Dissipation and residue of metalaxyl and cymoxanil in pepper and soil

被引：31

作者：

Liu, Xiangyun ^{[1
]}

Yang, Yan ^{[1
]}

Cui, Ying ^{[1
]}

Zhu, Huijun ^{[1
]}

Li, Xiong ^{[1
]}

Li, Zhining ^{[1
]}

Zhang, Kankan ^{[1
]}

Hu, Deyu ^{[1
]}

机构：

[1] Guizhou Univ, State Key Lab Breeding Base Green Pesticide & Agr, Key Lab Green Pesticide & Agr Bioengn, Minist Educ, Guiyang 550025, Peoples R China

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2014年 / 186卷 / 08期

关键词：

Metalaxyl; Cymoxail; Pepper; Soil; Residue; Dissipation; LIQUID-CHROMATOGRAPHY; GREENHOUSE TREATMENT; PHYTOPHTHORA BLIGHT; PESTICIDE-RESIDUES; VEGETABLES; BEHAVIOR; GRAPE;

D O I：

10.1007/s10661-014-3779-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A simple and accurate method of determining metalaxyl and cymoxanil in pepper and soil was developed by ultra-performance liquid chromatography-photodiode array detection. The limits of detection were 0.015 mg/kg for metalaxyl and 0.003 mg/kg for cymoxanil. The limits of quantification were 0.05 mg/kg for metalaxyl in pepper and soil as well as 0.01 mg/kg for cymoxanil in pepper and soil. Recoveries of pepper and soil were investigated at three spiking levels and ranged within 77.52 to 102.05 % for metalaxyl and 87.15 to 103.21 % for cymoxanil, with relative standard deviations below 9.30 %. For field experiments, the half-lives of metalaxyl were 3.2 to 3.9 days in pepper and 4.4 to 9.5 days in soil at the three experimental locations in China. At harvest, pepper samples were found to contain metalaxyl and cymoxanil well below the maximum residue limit MRLs of the European Union (EU) following the recommended dosage and the interval of 21 days after last application.

引用

页码：5307 / 5313

页数：7

共 19 条

[1] Residues behavior of some fungicides applied on two greenhouse tomato varieties different in shape and weight [J].