Journal
TALANTA
Volume 80, Issue 2, Pages 1039-1043Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2009.08.017
Keywords
ICP-MS; Fuel analysis; Direct injection; Heated spray chamber
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Reasons for signal suppression during the analysis of light petroleum matrices by inductively coupled plasma mass spectrometry (ICP MS) were examined. A decrease of the ionization efficiency of the plasma was found to be the principal factor responsible for this loss of sensitivity. Consequently, an interface based on a total consumption micronebulizer and a heated spray chamber was constructed to alleviate this problem. A method based on flow-injection ICP MS using this interface was developed for the direct multielement analysis of undiluted fuels (gasoline, kerosene) and gas condensates offering an increase in sensitivity by at least a factor of 3-4 in comparison with the existing setups. (C) 2009 Elsevier B.V. All rights reserved.
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