分散固相萃取净化-气相色谱-质谱联用法测定茶叶中7种杀螨杀虫类农药残留

目的建立茶叶中7种农药残留的快速检测方法。方法采用分散固相萃取净化,气相色谱-质谱法（gas chromatography-mass spectrometry,GC-MS）测定茶叶中噻螨酮、噻嗪酮、哒螨灵、喹瞒醚、苯醚甲环唑、联苯菊酯和氟氰戊菊酯7种农药的残留。结果 7种农药在0.05-5.00 mg/kg范围有良好的线性关系,相关系数均大于或等于0.9995。3个浓度的平均加标回收率为70%-115%,相对标准偏差为5.0%-13.2%;方法检出限（limit of detection,LOD）为0.005-0.05 mg/kg,定量限（limit of quantitation,LOQ）为...

Full description

Saved in:
Bibliographic Details
Published in食品安全质量检测学报 Vol. 8; no. 9; pp. 3485 - 3490
Main Author 李玮;贾彦博;林伟杰;王秀丽;金崇崇;马慧丽;洪春来
Format Journal Article
LanguageChinese
Published 杭州市食品药品检验研究院,杭州,310014%浙江省农业科学院,杭州,310021 2017
Subjects
分散固相萃取
哒螨灵
喹瞒醚
噻嗪酮
噻螨酮
气相色谱-质谱法
氟氰戊菊酯
联苯菊酯
苯醚甲环唑
茶叶
哒螨灵、喹瞒醚、苯醚甲环唑、联苯菊酯
gas chromatography-mass spectrometry
buprofezin
flucythrinate
dispersive solid phase extraction
气相色谱-质谱法
pyridaben
茶叶
噻嗪酮
tea
氟氰戊菊酯
噻螨酮
difenoconazole
fenazaquin
hexythiazox
分散固相萃取
bifenthrin
Online AccessGet full text
ISSN2095-0381

Cover

More Information
Summary:目的建立茶叶中7种农药残留的快速检测方法。方法采用分散固相萃取净化,气相色谱-质谱法（gas chromatography-mass spectrometry,GC-MS）测定茶叶中噻螨酮、噻嗪酮、哒螨灵、喹瞒醚、苯醚甲环唑、联苯菊酯和氟氰戊菊酯7种农药的残留。结果 7种农药在0.05-5.00 mg/kg范围有良好的线性关系,相关系数均大于或等于0.9995。3个浓度的平均加标回收率为70%-115%,相对标准偏差为5.0%-13.2%;方法检出限（limit of detection,LOD）为0.005-0.05 mg/kg,定量限（limit of quantitation,LOQ）为0.015-0.15 mg/kg。采用此方法抽检了我国不同地区市场上的110批次的茶叶样品,其中有15批次样品检出联苯菊酯,含量在24-1640μg/kg之间;有4批次样品中检出噻嗪酮,含量在35-150μg/kg之间;3批次样品检出哒螨灵,含量在70-200μg/kg之间。结论本方法符合农药残留分析标准的要求,可用于茶叶中7种农药残留的快速检测和确证分析。
Bibliography:dispersive solid phase extraction; gas chromatography-mass spectrometry; tea; hexythiazox; buprofezin; pyridaben; fenazaquin; difenoconazole; bifenthrin; flucythrinate
11-5956/TS
LI Wei1, JIA Yan-Bo1, LIN Wei-Jie1, WANG Xiu-Li1, JIN Chong-Chong1, MA Hui-Li1, HONG Chun.Lai2. （1. Hangzhou Institute for Food and Drug Control, Hangzhou 310014, China; 2. Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China）
Objective To establish a rapid detection method for 7 pesticide residues in tea. Methods The residues of hexythiazox, buprofezin, pyridaben, fenazaquin, difenoconazole, bifenthrin and flucythrinate in tea were detected by dispersion solid phase extraction purification combined with gas chromatography-mass spectrometry （GC-MS）. Results The 7 pesticides had good linear relationships in the range of 0.05-5.00 mg/kg, and the correlation coefficients were larger than or equal to 0.9995. The recoveries of 7 pesticides of 3 different spiked levels were 70%-115%, with the relative standard deviations of 5.0%-
ISSN:2095-0381