期刊
TALANTA
卷 142, 期 -, 页码 104-109出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.04.034
关键词
Zeolitic imidazolate framework-8-derived nanoporous carbon; Solid phase extraction; Carbamate pesticides; High performance liquid chromatography
资金
- National Natural Science Foundation of China [31171698, 31471643]
- Innovation Research Program of the Department of Education of Hebei for Hebei Provincial Universities [LJRC009]
- Natural Science Foundations of Hebei [B2012204028]
- Scientific and Technological Research Foundation of the Department of Education of Hebei Province [ZD20131033]
In this work, a chemically and thermally robust and highly porous zeolite-type metal-organic framework, zeolitic imidazolate framework-8 (ZIF-8), was used as both a precursor and a template and furfuryl alcohol as a second precursor to synthesize a nanoporous carbon. The prepared ZIF-8-derived nanoporous carbon was used as the solid-phase extraction adsorbent for the extraction of carbamate pesticides from cabbage and water samples. The adsorbed analytes were eluted with acetonitrile for the determination by high performance liquid chromatography-ultraviolet detection. The high surface area, high porosity, good stability and fast adsorption/desorption kinetics of the material enabled it to have a high adsorption capacity and good adsorption performance. Under optimum conditions, good linearity for the analytes in the range of 0.5-100 ng g(-1) and 0.05-20 ng mL(-1) existed for cabbage and water samples with the correlation coefficients of 0.9968-0.9980 and 0.9990-0.9995, respectively. The limits of detection (S/N=3) for the analytes were in the range of 0.25-0.1 ng g(-1) and 0.01-0.02 ng mL(-1) for the cabbage and water samples, respectively. The relative standard deviations (RSDs) for intra-day and the inter-day determinations of the analytes were below 7.0% and 12.5%, respectively. (C) 2015 Elsevier B.V. All rights reserved.
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