Determination of Thiocyanate Anion by High-Performance Liquid Chromatography with Fluorimetric Detection
Open Access
- 1 January 1996
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Analytical Toxicology
- Vol. 20 (1) , 38-42
- https://doi.org/10.1093/jat/20.1.38
Abstract
A simple and sensitive high-performance liquid chromatographic (HPLC) method was established for the trace determination of thiocyanate anion as a fluorogenic derivative. The method is based on the chemical derivatization of thiocyanate anion with 3-bromomethyl-7-methoxy-1,4-benzoxazin-2-one. The resulting derivative was separated by a Nova-Pak C18 reversed-phase column. Optimization conditions for the derivatization of thiocyanate anion were investigated by HPLC with fluorimetric detection. The linear range for the quantitation of thiocyanate anion was 1-0.05 nmol in 0.1 mL of sample; the detection limit (with a signal-to-noise ratio of 5) of a 20-µL injected aliquot was approximately 3.3 ± 1.2 fmol. Application of the method to the analysis of thiocyanate anion in saliva and plasma proved to be feasible.Keywords
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