Determination of a metabolite of the herbicide pyridate in drinking and groundwater using high-performance liquid chromatography with amperometric detection.
A Pachinger, E Eisner, H Begutter, H Klus
Index: J. Chromatogr. A. 558(2) , 369-73, (1991)
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Abstract
The main metabolite of the herbicide pyridate is 3-phenyl-4-hydroxy-6-chlorpyridazine (CL9673). A high-performance liquid chromatographic method with amperometric detection is described for determining CL9673 at residue levels in water samples. Sample preconcentration is performed by passage through a C18 extraction cartridge. A recovery study using tap water samples spiked with CL9673 at a concentration of 0.1 micrograms/l showed a recovery of 84.8% (coefficient of variation 6.2%). The method is suitable for the determination of CL9673 in drinking and groundwater.
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