高效液相色谱法测定番茄中甲氧虫酰肼的残留

2021-12-18 16:40:01迟梦宇陈子雷毛江胜卢琦张艳李慧冬
安徽农业科学 2021年23期

迟梦宇 陈子雷 毛江胜 卢琦 张艳 李慧冬

摘要 [目的]建立测定甲氧虫酰肼在番茄上残留的高效液相色谱检测方法。[方法]样品经过酸化的甲醇高速匀浆提取,经过二氯甲烷萃取,采用甲醇∶乙腈∶水(30∶55∶15,V/V)为流动相,利用symmetry C18柱(4.0 mm×250 mm)进行检测。[结果]在0.01、0.50、2.00 mg/kg 3个添加浓度水平下,甲氧虫酰肼在番茄上的回收率为85%~105%,相对标准偏差(RSD)为0.6%~1.4%。相关系数(r)为0.999 8。甲氧虫酰肼在番茄上的最低检出限为0.01 mg/kg,最小检出量为2 ng。在实际样品检测中检测出有甲氧虫酰肼的残留,但均未超过我国规定的最大残留限量值。[结论]在实际样品检测中,该方法能够快速、准确地对样品进行检测,为大量样品的检测提供了数据方法。

关键词 高效液相色谱法;甲氧虫酰肼;番茄;农药残留

中图分类号 TS 207.5+3  文献标识码 A

文章编号 0517-6611(2021)23-0201-02

doi:10.3969/j.issn.0517-6611.2021.23.056

Determination

of Methoxyfenozide Residues on Tomatoes by High Performance Liquid Chromatography

CHI Meng-yu1,2,3,CHEN Zi-lei1,2,3,MAO Jiang-sheng1,2,3 et al (1.Institute of Quality Standards & Testing Technology for Agro-Products of Shandong Academy of Agricultural Sciences,Jinan,Shandong 251000;2.Shandong Key Laboratory of Testing Technology for Food Quality & Security,Jinan,Shandong 251000;3.Monitor Inspection &Test Center of Foods Quality of Ministry of Agricultural and Rural Affairs (Jinan),Jinan,Shandong 251000)

Abstract [Objective] To establish a high performance liquid chromatography (HPLC) for the determination of methoxenozide residues on tomatoes.[Method]Methanol:acetonitrile:water (30∶55∶15,V/V) was used as the mobile phase,and a symmetry C18 column (4.0 mm×250 mm) was used for detection.[Result]At three additive concentration levels of 0.01,0.50,and 2.00 mg/kg,the recovery of methoxenozide on tomatoes was 85%-105%,and the relative standard deviation (RSD) was 0.6%-1.4%.The correlation coefficient (r) was 0.999 8.The minimum detection limit of methoxenozide on tomatoes was 0.01 mg/kg,and the minimum detection amount was 2 ng.The methoxenozide residues were detected in the actual samples,but none of them exceeded the maximum residue limit value stipulated by China.[Conclusion]In actual sample detection,this method could quickly and accurately detect samples,providing a data method for the detection of a large number of samples.

Key words High performance liquid chromatography (HPLC);Methoxyfenozide;Tomato;Pesticide residue

基金項目

山东省农业重大应用技术创新项目(KY-NYZDJSCX2016)。

作者简介 迟梦宇(1993—),女,山东青岛人,硕士,从事农产品中农药残留检测技术研究。通信作者,副研究员,从事农药残留限量标准与检测技术研究。

收稿日期 2021-04-16

甲氧虫酰肼是由美国陶氏益农公司研发的一种新型的双酰肼类昆虫生长调节剂,它不但能够导致昆虫异常蜕皮抑制进食,而且还有一定的杀卵活性[1-3],对鳞翅目害虫具有很好的防治作用。目前对甲氧虫酰肼的残留研究国内外均有报道[4-9],但是在番茄上的残留研究目前国内还鲜有报道。笔者以番茄为样品,建立了测定甲氧虫酰肼在番茄中残留量的液相色谱检测法,为快速、准确地测定番茄中甲氧虫酰肼残留提供了有效的数据方法,满足了农药残留的要求。……

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