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.
No takes yet. Share an insight, caveat, or question.
Nielen et al. (1985) studied this question.