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Electrospun composite of polypyrrole-polyamide as a micro-solid phase extraction sorbent

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Abstract

A micro-solid phase extraction technique was developed using a novel polypyrrole-polyamide nanofiber sheet, fabricated by electrospinning method. The applicability of the new nanofiber sheet was examined as an extracting medium to isolate malathion as a model pesticide from aqueous samples. Solvent desorption was subsequently performed in a microvial, and an aliquot of extractant was injected into gas chromatography–mass spectrometry. Various parameters affecting the electrospinning process including monomer concentration, polyamide content, applied voltage, and electrospinning time were examined. After fabricating the most suitable preparation conditions, influential parameters on the extraction and desorption processes were optimized. The developed method proved to be rather convenient and offers sufficient sensitivity and good reproducibility. The limit of detection (S/N = 3) and limit of quantification (S/N = 10) of the method under optimized conditions were 50 and 100 ng L−1, respectively. The relative standard deviation at concentration level of 1 ng mL−1 was 2% (n = 3). The calibration curve of analyte showed linearity in the range of 0.1–1 ng mL−1 (R 2 = 0.9975). The developed method was successfully applied to tap and Zayanderood river water samples, while the relative recovery percentages of 98% and 96% were obtained, respectively. The whole procedure showed to be conveniently applicable and quite easy to be manipulated.

Scheme of the electrospinning setup used for preparation of nanofibers-based polypyrrole-polyamide sorbent

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Acknowledgements

The Research Council and Graduates School of Sharif University of Technology (SUT) are thanked for supporting the project. Also, we would like to acknowledge the Iran National Elite Foundation for their support for Ali Aghakhani and Zahra Ayazi.

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Authors and Affiliations

  1. Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran

    Habib Bagheri, Ali Aghakhani, Maryam Akbari & Zahra Ayazi

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  1. Habib Bagheri
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  2. Ali Aghakhani
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  3. Maryam Akbari
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  4. Zahra Ayazi
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Correspondence to Habib Bagheri.

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Bagheri, H., Aghakhani, A., Akbari, M. et al. Electrospun composite of polypyrrole-polyamide as a micro-solid phase extraction sorbent. Anal Bioanal Chem 400, 3607–3613 (2011). https://doi.org/10.1007/s00216-011-4993-4

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  • DOI: https://doi.org/10.1007/s00216-011-4993-4

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