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Title of Journal: Anal Bioanal Chem

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Abbravation: Analytical and Bioanalytical Chemistry

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Springer-Verlag

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10.1007/s10569-009-9248-8

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1618-2650

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Passive sampling and stir bar sorptive extraction

Authors: Emanuele Magi Marina Di Carro Camilla Liscio
Publish Date: 2010/04/08
Volume: 397, Issue: 3, Pages: 1335-1345
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Abstract

A new method using the extraction and preconcentration capabilities of stir bar sorptive extraction combined with highresolution gas chromatography and mass spectrometry was developed for the determination of five selected endocrinedisrupting compounds 4nnonylphenol bisphenol A estrone 17βestradiol and 17αethinylestradiol in water In situ derivatization to transform the phenolic compounds into lipophilic and volatile analytes was carried out with acetic anhydride Two different methods of headspace derivatization to further improve the chromatographic properties of 17βestradiol and 17αethinylestradiol were developed and compared The optimized method provided good sensitivity limits of quantitation 12–26 ng repeatability relative standard deviation 2–9 and reproducibility relative standard deviation 10–17 Passive sampling by means of polar organic chemical integrative samplers was applied to monitor river waters used as supply sources for drinking water treatment plants in the Liguria region of Italy The analytes showed a different distribution at the three sites considered bisphenol A proved to be the most abundant ranging from 185 to 459 ng per samplerThis work was supported by a financial contribution from Fondazione AMGA Genova The authors wish to thank Dr Carlo Scapolla for his helpful scientific discussion SRA Instruments srl Milan Italy is acknowledged for providing the Gerstel multipurpose sampler with Twister® option

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