School of Applied Science, University of Science and Technology Beijing, 100083 Beijing, China.
Bull Environ Contam Toxicol. 2009 Dec;83(6):803-7. doi: 10.1007/s00128-009-9831-4.
JS-118 is a diacylhydrazines-type insect growth regulator used extensively in China now. An analytical method for residues determination of JS-118 in cabbage and soil samples by high performance liquid chromatography with DAD detection was established and optimized. Primary secondary amine solid phase extraction cartridge was used for sample preparation. Mean recoveries for the analyte ranged from 96.6% to 107.0% with CV value less than 4.7%. The limit of quantification is 0.01 mg/kg. Direct confirmation of JS-118 residues in samples was realized by high performance liquid chromatography-mass spectrometry. The proposed method is simple, rapid and reliable to perform and could be utilized for monitoring of pesticides residues.
JS-118 是一种在中国广泛使用的二酰肼类昆虫生长调节剂。本文建立并优化了高效液相色谱-二极管阵列检测法测定甘蓝和土壤中 JS-118 残留量的分析方法。采用伯仲胺固相萃取柱进行样品前处理。该分析物的平均回收率为 96.6%~107.0%，CV 值小于 4.7%。定量限为 0.01mg/kg。采用高效液相色谱-质谱法可直接确证样品中 JS-118 的残留。该方法简单、快速、可靠，可用于农药残留监测。
