氟虫腈 (Fipronil)是法国罗纳普朗克公司开发的苯基吡唑类新型高效广谱性杀虫剂 ,对于稻田害虫防治效果较好〔1〕。但对哺乳动物有神经毒性 ,在环境中难于分解 ,在土壤中半衰期达 1～ 3个月 ,在水中为 134d〔2〕。由于对土壤和水体的污染 ,氟虫腈在河虾养殖过程中的残留量可能? Fipronil (Fipronil) is a novel and highly efficient broad spectrum insecticide of phenylpyrazole developed by Rhône-Planck, France, which has a good effect on controlling pests in rice fields [1]. However, it is neurotoxic to mammals and is hard to be decomposed in the environment. Its half-life in soil reaches 1 to 3 months and in water is 134 days (2). Fipronil residues in shrimp culture may be due to soil and water pollution?