Determination of nine triazole pesticides in environmental waters using solid phase extraction and gas chromatography-mass spectrometry

A method was developed for the simultaneous determination of 9 triazole pesticides in environmental water using C18 cartridge for the extraction and enrichment, NH, cartridge for the clean-up and gas chromatography-mass spectrometry for the detection. The linear range of calibration curves for the 9 target pesticides was between 0. 025 mg/L and 0. 500 mg/L. The detection limits were in the range of 0. 002 - 0. 009 mu g/L. The 9 target pesticides were measured in river water and sea water at 0. 025 mu g/L and 0. 100 mu g/L spiking levels, recoveries and relative standard deviations ( RSD n = 3) were 68. 4% - 113. 9% and 1. 6% - 6. 9% for river water and 70. 3% - 115. 2% and 0. 8% - 8. 2% for sea water, respectively. The method is simple sensitive selective and suitable for the qualification of pesticide multiresidue analysis. It has been successfully applied to the survey of 9 triazole pesticide residues in Jiulong River Estuary, Fujian.