Dispersive liquid–liquid microextraction with little solvent consumption combined with gas chromatography–mass spectrometry for the pretreatment of organochlorine pesticides in aqueous samples

2009 ◽  
Vol 1216 (27) ◽  
pp. 5171-5175 ◽  
Author(s):  
Wan-Chun Tsai ◽  
Shang-Da Huang
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