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Stir bar sorptive extraction for the analysis of short-chain chlorinated paraffins in water

✍ Scribed by Julio Llorca-Porcel; Esther Martínez-Soriano; Ignacio Valor

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
310 KB
Volume
32
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

An optimised method using stir bar sorptive extraction (SBSE) and a thermal desorption‐GC‐electron capture detector (GC‐ECD) for the determination of short‐chain chlorinated paraffins from water samples was developed. Recoveries near to 100% were obtained by using 20 mm×0.5 mm (length×film thickness) PDMS commercial stir bars from 200 mL spiked water samples and 20% methanol addition with an extraction period of 24 h. Method sensitivity, linearity and precision were evaluated for surface water and wastewater spiked samples. A LOD of 0.03 and 0.04 μg/L was calculated for surface and wastewater, respectively. The precision of the method given as an RSD was below 20% for both matrices. The developed method was applied for the analysis of two real samples from a contaminated river and a wastewater treatment plant. Results were in accordance with those obtained using a previously developed method based on solid phase microextraction (SPME).

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