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Mikrochim Acta

Title:		A nanoporous carbon material coated onto steel wires for solid-phase microextraction of chlorobenzenes prior to their quantitation by gas chromatography
Author(s):		Cheng H; Song Y; Bian Y; Wang F; Ji R; He W; Gu C; Ouyang G; Jiang X;
Address:		"Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China. University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China. yrbian@issas.ac.cn. University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China. yrbian@issas.ac.cn. College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, People's Republic of China. MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China. jiangxin@issas.ac.cn. University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China. jiangxin@issas.ac.cn"
Journal Title:		Mikrochim Acta
Year:		2017
Volume:		20171218
Issue:		1
Page Number:		56 -
DOI:		10.1007/s00604-017-2539-y
ISSN/ISBN:		1436-5073 (Electronic) 0026-3672 (Linking)
Abstract:		"A nanoporous carbon material was synthesized by heating potassium citrate without using a template or an activating agent. It is shown to represent a viable coating for use in solid-phase microextraction. The material is thermally stable and mainly consists of amorphous sheets of sp(2)-bonded carbon. It has an extensive pore structure and a surface area as large as 1236 m(2).g(-1). The nanoporous carbon was deposited on the surface of steel wires, and the resulting fibers were applied to the extraction of trace levels of chlorobenzenes in water samples. Following extraction by absorbing, the chlorobenzenes were quantified by gas chromatograph in combination with electron capture detection. Extraction temperature and time, and desorption temperature were optimized (80 degrees C, 10 min and 310 degrees C). Under optimized conditions, the calibration plots are linear in the following concentration ranges: 2.5 to 100 ng.L(-1) (pentachlorobenzene), 5 to 200 ng.L(-1) (1,2,3,4-tetrachlorobenzene), 10 to 100 ng.L(-1) (hexachlorobenzene) and 10 to 500 ng.L(-1) (1,2,3-trichlorobenzene, 1,2,4-trichlorobenzene, 1,3,5-trichlorobenzene). Other figures of merit include (a) high enrichment factors (8324 to 9920), (b) low limits of detection (0.10-1.03 ng.L(-1)), and (c) good reproducibility (relative standard deviations including intra-day and inter-day with a single fiber and fiber-to-fiber were below 6.4% at a mixed concentration level of 2.5, 5, and 10 ng.L(-1) respectively in ultra-water). This method was successfully applied to the determination of chlorobenzenes in (spiked) lake waters where it gave recoveries between 82.3% and 104.5%. Graphical abstract A nanoporous carbon material was synthesized by heating potassium citrate without using a template or an activating agent and used as a viable coating of solid-phase microextraction for chlorobenzenes"
Keywords:		Activation Adsorption Coating Determination Polydimethylsiloxane Potassium citrate Separation technology Volatile organic compounds Water samples pi stacking;
Notes:		"PubMed-not-MEDLINECheng, Hu Song, Yang Bian, Yongrong Wang, Fang Ji, Rongting He, Wenxiang Gu, Chenggang Ouyang, Gangfeng Jiang, Xin eng 2016YFD08000204/The National Science and Technology Major Project of China/International 2014CB441105/The National Key Basic Research Program of China/International 41671236/The National Natural Science Foundation of China/International 21377138/The National Natural Science Foundation of China/International BK20150050/The Outstanding Youth Fund of the Natural Science Foundation of Jiangsu, China/International ISSASIP1614/The '135' Plan and Frontiers Program of the Institute of Soil Science, Chinese Academy of Sciences/International Research Support, Non-U.S. Gov't Austria 2018/03/30 Mikrochim Acta. 2017 Dec 18; 185(1):56. doi: 10.1007/s00604-017-2539-y"