caa a22 4500 445804130 CHVBK 20180317145151.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10337-011-2130-3 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2130-3 A Polypyrrole-Based Sorptive Microextraction Coating for Preconcentration of Malathion from Aquatic Media [Elektronische Daten] [Habib Bagheri, Ali Aghakhani, Zahra Ayazi, Mahdiar Khakinezhad] A new micro-solid phase extraction method was developed by combining solid-phase extraction and stir bar sorptive extraction to benefit from the advantages of both techniques. A polypyrrole coating was electrochemically synthesized on the surface of an already used graphite furnace, employed in electro-thermal atomic absorption spectroscopy. The cylindrical geometry of the graphite tube provided a rather huge surface area, suitable for sorptive extraction. The novel sorbent coating was examined as an extracting medium to isolate malathion. Effects of different parameters such as extraction time, salt concentration, sample volume, desorption solvent and time were investigated and optimized. Under the optimized conditions, the limit of detection and limit of quantification of the developed method were 5 and 20ngL−1, respectively. The calibration curve showed linearity in the range of 0.1-100μgL−1 (R 2=0.9968). The precision was evaluated at 0.1 and 1μgL−1 concentration levels and relative standard deviations (n=3) were found to be 10 and 7%, respectively. The developed method was successfully applied to the extraction of malathion from real river water and tap water samples, and relative recoveries at the spiked level of 0.1μgL−1 were 94 and 97%, respectively. Springer-Verlag, 2011 Gas chromatography-mass spectrometry nationallicence Polypyrrole coated tube nationallicence Electrochemical coating nationallicence Micro-solid phase extraction nationallicence Malathion nationallicence Water analysis nationallicence Bagheri Habib Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Aghakhani Ali Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Ayazi Zahra Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Khakinezhad Mahdiar Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Chromatographia Springer-Verlag 74/9-10(2011-11-01), 731-735 0009-5893 74:9-10<731 2011 74 10337 https://doi.org/10.1007/s10337-011-2130-3 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2130-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bagheri Habib Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 700 1- Aghakhani Ali Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 700 1- Ayazi Zahra Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 700 1- Khakinezhad Mahdiar Department of Chemistry, Environmental and Bio-Analytical Laboratories, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/9-10(2011-11-01), 731-735 0009-5893 74:9-10<731 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer