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Title: Some practical studies with flames used in analytical atomic spectroscopy
Author: Ranson, Leslie
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1972
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The modification of the Beckman Laminar Flow Burner to facilitate separation of both the air-acetylene and the nitrous oxide-acetylene flame by inert gas shielding is described. The modified burners were employed for the determination of arsenic, selenium, lead, tellurium, zinc, vanadium, molybdenum and titanium. The stability of separated flames is discussed and methods of flame stabilisation are described. A burner was designed and constructed which enables the sample to be aspirated into the flame without passing through the Primary reaction cones. The use of the nitrous oxide-acetylene flame for the determination of arsenic and selenium by atomic absorpUon spectrophotometry was investigated. The use of both single pass and triple pass optics was evaluated. Boron was determined by flame emission spectroscopy employing an oxygen sheathed nitrogen-hydrogen flame. The Technicon A.F.S.6 spectrophotometer and the Technicon Autoanalyser were used in this investigation. They were also employed in the simultaneous determination of six elements by atomic fluorescence spectroscopy, after an automatic solvent extraction procedure.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available