摘要
该文通过优化土壤中硝基苯类化合物加速溶剂萃取/净化方法的最佳条件。结果表明:采用丙酮-二氯甲烷混合溶剂(1∶1,V/V)为萃取溶剂,萃取温度80℃,循环2次;经硅酸镁柱净化,气相色谱/质谱法进行分析。该法对土壤中20种硝基苯类化合物有良好的分离效果,选择不同浓度基体加标得到的回收率为73.0%~108%,相对标准偏差在1.8%~8.4%之间,方法检出限为2~10μg/kg。
The optimum conditions for accelerated solvent extraction(ASE)/purification of nitrobenzene compounds in soil were optimized. The results showed that acetone-dichloromethane mixed solvent(1∶1, V/V) was used as extractant, the extraction temperature was 80 ℃, the extraction cycle was twice, the preheating time was 5 minute. The samples were purified by Florisil column and analyzed by gas chromatography/mass spectrometry. The method has better separation effect for 20 nitrobenzene compounds in soil. The recovery of matrix addition is 73.0%~108%, the relative standard deviation is 1.8%~8.4%,and the detection limit is 2~10 μg/kg.
作者
王艳丽
赵志强
李利荣
张肇元
吴宇峰
张赞
王琳
WANG Yanli;ZHAO Zhiqiang;LI Lirong;ZHANG Zhaoyuan;WU Yufeng;ZHANG Zan;WANG Lin(Tianjin Eco-Environmental Monitoring Center,Tianjin 300191,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第9期119-125,共7页
Environmental Science & Technology
基金
天津市科技计划项目（16YFXTSF00380）
关键词
加速溶剂萃取
气相色谱/质谱法
土壤
硝基苯类化合物
accelerated solvent extraction(ASE)
gas chromatography/mass spectrometry
soil
nitrobenzene compounds
作者简介
王艳丽(1981-),女,高级工程师,硕士研究生,主要从事环境介质中有机污染物监测工作,(电子信箱)carolwyl@126.com;通讯作者:王琳,(电子信箱)tsw11122@126.com。
