关键词: α-硫丹, β-硫丹, 硫丹硫酸酯, 残留, 气相色谱, 沉积物, 渔业环境, α-endosulfan, β-endosulfan, endosulfan sulfate, residue, gas chromatography, sediment, fisheries environment

Abstract: A method was developed for the determining of endosulfan and its metabolite in sediment from fisheries environment by gas chromatography. The samples were extracted with n-hexane/acetone(V/V, 1:1), sulfide were removed by copper powder, and purified on a carbon-florisil SPE column eluted with dichloromethane/n-hexane/acetone(V/V, 3:7), then analyzed by gas chromatography with electron capture detector(GC-ECD) using the external standard. The linear range of each endosulfan derivative were 0.001～0.200μg/mL (r≥0.9996). When spiked with 1μg/kg, 10μg/kg, 20μg/kg , the average recoveries ranged from 76.3% to 107% and their relative standard deviations（RSD）were between 2.31% and 11.8%. The limits of detection (LOD) of α-endosulfan, β-endosulfan and endosulfan sulfate were 0.03, 0.04, 0.05μg/kg（dry weight） respectively, while the limit of quantization (LOQ) was 1μg/kg (dry weight) for all of them. This method can be applied in the detection of endosulfan contamination in fisheries environment．