The components were comprehensively assayed by 1H NMR, ICP _ AES and elemental analysis.They proved to be a pesticide of thiocyclam and its by _ product.

• 通过采用综合分析,将可疑成分提取、分离、柱色谱纯化,结合NMR、ICP_AES和元素分析,确证了汤样中的致毒物质是沙蚕毒素类农药“杀虫环”。