2006 Volume 12 Issue 3 Pages 171-175
Two methods of simultaneous determination of eight pesticides (azoxystrobin, cyproconazole, flazasulfuron, halosulfuron-methyl, propiconazole, siduron, tetraconazole and triflumizole) in effluent from golf courses by solid phase extraction and GC/MS or HPLC/UV were developed. A water sample containing the pesticides was passed through a solid phase extraction device of a disk of styrene divinyl benzene (SDB) polymer with a vacuum system, and the pesticides retained on the disk were eluted with acetone or acetonitrile. The pesticides in the elute were determined by GC/MS or HPLC/UV. The recoveries for the pesticides spiked to distilled water and river water were 90.0∼102% and 81.3∼101%, and their relative standard deviations were 0.8∼7.3% and 1.2∼7.3%, respectively. The retention behavior of the pesticides onto the material of solid phase extraction was discussed in terms of the octanol-water partition constant (Pow). It was considered that the hydrophobicity was a principal parameter for the retention of the pesticides in this system. These methods were applied to effluent from golf courses. Halosulfuron-methyl and siduron were detected by the proposed method.
