666对防治病虫效果较好,但由于它是一种稳定性化合物,脂溶性大,不易分解,残存期长,而成为污染环境危害人体健康的一个潜在因素。我国虽已停止生产,但此药目前库存量多,运输量还大,车辆污染程度较严重。据文献报道,尿中666用气相色谱电子捕获检测器具有较高的灵敏度和良好的重现性, 666 has a good effect on controlling pests and diseases, but it is a potential factor that pollutes the environment and endanger human health because it is a stable compound, fat-soluble, difficult to decompose and has long residual period. Although our country has stopped production, but the current inventory of drugs, traffic is still large, vehicle pollution is more serious. It has been reported in the literature that urinary 666 gas chromatography with electron capture detector has high sensitivity and good reproducibility,