Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables.

Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables. Research Abstract Details 

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Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables. Abstract Text:

Maosheng Zhang,Jiarong Huang,Changlin Wei,Binbin Yu,Xiaoqing Yang,Xi Chen,

A new approach for the extraction of nine kinds of organochlorine pesticides (OCPs) from vegetable samples coupling single-drop microextraction with gas chromatography-mass spectrometry was presented. Experimental parameters, such as organic solvent, exposure time, agitation and organic drop volume were controlled and optimized. An effective extraction was achieved by suspending a 1.00microL mixed drop of p-xylene and acetone (8:2, v/v) to the tip of a microsyringe immersed in a 2mL donor aqueous solution and stirred at 400rpm. The approach was applied to the determination of OCPs in vegetable samples with a linearity range of 0.05-20ng mL(-1) for alpha-, beta-, gamma-, delta-hexachlorobenzene (BHC) and dicofol, 0.5-20ng mL(-1) for dieldrin and 2,2-bis(4-chlorophenyl)-1,1-dichloroethane (DDD) or 0.5-50ng mL(-1) for 2,2-bis(4-chlorophenyl)-1,1-dichloroethylene (DDE) and 2-(2-chlorophenyl)-2 (4-chlorophenyl)-1,1,1-trichloroethane (p,p'-DDT). Correspondingly, the determination limit at an S/N of 3 ranged from 0.05ng mL(-1) for alpha-, beta-, gamma-, delta-BHC to 0.2ng mL(-1) for dicofol, dieldrin or p,p'-DDT. The relative recoveries were from 63.3 to 100%, with repeatability ranging from 8.74 to 18.9% (relative standard deviation, R.S.D.). The single-drop microextraction was proved to be a fast and simple approach for the pre-concentration of organochlorine pesticides in vegetable samples.

Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables. Publishing Authors By Initials

M Zhang,J Huang,C Wei,B Yu,X Yang,X Chen,

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Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Talanta

VOLUME: 74

Page Numbers: 599-604

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ISSN: 1873-3573

DAY: 6

MONTH: 07

YEAR: 2007

Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Mixed liquids for single-drop microextraction of organochlorine pesticides in vegetables.

AFFILIATION: Department of Chemistry and the Key Laboratory of Analytical Sciences of the Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.

Country: England

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MEDLINETA: Talanta

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