, giving a substantial Cd atom concentration before thermal dissociation of the molecules becomes feasible. This results in a 100-fold greater tolerance towards chloride matrix chemical interferences than encountered for Cd in ETA-AAS with tube-wall atomisation. However, the determination of cadmium in deproteinised whole blood by FANES is not totally interference free and a standard additions procedure is required to give an accurate determination. The FANES instrument detection limit for Cd was calculated to be 0.04 µg l–1. For the deproteinisation procedure applied, the detection limit for cadmium in whole blood was 0.2 µg l–1.Keywords
This publication has 0 references indexed in Scilit: