Pentafluorobenzyl p-toluenesulphonate as a new derivatizing reagent for electron-capture gas chromatographic determination of trace inorganic anions

Inorganic anions in water were reacted with pentafluorobenzyl p-toluenesulphonate in dichloromethane, using tetra- n-amylammonium chloride as a phase-transfer catalyst. Bromide, iodide, thiocynate and nitrate at relatively low concentrations can be pentafluorbenzylated, and the resulting derivatives...

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Bibliographic Details
Published in:Journal of Chromatography A 1986, Vol.354, p.259-267
Main Authors: Funazo, Koichi, Tanaka, Minoru, Morita, Kazuhiro, Kamino, Mitsuo, Shono, Toshiyuki
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
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Summary:Inorganic anions in water were reacted with pentafluorobenzyl p-toluenesulphonate in dichloromethane, using tetra- n-amylammonium chloride as a phase-transfer catalyst. Bromide, iodide, thiocynate and nitrate at relatively low concentrations can be pentafluorbenzylated, and the resulting derivatives can be detected by electron -capture gas chromatography. The interferences of some anions were examined. The recovery test of bromide, iodide or thiocynate spikes and an intercomparison study for nitrite were performed. This gas chromatographic method has been successfully applied to the determination of bromide and iodide in kelp extract, and thiocyanate and/or nitrate in human urine or saliva.
ISSN:0021-9673
DOI:10.1016/S0021-9673(01)87027-8