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《Environmental Science & Technology》 2011-05
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Preparation Technology of Five Kinds of Organophosphrous Pesticides Referance Materials by High-performance Liquid Chromatography

CHENG Hai-liang1,2,XUE Wen-ping1,XU Heng-zhen2,ZHAN Ye-jing2,3,ZHOU Bo2,3(1.School of Chemistry Engineering & Material,Dalian Polytechnic University,Dalian 116034,China;2.National Marine Environmental Monitoring Center,Dalian 116023,China;3.Ocean Environmental Engineering Institute,Dalian Fishery University,Dalian 116023,China)  
Five kinds of Organophosphrous pesticides(OPPs) were separated and prepared by high-performance liquid chromatography(HPLC) at the same time.The analysis conditions were optimized for UV detection wavelength and the proportion of mobile phase,and examined for its precision and minimum detection limit.Results showed that under the conditions of methanol: water(70:30,V/V) as mobile phase,210 nm of UV wavelength and flow rate of 1.0 mL/min,HPLC can separate five kinds of OPPs in the orginal liquid chemical products and obtain five kinds of reference materials of OPPs induding omethoate,trichlorfon,dichlorvos,malathion and phorate.The minimum detection limits of the method ranged from 1.05 ng to 2.28 ng except trichlorfon(42.72 ng),the concentrations of preparation from 30.5 μg/mL to 1,066.3 μg/mL.The purities were up to 97% or more.The recoveries ranged from 99.89% to 120.04% except omethoate.The relative standard deviations were in the range of 0.38% to 6.40%,with high precision.The method is applied to the analysis,detection and preparation of OPPs.
【Fund】: 国家高技术研究发展计划(863)项目(2006AA09Z164);; 国家自然科学基金项目资助(40876056)
【CateGory Index】: R595.4
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