| GC-NCI-MS快速检测食用菌中菊酯类农药 |
| |
| 引用本文： | 余苹中,贾春虹,赵尔成,贺敏,陈莉,朱晓丹.GC-NCI-MS快速检测食用菌中菊酯类农药[J].农药科学与管理,2012,33(5):33-37. |
| |
| 作者姓名： | 余苹中 贾春虹 赵尔成 贺敏 陈莉 朱晓丹 |
| |
| 作者单位： | 1. 北京市农林科学院植保环保研究所,北京100097／中国农业大学理学院,北京100193
2. 北京市农林科学院植保环保研究所,北京,100097 |
| |
| 基金项目： | 北京市农林科学院青年基金 |
| |
| 摘 要： | 建立了气相色谱-负化学离子化质谱法（GC-NCI-MS）快速检测食用菌中6种拟除虫菊酯农药残留量的分析方法。前处理对QuECHERS方法进行优化,样品用含0.5%乙酸的乙腈溶液提取,PSA吸附剂净化,GC-NCI-MS选择离子监测（SIM）方式对6种菊酯类农药进行检测。结果表明：6种拟除虫菊酯农药在0.007～5.0mg/L的浓度范围内线性良好,相关系数为0.999 2～0.999 9;最低检测浓度为1～3mg/kg;添加浓度为0.05mg/kg时,平均回收率为87.0～103.6%,变异系数为3.2～17.3%;添加浓度为0.1mg/kg时,平均回收率为82～99%,变异系数为2.1～14.5%。
|
| 关 键 词： | 气相色谱-负化学离子化质谱 食用菌 拟除虫菊酯 农药残留 |
Determination of Pyrethroid Pesticides Residue in Edible Fungus by Gas Chromato- graphy-negative Chemical Ionization-Mass Spectrometry |
| |
| Yu Pingzhong,Jia Chunhong,Zhao Ercheng,He Min,Chen Li,Zhu Xiaodan.Determination of Pyrethroid Pesticides Residue in Edible Fungus by Gas Chromato- graphy-negative Chemical Ionization-Mass Spectrometry[J].Pesticide Science and Administration,2012,33(5):33-37. |
| |
| Authors: | Yu Pingzhong Jia Chunhong Zhao Ercheng He Min Chen Li Zhu Xiaodan |
| |
| Institution: | (Institute of Plant Protection and Environmental Protection,Academy of Beijing Agricultural Science,Beijing 100097,China) Yu Pingzhong(College of Science China Agricultural University,Beijing 100193,China) |
| |
| Abstract: | A determination of 6 pyrethroid pesticides residue in edible fungus was developed by gas chromatography-mass spectrometry operated in negative-ion chemical ionization mode(GC-NCI-MS).The samples were pretreated by using a modified QuEChERS method.Acetonitrile containing 0.5% acetic acid was used as extraction solvent.The extracts were analyzed by GC-NCI-MS after being subjected to a simple clean-up procedure using PSA.The results showed that the calibration linear for 6 pyrethroid pesticides range from 0.007mg/L to 5.0mg/L with a correlation coefficient of 0.999 2~0.999 9.The LODs range from 1μg/kg to 3μg/kg.Average recoveries spiked at the levels of 0.05 mg/kg ranged from 87% to 103.6%,the relative standard deviations were between 3.2% and 17.3%.Average recoveries spiked at the levels of 0.1mg/kg ranged from 82% to 99%,the relative standard deviations were between 2.1% and 14.5%. |
| |
| Keywords: | GC-NCI-MS edible fungus pyrethroid residue |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
