谷物中6种除草剂的[url=https://insevent.instrument.com.cn/t/Mp]气相色谱检测方法[/url]
谷物中6种除草剂的
气相色谱检测方法
张洪玲;张品;王莹;牛森;周艳明;刘笑;马为民
本文介绍一种运用毛细管
气相色谱法检测谷物中酰胺类除草剂多残留快速测定方法。采用石油醚作为溶剂提取样品中农药,中性氧化铝的层析柱净化,石油醚/乙酸乙酯(9:1,v/v)洗脱。
气相色谱(附ECD检测器)检测,用保留时间和外标法定性、定量。对大米样品进行添加回收率实验,分别添加0.50 mg/kg、0.20mg/kg、0.10 mg/kg、0.05mg/kg、0.02mg/kg,添加回收率在86.5%~109.5%之间,变异系数为3.5%~8.1%。
【作者单位】:沈阳农业大学;沈阳农业大学;沈阳生态所;沈阳农业大学;沈阳农业大学;沈阳农业大学 沈阳 110161;沈阳 110161;沈阳 110016;沈阳 110161;沈阳 110161;沈阳 110161 河北科技师范学院;秦皇岛066000
【关键词】:
气相色谱;除草剂;多残留;谷物
【分类号】:S482.4
【DOI】:CNKI:SUN:NYSJ.0.2007-02-014
【正文快照】:
农药残留污染问题严重威胁着人类的食品安全,这一问题已成为全球关注的焦点,各个国家和地区都出台了相关技术标准,任何在尽可能短的时间内检测出食品中所有的残留农药是迫切需要解决的问题。农药多残留的同时检测方法往往具有简便、快捷、成本低等特点,是值得发展和推广的技术成果。而以往有关粮食产品中农药残留量的分析检测方法,大多为一种农药对应一种方法,这种方法浪费大、成本昂贵、且不符合粮食出产的现状,不能满足粮食产品中多种农药残留同时检测的需要。针对这一现状,本文建立了一种同时检测谷物中6种除草剂的残留量的快速…
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Rapid Determination of Six Herbicide in Corn by Gas Chromatography
ZHANG Hongling~1 ZHANG Pin~1 WANG Ying~2 NIU Sen~1 ZHOU Yanming~1 LIU Xiao~1 MA Weimin~(1;3) (1Shenyang Agriculture University;Shenyang 110161;2Institute of Applied Ecology Chinese Academy of Sciences;Shenyang 110016;3HeBei Normal University of Science and Technology;QinHuang-dao;066000)
A method is described for determining 6 herbicides in com by GC.The residues of herbicides were extracted from samples with petroleum ether and the extractive removed through a neuter alumina column.Then petroleum ether/ethyl acetate(v/v,9/1)eluted it. Herbicides determination was performed with the gas chromatography(with ECD detection).Compounds were identified and determined according to their retention times and the external standard mehthod.Recoveries were obtained by adding 6 herbicides to rice(spiking at 0.50 mg/kg、0.20 mg/kg、0.10 mg/kg、0.05mg/kg、0.02mg/kg levels).The recoveries ranged from 86.5% to 112.5%,and the coefficients of variation was from 3.5% to 8.1%.
【Keyword】:Gas Chromatography;com;Herbicide;multiresidue