高效液相色谱法测定南瓜中吡虫啉等6种农药残留
2021-07-16李雪杨文娟仙米斯娅塔依甫冯悦
李雪 杨文娟 仙米斯娅?塔依甫 冯悦



摘要 [目的]建立高效液相色谱法测定南瓜中吡虫啉等6种农药残留的分析方法。[方法]样品经粉碎匀浆,乙腈提取,经C18粉和PSA粉净化处理,取上清液待测。[结果]6种农药分离效果良好,平均回收率为82.7%~107.4%;RSD为1.0%~5.6%,决定系数均不小于0.995 7。[结论]该方法可同时测定南瓜中吡虫啉等6种农药残留,具有操作简便、快捷、分析速度快、准确度高等优点。
关键词 高效液相色谱法;南瓜;农药残留;测定
中图分类号 TS-207.5+3 文献标识码 A 文章编号 0517-6611(2021)12-0202-02
doi:10.3969/j.issn.0517-6611.2021.12.053
开放科学(资源服务)标识码(OSID):
Determination of Imidacloprid and Other 6 Pesticide Residues in Pumpkin by High Performance Liquid Chromatography
LI Xue,YANG Wen juan,Xianmisiya·tayifu et al
(Institute for the Control of Agrochemicals of Xinjiang Uygur Autonomous Region, Urumqi,Xinjiang 830049)
Abstract [Objective] To establish a HPLC method for the determination of imidacloprid and other 6 pesticide residues in pumpkin. [Method] The samples were homogenized, extracted with acetonitrile, purified with C18 powder and PSA powder, and the supernatant was taken to be measured. [Result] The separation effect of six pesticides was good, with average recovery rates of 82.7%-107.4%. RSD was 1.0%-5.6%, and the determination coefficient was not less than 0.995 7.[Conclusion] This method can simultaneously determine imidacloprid and other six pesticide residues in pumpkin, and has the advantages of simple operation, rapid analysis, fast analysis speed and high accuracy.
Key words High performance liquid chromatography;Pumpkin;Pesticide residues;Determination
南瓜[Cucurbita moschata(Duch.ex Lam.)Duch.ex Poiret]別名番瓜、倭瓜、番南瓜等,为葫芦科南瓜属一年生蔓生草本植物。它含有丰富的膳食纤维和胡萝卜素,对预防和治疗便秘、缓解眼疲劳、提高视力效果良好,还能加工成南瓜浆、南瓜汁、速溶粉及各种糕点。早在2007年,我国南瓜种植面积已达32.8万hm2,总产量达到631万t,占世界总产量的30%,成为南瓜的主要生产和消费国家[1-4]。在南瓜种植过程中经常会受到马铃薯瓢虫、蚜虫、白粉虱、蔓枯病、白粉病、霜霉病等病虫害的影响,导致产量明显下降[5-9]。在防治病虫害、提高产量方面,农药起到了非常重要的作用。但是一些农药施用后不易分解,残留在南瓜上,造成南瓜质量安全隐患,成为威胁人们身体健康的隐形“杀手”,因此建立南瓜中农药残留检测方法是非常必要的[10-12]。该研究通过优化提取剂、提取方法、净化方法等,利用高效液相色谱法对南瓜中吡虫啉、啶虫脒、多菌灵、哒螨灵、苯醚甲环唑、嘧霉胺6种农药残留进行测定。……
