Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 41, Issue -, Pages 105-121Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2012.09.002
Keywords
Analytical figure of merit; Analytical performance; Direct-current, atmospheric-pressure, glow discharge (dc-APGD); Electrolyte solution; Elemental analysis; Liquid cathode; Mass spectrometry (MS); Optical emission spectrometry (OES); Spectrochemical analysis; Trace analysis
Categories
Funding
- Polish Ministry of Science and Higher Education
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Direct-current, atmospheric-pressure, glow discharge (dc-APGD) generated in contact with flowing sample solutions is a new, very promising excitation source for analytical optical emission spectrometry, due to its low maintenance requirements and its analytical performance. Since analyzed solutions act as liquid cathodes, this discharge system is useful for the direct determination of elements dissolved in solutions without having to produce their aerosols by pneumatic nebulization. The review presents different systems and designs of dc-APGD generated with the liquid cathode applied to spectrochemical analysis in the past 20 years. We discuss the effect of experimental conditions on analytical response and performance of the discharge. We include analytical figures of merit obtained with different discharge systems and their application to the analysis of environmental and biological samples containing various trace elements. (C) 2012 Elsevier Ltd. All rights reserved.
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