caa a22 4500 44580355X CHVBK 20180317145149.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10337-011-2083-6 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2083-6 Magnetic Nanoparticle-Based Micro-Solid Phase Extraction and GC-MS Determination of Oxadiargyl in Aqueous Samples [Elektronische Daten] [Habib Bagheri, Omid Zandi, Ali Aghakhani] A new facile, rapid, inexpensive, and sensitive method based on magnetic micro-solid phase extraction (M-μ-SPE) coupled to gas chromatography-mass spectrometry (GC-MS) was developed for determination of the herbicide oxadiargyl in environmental water samples. The feasibility of employing non-modified magnetic nanoparticles (MNPs) as sorbent was examined and applied to perform the extraction process. Influential parameters affecting the extraction efficiency along with desorption conditions were investigated and optimized. The limit of detection (LOD, S/N=3) and limit of quantification (LOQ, S/N=10) of the method under optimized conditions were 0.005 and 0.030ngmL−1, respectively. The relative standard deviations (RSD) (n=3) at a concentration of 0.10ngmL−1 was 11%. The calibration curve of oxadiargyl showed linearity in the range of 0.050-0.50ngmL−1. The developed method was successfully applied to the extraction of oxadiargyl from spiked tap water and Zayande-Rood River water samples and the relative recoveries of 98 and 94% were obtained, respectively. Springer-Verlag, 2011 Gas chromatography-mass spectrometry nationallicence Magnetic micro-solid phase extraction nationallicence Magnetic nanoparticle nationallicence Fe3O4 nationallicence Oxadiargyl nationallicence Water analysis nationallicence Bagheri Habib Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Zandi Omid Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Aghakhani Ali Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut Chromatographia Springer-Verlag 74/5-6(2011-09-01), 483-488 0009-5893 74:5-6<483 2011 74 10337 https://doi.org/10.1007/s10337-011-2083-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2083-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bagheri Habib Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 700 1- Zandi Omid Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 700 1- Aghakhani Ali Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/5-6(2011-09-01), 483-488 0009-5893 74:5-6<483 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer