A preconcentration procedure has been developed which at one and the same time raises the concentration of the two groups of elements, AS, Au, Cu, Os, Pb, Pd, Pt and Rh and As, Sb, Se, So, To and T1, in many natural materials above the detection limits of the spark-source mass spectrometric technique and separates them from interfering matrix elements. The technique involves the cementation of the elements from solution on amalgamated aluminium powder which can be pelleted directly to form the electrode for spark source mass spectrometric analysis. Through the use of wet oxidative digestions and oxygen flaskcombustion oxidation procedures in conjunction with the cementation procedure the above elements have been determined in a number of biological, geological and environmental samples.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:291500 |
| Date | January 1981 |
| Creators | Welch, K. H. |
| Publisher | University of Aberdeen |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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