This thesis is initially concerned with the determination of trace amounts of a number of metals in aluminium salts, Various continuous sources are then examined and finally multi-element electrodeless discharge tubes are investigated as excitation sources in atomic-fluorescence spectroscopy. The determination of trace amounts of calcium and magnesium in solutions containing large concentrations of aluminium salts may be accomplished by co-precipitating their hydroxides on iron(III) hydroxide, dissolving the precipitate, and extracting the 8-hydroxyquinolates of calcium and magnesium into methyl isobutyl ketone at about pH 110 The extract may be sprayed into the air-propane flame and atomic-absorption measurements made. Iron and nickel may be co-precipitated on hydrated manganese(IV) oxide and their 8-hydroxyquinolates extracted at pH 4.5. Chromium may be extracted directly into methyl isobutyl ketone. A number of continuous sources are investigated and compared with line sources for the atomic-absorption of silver. 3 The atomic-fluorescence of selenium, tellurium, bismuth and mercury; cadmium and zinc; and indium and gallium is examined using multi-element electrodeless discharge tubes of these metals.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:623086 |
| Date | January 1968 |
| Creators | Marshall, Geoffrey Boyd |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10044/1/15973 |
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