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Original Articles

Electrochemical Detection of Phenylurea Herbicides in Liquid Chromatography

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Pages 315-332 | Published online: 05 Dec 2006
 

Abstract

This paper describes the electrochemical detection of ten phenylurea herbicides after on-line trace enrichment on a small C18 precolumn and liquid chromatography on a C18 analytical column. The method presented shows sub-ppb sensitivity in surface water samples without extensive sample pretreatment. Electrode contamination occurs but does not seriously interfere in the routine analysis of such samples. Selective determination (at 1. 0 V) of metoxuron in the presence of other phenylureas allows the detection of 30 ppt of the herbicide in surface water.

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