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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Trace analysis of platinum in biological samples: A comparison between sector field ICP-MS and adsorptive cathodic stripping voltammetry following different digestion procedures
Analytica Chimica Acta, Volume 439, No. 2, Year 2001
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Description
A study was carried out to analyse Pt trace levels in fish liver and mussel soft tissue, using two different analytical techniques. Sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) combined with microwave digestion was compared with adsorptive cathodic stripping voltammetry (ACSV) following high pressure ashing (HPA). A microwave digestion procedure for animal tissue was developed, using HNO3 and H2O2. The procedural detection limit of Pt with SF-ICP-MS in combination with this digestion procedure was 2.4 ng/l in the solution. The subsequent detection limit considering 300 mg liver tissue (wet weight) was found to be 200 pg/g Pt. In comparison, the detection power of ACSV after HPA digestion was about 20 times more sensitive. The higher procedural detection limit of the ICP-MS-based method is due to the high dilution necessary to reduce acid concentration. Nevertheless, the results of both analytical methods differed between 16 and 30% for Pt concentrations below 1 ng/g, and were almost identical (2-10% deviation) above this value. The Pt levels in the animal tissues analysed ranged between 0.1 and 2.3 ng/g. © 2001 Elsevier Science B.V.
Authors & Co-Authors
Zimmermann, Sonja
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Berner, Zsolt Attila
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Taraschewski, Horst F.
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Sures, Bernd
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Statistics
Citations: 109
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/S0003-2670(01)01041-8
ISSN:
00032670