caa a22 4500 445803126 CHVBK 20180317145147.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10337-011-2050-2 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2050-2 Residue Analysis of Fluroxypyr-meptyl in Wheat and Soil by GC-ECD [Elektronische Daten] [Ji-Ye Hu, Ya-Qin Hu, Zi-Han Zhen, Zhu-Bo Deng] A simple and reliable analytical method for fluroxypyr-meptyl residues in wheat and soil was established. The residual levels and dissipation rates of this pesticide in wheat and soil were determined by gas chromatography with electron capture detector (GC-ECD). Samples of wheat grains and soil were extracted with methanol-water, and then liquid-liquid partitioned with dichloromethane. The extracts were further cleaned up by solid-phase extraction (SPE) with Florisil cartridges (500mg, 3mL), and eluted with petroleum ether-acetic ether (95/5, v/v). The eluate was collected and concentrated for GC-ECD analysis. The results showed good linearity (r 2=0.999) over the concentration range of 0.01-1.0μgmL−1. Limits of quantification (LOQ) of the method were 0.005mgkg−1 for both soil and wheat grains. Average recoveries for the wheat grains and soil samples were 84.45-108.2% and 95.33-106.6%, respectively, and the corresponding relative standard deviations (RSDs) of the recovery data were 0.819-3.77% and 1.55-5.28% for the three fortified levels (0.005, 0.1, 0.5mgkg−1). The half-life of fluroxypyr-meptyl in soil from experimental field was 1.93days (in Beijing) and 3.01days (in Tianjin). The final residue of the pesticide in wheat and soil was lower than 0.005mgkg−1, respectively, at harvest time. The analytes in real samples were further confirmed by gas chromatography-mass spectrometry (GC-MS). It was demonstrated that the proposed method was simple and efficient, and particularly suitable for detecting fluroxypyr-meptyl residues in wheat and soil. Springer-Verlag, 2011 Gas chromatography-electron capture detector nationallicence Solid-phase extraction nationallicence Fluroxypyr-meptyl nationallicence Pesticide residue nationallicence Wheat and soil nationallicence Hu Ji-Ye School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut Hu Ya-Qin Civil and Environment Engineering School, University of Science and Technology Beijing, 100083, Beijing, China aut Zhen Zi-Han School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut Deng Zhu-Bo School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut Chromatographia Springer-Verlag 74/3-4(2011-08-01), 291-296 0009-5893 74:3-4<291 2011 74 10337 https://doi.org/10.1007/s10337-011-2050-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2050-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hu Ji-Ye School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 700 1- Hu Ya-Qin Civil and Environment Engineering School, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 700 1- Zhen Zi-Han School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 700 1- Deng Zhu-Bo School of Chemical and Biological Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/3-4(2011-08-01), 291-296 0009-5893 74:3-4<291 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer