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《Environmental Science & Technology》 2010-01
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Aqueous Two-phase Gas Floatation Spectrometric Determination of Trace Oxytetracycline in Wastewater

HOU Yan-min1,2,YAN Yong-sheng2,LI Chun-xiang2,ZHAO Xiao-jun1(1.School of Chemistry and Chemical Engineering,Pingdingshan University,Pingdingshan 467000,China;2.School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China)  
A novel and green method for separating and enriching trace OTC in sewage by aqueous two-phase gas floatation spectrophotometry was proposed.Hydrophobic complex composed of N(iⅡ)and OTC was floated into organic phase under the optimal conditions of pH 9,home made floatation equipment,tetrahydrofuran as organic solvent and sodium chloride as separating phase reagent.The data was obtained by spectrophotometry after floatation,with linear regression equation as 2.038×105C(mol/L)+0.005,linear range from 1.1×10-7 to 9.7×10-5mol/L,correlation coefficient better than 0.9996,relative recovery 99.8~100.4% and detection limit 7.36×10-8mol/L.It can be applied to analysis of trace OTC in sewage.
【Fund】: 国家自然科学基金项目(20077029);; 江苏省高校自然科学基础研究项目(07KJB610021)
【CateGory Index】: X832
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