The hot, reducing nitrous oxide-acetylene flame has been applied to atomic absorption spectroscopy. Molybdenum in aqueous solution and steel sample solutions has been determined in such a flame. This has led to the indirect, sequential analyses of micro- gram amounts of both phosphorus and silicon by formation and extraction of their heteropolymolybdates into organic solvents followed by analysis of the molybdenum content by atomic absorption spectroscopy. Niobium and titanium have also been determined in a similar manner and the stoichiometry of their ternary heteropoly acids has been investigated. The selectivity of certain organic solvents in extracting phosphomolybdic acid has led to the titrimetric determination of microgram amounts of phosphate being re-examined. Microgram amounts of orthophosphate have also been determined by an indirect complexometric procedure.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:623130 |
| Date | January 1968 |
| Creators | Smith, Alan Malcolm |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10044/1/16088 |
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