加速溶剂萃取-气相色谱测定土壤中有机磷农药
GC Determination of Organophosphorus Pesticides in Soil with Accelerated Solvent Extraction of Sample
摘 要
提出了气相色谱法测定土壤中8种有机磷农药含量的方法。样品以水为分散剂、丙酮-二氯甲烷(1+4)混合溶剂为萃取剂,经加速溶剂萃取仪在60 ℃静态萃取5 min。采用DB17色谱柱分离,火焰光度检测器测定有机磷农药。8种有机磷农药的检出限(3S/N)在3.0~7.2 μg·L-1之间。以土壤样品为基体,进行加标回收试验,回收率在73.3%~110%之间,相对标准偏差(n=7)在5.9%~15%之间。
气相色谱法
有机磷农药
土壤
Accelerated solvent extraction
GC
Organophosphorus pesticides
Soil
Abstract
Contents of 8 organophosphorus pesticides in soil were determined by GC. The sample was dispersed with water and extracted with mixed solvent of acetone-dichloromethane (1+4) at 60 ℃ for 5 min. DB17 column and flame photometric detector were used for separation and determination of the 8 pesticides. Values of detection limit (3S/N) were found in the range of 3.0-7.2 μg·L-1. Using sample of soil as matrixes, test for recovery was made by standard addition method, and values of recovery obtained were in the range of 73.3%-110%, with values of RSD′s (n=7) in the range of 5.9%-15%.
中图分类号 O657.7
所属栏目 工作简报
基金项目 中国地质调查项目持续性有机污染物实验技术与分析方法研究(201120)资助
收稿日期 2011/12/8
修改稿日期
网络出版日期
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备注张莉(1965-),女,河北保定人,高级工程师,研究方向为有机分析。
引用该论文: ZHANG Li,LI Xiao-ya,ZHANG Yong-tao,GUI Jian-ye,LI Ke. GC Determination of Organophosphorus Pesticides in Soil with Accelerated Solvent Extraction of Sample[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2013, 49(2): 199～201
张莉,李晓亚,张永涛,桂建业,李科. 加速溶剂萃取-气相色谱测定土壤中有机磷农药[J]. 理化检验－化学分册, 2013, 49(2): 199～201
被引情况:
【1】肖珊美,罗小会, "浊点萃取-酶抑制-分光光度法测定蔬菜中有机磷农药残留量",理化检验－化学分册 51, 713-715(2015)
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参考文献
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