Determination of organochlorine pesticides in water using dynamic hook-type liquid-phase microextraction

We developed a simple and efficient headspace liquid-phase microextraction (LPME) technique named dynamic hook-type liquid-phase microextraction (DHT-LPME) and used it in combination with gas chromatography–mass spectrometry (GC–MS) and an electron capture detector (ECD). Aqueous specimens of organo...

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Bibliographic Details
Published in:Analytica chimica acta 2009-08, Vol.647 (2), p.177-181
Main Authors: Chen, Pai-Shan, Huang, Shih-Pin, Fuh, Ming-Ren, Huang, Shang-Da
Format: Article
Language:English
Subjects:
Analytical chemistry
Calibration
Chemical Fractionation - instrumentation
Chemical Fractionation - methods
Chemistry
Chromatographic methods and physical methods associated with chromatography
Dynamic hook-type liquid-phase microextraction
Equipment Design
Exact sciences and technology
Gas chromatographic methods
Gas Chromatography-Mass Spectrometry - methods
Gas chromatography–mass spectrometry
Headspace
Hydrocarbons, Chlorinated - analysis
Hydrocarbons, Chlorinated - isolation & purification
Organochlorine pesticides
Pesticides - analysis
Salts - chemistry
Sensitivity and Specificity
Solvents - chemistry
Spectrometric and optical methods
Temperature
Time Factors
Water - analysis
Water Pollutants, Chemical - analysis
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Summary:We developed a simple and efficient headspace liquid-phase microextraction (LPME) technique named dynamic hook-type liquid-phase microextraction (DHT-LPME) and used it in combination with gas chromatography–mass spectrometry (GC–MS) and an electron capture detector (ECD). Aqueous specimens of organochlorine pesticides (OCPs) were used as model compounds to demonstrate the effectiveness of the technique. In the present study, the calibration curves were linear over at least 2 orders of magnitude with R 2 values of 0.997. The method detection limits (MDLs) varied from 2 to 44.0 ng L −1. The precision of DHT-LPME ranged from 6.5 to 14.4%. The relative recoveries of OCPs in rainwater were more than 84.2%. Enrichment factors (EF) in the range 275–1127 were obtained using DHT-LPME.
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2009.06.018