Separation and enrichment of palladium and gold in biological and environmental samples, adapted to the determination by total reflection X-ray fluorescence
- 22 February 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 125 (3) , 397-399
- https://doi.org/10.1039/b000471p
Abstract
The reductive co-precipitation of trace and ultra-trace elements together with mercury followed by complete evaporation of the mercury makes it possible to determine palladium and gold by total reflection X-ray fluorescence. Both elements can be detected without interferences at optimal sensitivity in the pg range. Thus, detection limits of, e.g., 2.5 ng L−1 for palladium and 2.0 ng L−1 for gold, in urine, were obtained. The precision was determined to 0.04 at a palladium concentration of about 200 ng L−1 urine and to 0.19 at a gold concentration of only 18 ng L−1. The recovery for a urine sample spiked with known amounts of palladium and gold amounted to >95%. Results of the combined procedure are given for the determination of palladium and gold in the urine of non-exposed and occupationally exposed persons and in some other environmentally relevant samples.Keywords
This publication has 0 references indexed in Scilit: