caa a22 4500 445880791 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0526-7 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0526-7 Solid-phase microfibers based on modified single-walled carbon nanotubes for extraction of chlorophenols and organochlorine pesticides [Elektronische Daten] [Yin Sun, Wei-Ya Zhang, Jun Xing, Cheng-Ming Wang] Solid-phase microextraction (SPME) based on carboxylated single-walled carbon nanotube fibers was used to extract several chlorophenols (CPs) and organochlorine pesticides (OCPs) from aqueous samples prior to their determination by GC with electron capture detection. The main parameters affecting microextraction (temperature, time, stirring rate and salting-out effect) and the conditions of the thermal desorption in the GC injector were optimized. Compared with commercial SPME fibers, the fiber presented better selectivity and sensitivity. Linear response was found for the concentration range between 2 and 1000ngL−1 (20-1000ngL−1 for CPs), and the limits of detection were in the range from 0.07 to 4.36ngL−1. The repeatability expressed as relative standard deviation ranged from 4.1 % to 8.2 % and the fiber-to-fiber reproducibility for four prepared fibers was between 6.5 % and 10.8 %. The method was successfully applied to the analysis of CPs and OCPs in lake water and waste water samples. Recovery was tested with spiked lake water and waste water samples, with values ranging from 89.7 % to 101.2 % in case of waste water samples. Figure Raman spectra: (A) SWNTs, and (B) Oxidized SWNTs Springer-Verlag, 2011 Single-walled carbon nanotubes nationallicence Headspace analysis nationallicence Solid-phase microextraction nationallicence Chlorophenols nationallicence Oganochlorine pesticides nationallicence Sun Yin College of Food Science &Technology, Huazhong Agricultural University, 430070, Wuhan, China aut Zhang Wei-Ya Shenzhen Entry-Exit Inspection and Quarantine Bureau, 518045, Shenzhen, China aut Xing Jun College of Chemistry and Molecular Science, Wuhan University, 430072, Wuhan, China aut Wang Cheng-Ming College of Food Science &Technology, Huazhong Agricultural University, 430070, Wuhan, China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 223-229 0026-3672 173:1-2<223 2011 173 604 https://doi.org/10.1007/s00604-010-0526-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0526-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Yin College of Food Science &Technology, Huazhong Agricultural University, 430070, Wuhan, China aut NATIONALLICENCE 700 1- Zhang Wei-Ya Shenzhen Entry-Exit Inspection and Quarantine Bureau, 518045, Shenzhen, China aut NATIONALLICENCE 700 1- Xing Jun College of Chemistry and Molecular Science, Wuhan University, 430072, Wuhan, China aut NATIONALLICENCE 700 1- Wang Cheng-Ming College of Food Science &Technology, Huazhong Agricultural University, 430070, Wuhan, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 223-229 0026-3672 173:1-2<223 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer