Thiocyanate and nitrite analysis using miniaturised isotachophoresis on a planar polymer chip

Prest, Jeff E. and Baldock, Sara J. and Beardah, Matthew S. and Doyle, Sean P. and Fielden, Peter R. and Goddard, Nicholas J. and Brown, Bernard J. Treves (2011) Thiocyanate and nitrite analysis using miniaturised isotachophoresis on a planar polymer chip. Analyst, 136 (15). pp. 3170-3176. ISSN 0003-2654

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Abstract

A new method has been developed to improve the determination of thiocyanate using isotachophoresis. This method uses complexation with copper(II) as a mechanism for improving the separation of thiocyanate from chlorate and perchlorate. By using a pH of 3.25 the method can also be used to analyse nitrite. Separations were carried out using a miniaturised poly(methyl methacrylate) (PMMA) separation device. Linearity was observed from 1.25 to 75 mg dm−3 with a correlation coefficient of 0.998 for both thiocyanate and nitrite. Limits of detection for these two species were calculated to be 0.8 mg dm−3 and 0.9 mg dm−3 respectively. The method was successfully applied to the analysis of these anions in a range of samples including explosive residues.

Item Type:
Journal Article
Journal or Publication Title:
Analyst
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1603
Subjects:
ID Code:
77400
Deposited By:
Deposited On:
21 Dec 2015 12:22
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Aug 2020 04:35