期刊
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
卷 370, 期 8, 页码 1091-1095出版社
SPRINGER
DOI: 10.1007/s002160100915
关键词
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A PVC membrane electrode based on a cadmium-salen (N,N'-bis-salicylidene-1,2ethylenediamine) complex as an anion carrier is described. The electrode has an anti-Hofmeister selectivity sequence with a preference for thiocyanate at pH 1.5-11.0. It has a linear response to thiocyanate from 1.0 x 10(-6) to 1.0 x 10(-1) mol L-1 with a slope of 59.1 +/- 0.2 mV per decade. and a detection limit of 7 x 10(-1) mol L-1. This electrode has high selectivity for thiocyanate relative to many common organic and inorganic anions, The proposed sensor has a fast response time of approximately 15 s. It was applied to the determination of thiocyanate in a milk sample.
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