第 50 卷第 4 期Vol. 50 No. 4
2020 年 8 月Aug 2020

所属栏目:分析与测试

高效液相色谱法同时测定甘蓝中虱螨脲和顺式氯氰菊酯的残留量
邓小岚1,龚道新1,2*,王 寒1,2,熊 胜1,罗 傲1,张宸宇1 (1. 湖南农业大学 资源环境学院,湖南 长沙 410128;2. 湖南农业大学 农业环境保护研究所,湖南 长沙 410128)
摘 要:建立了高效液相色谱法同时检测甘蓝中虱螨脲和顺式氯氰菊酯残留的方法。使用乙腈提取,高效液相色谱检测,外标法定量。方法的线性范围为0.05~5.00 mg·L-1,虱螨脲相关系数为0.999 4,顺式氯氰菊酯相关系数为0.999 4。在0.05、0.10、1.00、5.00 mg·kg-1 4个添加水平下,甘蓝中虱螨脲和顺式氯氰菊酯的平均回收率分别为87.3%~101.9%和89.4%~105.2%,相对标准偏差分别为2.61%~9.16% 和3.35%~8.57%,定量限均为0.05 mg·kg-1。该方法可用于同时检测甘蓝虱螨脲和顺式氯氰菊酯的残留量。
关键词:虱螨脲;顺式氯氰菊酯;甘蓝;高效液相色谱
中图分类号:O657.7+2  文献标识码:A  文章编号:1009-9212(2020)04-0069-04
Determination of Lufenuron and Alpha-cypermethrin in Cabbage by HPLC
DENG Xiao-lan1, GONG Dao-xin1,2*, WANG Han1,2, XIONG Sheng1, LUO Ao1, ZHANG Chen-yu1 (1. College of Resource and Environment, Hunan Agricultural University, Changsha 410128, China; 2. Institute of Agricultural Environmental Protection, Hunan Agricultural University, Changsha 410128, China)
Abstract:In order to establish a high-performance liquid chromatography method for simultaneous detection of lufenuron and cypermethrin residues in cabbage. Cabbage was extracted with acetonitrile, detected by high-performance liquid chromatography, and quantified by external standard method. The linear range of the method was 0.05~5.00 mg·L-1, the correlation coefficient of lufenuron was 0.999 4, and the correlation coefficient of cis-cypermethrin was 0.999 4; under the four addition levels of 0.05, 0.10, 1.00, 5.00 mg·kg-1 louse mites in cabbage, the average recoveries of urea and alpha-cypermethrin were 87.3%~101.9% and 89.4%~105.2%, respectively, and the relative standard deviations were 2.61%~9.16% and 3.35%~8.57%; the limit of quantification was 0.05 mg· kg-1. This method can be used to detect the residues of lufenuron and alpha-cypermethrin in cabbage.
Key words:lufenuron; alpha-cypermethrin; cabbage; HPLC
作者简介:邓小岚(1994—),女,湖南衡阳人,硕士研究生,主要从事农药残留分析及其生态毒理与环境行为等方法的研究(E-mail:Shanlanzi@foxmail.com)。
联 系 人:龚道新,教授,博士,博士生导师,主要从事农药残留分析及其生态毒理与环境行为等方法的研究(E-mail:gdx4910@163.com)。
收稿日期:2020-06-03