Spinach or Amaranth Contains Highest Residue of Metalaxyl, Fluazifop-P-butyl, Chlorpyrifos, and Lambda-cyhalothrin on Six Leaf Vegetables upon Open Field Application
Spinach or Amaranth Contains Highest Residue of Metalaxyl, Fluazifop-P-butyl, Chlorpyrifos, and Lambda-cyhalothrin on Six Leaf Vegetables upon Open Field Application
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露地施用后，菠菜或苋菜在六叶蔬菜上甲霜灵、氟啶禾灵、毒死蜱和高效氯氟氰菊酯的残留量最高
DOI：
10.1021/jf304710u
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发表时间：
2013-03-06
影响因子：
6.1
通讯作者：
Pan, Canping
中科院分区：
文献类型：
--
作者：
Fan, Sufang;Zhang, Fengzu;Pan, Canping
为筛选具有代表性的叶类蔬菜，设计并进行了对小白菜、油菜、雏菊、苋菜、菠菜和生菜等6种作物的甲螨灵、氟虫腈-对丁基、毒死蜱和高效氯氟氰菊酯的田间试验。本研究采用多反应监测的高效液相色谱仪和电喷雾电离串联质谱仪同时测定各种样品中的甲螨灵和氟硝磷-对丁基残留，采用气相色谱仪和电子捕获检测器同时测定毒死蜱和高效氯氰菊酯。在0.01 ~ 0.1 mg kg（-1）加标水平下，甲螨灵、氟虫腈-对丁基、毒死蜱和高效氯氟氰菊酯的定量限在0.001 ~ 0.01 mg kg（-1）之间，平均回收率在67.6 ~ 119.196之间。在现场监督试验中，甲螨灵、氟虫腈-对丁基、毒死蜱和高效氯氰菊酯的半衰期分别为1.11 ~ 3.79 d、1.11 ~ 2.27 d、1.13 ~ 5.17 d和1.77 ~ 6.24 d。施用后菠菜和苋菜的所有农药残留量均高于其他品种。建议在研究与甲螨灵、氟虫磷-对丁基、毒死蜱、高效氯氰菊酯相似的系统杀菌剂、杀虫剂和除草剂时，选择菠菜或苋菜作为叶菜的代表作物。
To select representative leaf vegetables which may contain the highest residue, field experiments of metalaxyl, fluazifop-P-butyl, chlorpyrifos, and lambda-cyhalothrin on six crops including pakchoi, rape, crown daisy, amaranth, spinach, and lettuce were designed and conducted. In this study, a high-performance liquid chromatograph and electrospray ionization tandem mass spectrometer with multiple reaction monitoring was used to simultaneously determine metalaxyl and fluazifop-P-butyl residue in various samples, and a gas chromatograph with electron capture detector was used to detect chlorpyrifos and lambdacyhalothrin. The limits of quantification (LOQ) of metalaxyl, fluazifop-P-butyl, chlorpyrifos, and lambda-cyhalothrin were in the range of 0.001-0.01 mg kg(-1) for all samples, and the average recoveries of all pesticides ranged from 67.6 to 119.196 at spiked levels of 0.01-0.1 mg kg(-1). In supervised field trials, the half-lives of metalaxyl, fluazifop-P-butyl, chlorpyrifos, and lambdacyhalothrin were in the range of 1.11-3.79 days, 1.11-2.27 days, 1.13-5.17 days, and 1.77-6.24 days. It was also found that all pesticide residues in spinach and/or amaranth were higher than others after application. It is recommended that spinach or amaranth can be selected as a representative crop of leaf vegetables in studying systemic fungicide, insecticides, and herbicides with similarity as metalaxyl, fluazifop-P-butyl, chlorpyrifos, and lambda-cyhalothrin.