不同方法提取海岸带沉积物中多氯联苯及有机氯农药测定的比较
Comparison of Determination of Polychlorobiphenyls and Organochlorine Pesticides from Sediments of Coastal Zones with Various Extracting Methods
摘 要
针对海岸带沉积物基质的复杂性,以美国国家标准技术研究院研制的海洋沉积物标准样品(SRM 1944)为研究对象,采用气相色谱-电子捕获检测器进行测定。比较了索氏提取、加速溶剂萃取、超声波辅助提取对其中多氯联苯(PCBs)和12种有机氯农药(OCPs)的提取效率。结果表明:索氏提取的回收率在87.9%~104%之间,加速溶剂萃取在80.1%~106%之间,超声波辅助提取在78.6%~93.8%之间,并用实际海岸带浅层沉积物样品进行验证。
多氯联苯
沉积物
提取方法
Organochlorine pesticides
Polychlorobiphenyls
Sediments
Extracting methods
Abstract
In view of the complexity of the sediments of coastal zones, the sediment standard reference material (SRM 1944) developed by National Institute of Standards and Technology was used to study the efficiency of various extraction methods including soxhlet extraction, accelerated solvent extraction and ultrasound-assisted extraction on the analysis of PCBs and 12 OCPs determined by GC with electron capture detector (ECD). It was found that recovery ranges of OCPs and PCBs with various extracting methods were as follows: soxhlet extraction 87.9%-104%, accelerated solvent extraction 80.1%-106% and ultrasound-assisted extraction 78.6%-93.8%. These results were confirmed by practical coastal shallow sediment samples.
中图分类号 O657.7
所属栏目 工作简报
基金项目 国土资源地质大调查项目(12120113014800)
收稿日期 2013/9/13
修改稿日期
网络出版日期
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联系人作者时磊(njdkssl@163.com)
备注时磊(1983-),男,江苏南京人,助理工程师,硕士,主要从事有机分析工作。
引用该论文: SHI Lei,SHEN Xiao-ming,HU Jing-ke,Lv Ai-juan,CAI Xiao-hu,SHEN Jia-lin. Comparison of Determination of Polychlorobiphenyls and Organochlorine Pesticides from Sediments of Coastal Zones with Various Extracting Methods[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2014, 50(9): 1113～1116
时磊,沈小明,胡璟珂,吕爱娟,蔡小虎,沈加林. 不同方法提取海岸带沉积物中多氯联苯及有机氯农药测定的比较[J]. 理化检验－化学分册, 2014, 50(9): 1113～1116
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参考文献
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【8】李琴,黄云,唐琴秀.快速溶剂提取-气相色谱法测定土壤中19种多氯联苯单体［J］.环境监测管理与技术, 2008,20(6):37-39．
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