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农学学报

农学学报 ›› 2019, Vol. 9 ›› Issue (11): 63-66.doi: 10.11923/j.issn.2095-4050.cjas20190500051

• 农业工程 农业机械 生物技术 食品科学 • 上一篇    下一篇

HPLC-MS/MS检测琯溪蜜柚中乙唑螨腈残留量及套袋对残留的影响

赖添财   

  1. 漳州市农业检验监测中心
  • 收稿日期:2019-05-22 修回日期:2019-07-25 接受日期:2019-07-25 出版日期:2019-11-19 发布日期:2019-11-19
  • 通讯作者: 赖添财 E-mail:赖添财
  • 基金资助:
    2018 年漳州市自然科学基金项目“琯溪蜜柚中多残留QuEChERS HPLC-MS/MS检测方法的建立及套袋控残技术研究”(2018N02020057)。

SYP-9625 Residue in Citrus grandis‘Guanxi miyou’Tested by HPLC-MS/MS and Bagging Effect on Residue

  • Received:2019-05-22 Revised:2019-07-25 Accepted:2019-07-25 Online:2019-11-19 Published:2019-11-19

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摘要： 为了评价乙唑螨腈在琯溪蜜柚上的安全性，研究其残留降解动态。设计套袋和非套袋两种处理，按推荐剂量和加倍推荐剂量在蜜柚上各施药1次进行田间试验，采用高效液相色谱-串联质谱法进行残留检测。结果表明：乙唑螨腈在0.4~400 μg/L（注意单位是正体！下同！）浓度范围内具有良好的线性关系(r2 = 0.9997)，检出限为0.06 μg/kg，添加回收率为84.2%~90.0%，RSD为5.6%~8.4%。乙唑螨腈在蜜柚上的降解规律符合一级动力学关系，降解系数(k)在0.1444~2271之间，套袋处理的半衰期(T1/2)为3.56~4.80天，未采用套袋处理的T1/2为3.05~3.50天。套袋处理的半衰期大于未采用套袋的半衰期，施药后65天最终产品中均未检出乙唑螨腈残留。

关键词: 山楂园, 山楂园, 草本植物, TWINSPAN分类, DCA排序, 物种多样性

Abstract: To evaluate the safety of SYP- 9625 in Citrus grandis‘Guanxi miyou’, study the residual degradation dynamics of SYP-9625, we designed 2 treatments of bagging and no-bagging, sprayed SYP-9625 once with the recommended dose or double recommended dose, and determined the residues by HPLC-MS/ MS. The results showed that: there was a good linear relationship (r2=0.9997) in the range of 0.4-400 μg/L of SYP-9625, and the detection limit (LOD), there coveries and there lative standard deviations (RSD) was 0.06μg/kg, 84.2%-90.0% and 5.6%-8.4%, respectively; the residual degradation dynamics of SYP-9625 accorded with the first order kinetic equation (k 0.1444-0.2271), and the half-life (T1/2) of bagging and no-bagging treatment was 3.56-4.80 days and 3.05-3.50 days, respectively; SYP-9625 degraded more slowly in bagging treatment, and the residue of SYP-9625 was not detected in all final products 65 days after the application.

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