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3楼2013-11-08 10:45:40
weiwenkong
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djc9801(杈杈代发): 金币+10, Thanks 2013-11-09 17:48:21
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Accession number: 20134416916248 Title: Determination of the malachite green in sediment by high performance liquid chromatography with fluorescence detection Authors: Deng, Jian Chao1 ; Yang, Xian Qing1 ; Li, Lai Hao1; Cen, Jian Wei1; Hao, Shu Xian1; Wei, Ya1; Xin, Shao Ping1 Author affiliation: 1 South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, National R and D Center for Aquatic Product Processing, Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, China Corresponding author: Yang, X. Q. (yxqgd@163.com) Source title: Advanced Materials Research Abbreviated source title: Adv. Mater. Res. Volume: 781-784 Monograph title: Advances in Chemical Engineering III Issue date: 2013 Publication year: 2013 Pages: 942-946 Language: English ISSN: 10226680 ISBN-13: 9783037858134 Document type: Conference article (CA) Conference name: 3rd International Conference on Chemical Engineering and Advanced Materials, CEAM 2013 Conference date: July 6, 2013 - July 7, 2013 Conference location: Guangzhou, China Conference code: 100403 Publisher: Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland Abstract: A new method of determination of malachite green (MG) in sediment has been developed by high performance liquid chromatography with fluorescence detection (HPLC-FLD). It is based on use of a deoxidation reaction which converts malachite green (MG) into LMG in the process of extraction. The sediment samples were extracted with a solution of formic acid and acetonitrile. Clean up and isolation was performed on MCX solid phase extraction (SPE) column. Chromatographic separation was achieved by using C18 column with an isocratic mobile phase consisting of acetonitrile and ammonium acetate buffer (0.05 M, pH 4.5) (80:20, v/v). High performance liquid chromatography with fluorescence detector (λex=265 nm and λem=360 nm) was used for the determination of LMG. The recovery values of MG in sediment samples fortified with MG were determined by measuring the amount of MG in the samples, after carrying out deoxidation reaction with potassium borohydride, which converts the MG into LMG. Under the optimized conditions, the average recoveries of MG from sediment at three levels (1.0, 10 and 50 μg/kg) were 85.0% (range from 80.8 to 87.6%). Relative standard deviations (RSD) of recoveries at all fortification levels were less than for 9.57% for MG. The method detection limit obtained for MG was 0.5 μg/kg. © (2013)Trans Tech Publications,Switzerland. Number of references: 10 Main heading: Sediments Controlled terms: Acetonitrile - Chemical engineering - Chromatography - Extraction - High performance liquid chromatography - High pressure liquid chromatography - Recovery Uncontrolled terms: Chromatographic separations - Fluorescence detector - High performance liquid chromatography with fluorescence detections - Isocratic mobile phase - Malachite green - Method detection limits - Relative standard deviations - Solid-phase extraction columns Classification code: 483 Soil Mechanics and Foundations - 531 Metallurgy and Metallography - 802.3 Chemical Operations - 804.1 Organic Compounds - 805.1 Chemical Engineering DOI: 10.4028/www.scientific.net/AMR.781-784.942 Database: Compendex Compilation and indexing terms, © 2013 Elsevier Inc. |
2楼2013-11-08 10:41:32