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当前位置: 首页 > 文章 > 高效液相色谱法测定水中多杀菌素的残留量 农药 2006,45 (3) 191-193
Position: Home > Articles > Determination of spinosad residues in water by HPLC Agrochemicals 2006,45 (3) 191-193

高效液相色谱法测定水中多杀菌素的残留量

作  者：
吴春先;聂果;王广成;张忠明;陈丙坤;高立明
单  位：
四川省农药检定所
关键词：
多杀菌素;高效液相色谱;残留量
摘  要：
建立了一种测定水中多杀菌素残留量的高效液相色谱法。用二氯甲烷提取,选择性地使用固相萃取(SPE)净化,浓缩定容后测定。试验结果表明:多杀菌素在自来水中的平均回收率为90.51%￣96.38%,变异系数为3.59%￣8.72%;在河水中,采用液液分配法处理,平均回收率比在自来水中的平均回收率低,为88.13%￣91.84%,变异系数为3.49%￣7.71%;在河水中,采用液液分配加SPE净化法处理,平均回收率比前两种都低,为79.78%￣81.88%,变异系数为2.51%￣6.35%。多杀菌素在水中最低检出浓度为0.00125mg/L。
译  名：
Determination of spinosad residues in water by HPLC
作  者：
WU Chun-xian, NIE Guo, WANG Guang-cheng, ZHANG Zhong-ming,CHEN Bing-kun, GAO Li-ming(Institute for the Control of Agrochemical, Sichuan Province, Chengdu 610041, Sichuan, China)
关键词：
spinosad; HPLC; residue levels
摘  要：
An analytical method was developed for determining spinosad residues in water by high performance liquidchromatography (HPLC). Residues of spinosad in water were extracted with dichloromethane, with an optionalsample cleanup using silica solid-phase extraction (SPE). Extracts were then concentrated to a set volume and analyzed.Recovery of spinosad from tap water was 90.5-96.4%, with a coefficient of variation of 3.59-8.72%. Recovery ofspinosad from river water using liquid partitioning was lower than that from tap water, with recovery of 88.1-91.8%and a coefficient of variation of 3.49-7.71%. When using liquid partitioning coupled with SPE cleanup, recovery ofspinosad in river water was lower than the previous two methods, with recovery of 79.8-81.9% and a coefficient ofvariation of 2.51-6.35%. The lower limit of detection of spinosad in water was 0.00125 mg/L.

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