浙江农业科学 ›› 2026, Vol. 67 ›› Issue (10): 2489-2493.DOI: 10.16178/j.issn.0528-9017.20260161

• 植保技术 • 上一篇    下一篇

唑螨酯在枸杞中的残留消解和最终残留分析

张亮(), 付岩, 王全胜, 凌淑萍, 吕燕   

  1. 宁波市农业科学研究院 宁波市特色农产品质量安全检测与控制重点实验室,浙江 宁波 315040
  • 收稿日期:2026-03-11 出版日期:2026-10-11 发布日期:2026-10-19
  • 作者简介:张亮,主要从事农产品质量与安全研究。E-mail:zl8755251@163.com。
  • 基金资助:
    宁波市“科创甬江2035”重点研发计划项目(2025Z102)

Residue degradation and terminal residue analysis of fenpyroximate in wolfberry

ZHANG Liang(), FU Yan, WANG Quansheng, LING Shuping, LYU Yan   

  1. Ningbo Key Laboratory of Testing and Control for Characteristic Agro-product Quality and Safety,Ningbo Academy of Agricultural Sciences,Ningbo 315040,Zhejiang
  • Received:2026-03-11 Online:2026-10-11 Published:2026-10-19

摘要:

为建立枸杞中唑螨酯残留的分析方法,研究唑螨酯在枸杞中的残留行为,本试验样品中唑螨酯用乙腈提取、超高效液相色谱-串联质谱仪检测、基质匹配外标法定量。结果显示,在0.000 2~0.040 0 mg·L-1范围内呈良好线性关系;在0.01、0.50、和2.00 mg·kg-1添加水平下,干枸杞和鲜枸杞中的平均回收率为78%~105%,相对标准偏差最大为9.4%,定量限均为0.010 mg·kg-1。消解试验表明,唑螨酯在宁夏银川、山西太原两地鲜枸杞中降解迅速,无法拟合消解曲线,在干枸杞中的半衰期分别为3.9和4.3 d,属于易降解农药。在推荐的施药条件下,采收间隔为7 d的鲜枸杞和干枸杞中唑螨酯残留量分别为<0.010 mg·kg-1和<0.010~0.045 mg·kg-1,最大残留量均小于我国规定的最大残留限量,因此推荐安全间隔期为7 d。

关键词: 枸杞, 唑螨酯, 残留, 消解动态

Abstract:

To establish an analytical method for the residue of fenpyroximate in wolfberry and to study the residue behavior of fenpyroximate in wolfberry,the samples were extracted with acetonitrile,detected by ultra-performance liquid chromatography-tandem mass spectrometry,and quantified by the matrix-matched external standard method. The results showed that good linearity was achieved in the range of 0.000 2-0.040 0 mg·L-1. At the spiked levels of 0.01,0.50 and 2.00 mg·kg-1,the average recoveries of fenpyroximate in dried and fresh wolfberry ranged from 78% to 105%,with a maximum relative standard deviation of 9.4%,and the limits of quantification was 0.010 mg·kg-1. The degradation test indicated that fenpyroximate degraded rapidly in fresh wolfberry at all test sites,and the degradation curves could not be fitted,while the half-lives in dried wolfberry were 3.9 and 4.3 d,respectively,in Yinchuan of Ningxia and Taiyuan of Shanxi, indicating that fenpyroximate is an easily degradable pesticide. Under the recommended application conditions,the residues of fenpyroximate in fresh wolfberry and dried wolfberry samples with a harvest interval of 7 d were <0.010 mg·kg-1 and <0.010-0.045 mg·kg-1,respectively. The maximum residue levels were all below the maximum residue limits established in China. Therefore,a pre-harvest interval of 7 d is recommended.

Key words: wolfberry, fenpyroximate, residue, degradation dynamics

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