Journal of Ocean University of China
(Oceanic and Coastal Sea
Research)
ISSN 1672-5182, April 30,2005,Vol.4,No.2,pp.173-176
http://www.ouc.edu.cn/xbywb/
E-mail:xbywb@mail.ouc.edu.cn
Extraction of Organochlorine Pesticides in Sediments
Using Soxhlet, Ultrasonic and Accelerated
Solvent Extraction Techniques
LANG Yinhai1),*, CAO Zhengmei2), and NIE Xinhua1)
1) College of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, P.R.China
2) Bureau of Environmental Protection of Qingdao, Qingdao 266003, P.R.China
(Received October 18,2004; accepted March 22,2005)
Abstract The application of soxhlet, ultrasonic and accelerated solvent extraction techniques to
the analysis of six organochlorine pesticides (α-HCH, β-HCH, γ-HCH, o,p′-DDT, p,p′
-DDT and p,p′-DDE) in Taihu Lake sediment samples is described. It was found that the limits of
quantification ranged from 0.002μg g-1 to 0.004μg g-1, and the recoveries of organochlorine
pesticides with the three extraction techniques were acceptable (＞80.7%). With a mass selective
detector, better results were obtained by accelerated solvent extraction using hexane-acetone (1∶1)
as compared with soxhlet and ultrasonic extraction. It was shown that the accelerated solvent
extraction was the optimum technique for the analysis of organochlorine pesticides in sediments.
The general features of the three extraction techniques are also presented.
Key Words organochlorine pesticides; Taihu Lake sediments; soxhlet extraction; ultrasonic
extraction; accelerated solvent extraction
Number
ISSN 1672-5182(2005)02-173-04