AQUEOUS TWO-PHASE GAS FLOATATION SPECTROPHOTOMETRIC DETERMINATION OF TRACE TETRACYCLINE IN ENVIRONMENTAL WATER SAMPLE  

作　　者：HOU Yanmin YAN Yongsheng LI Chunxiang ZHAO Xiaojun WANG Liang 

机构地区：[1]School of Chemistry and Chemical EngineeringPingdingshan University, Henan Pingdingshan 467000, China [2]School of Chemistry and Chemical Engineering Jiangsu University, Zhenjiang, 212013, China

出　　处：《Chinese Journal of Reactive Polymers》2008年第1期74-80,共7页中国反应性高分子（英文版）

基　　金：National Nature Science Foundation Project (20777029);Jiangsu Higher Education Institution Nature Science Foundation Project (07KJB610021)

摘　　要：A green method for separating and enriching trace tetracycline （TC） in environment water by Aqueous Two-phase Gas Floatation Spectrophotometry has been proposed, the principium was discussed. In this paper, the hydrophobic complex composed of Mg（II） and TC was floated into organic phase under the optimal conditions： pH=10, the floatation equipment is home-made, n-propyl alcohol as the organic solvent, sodium chloride as the separating phase reagent. The data were obtained by spectrophotometry after floatation; The linear regression equation is A=2.33×10^5C（mol/L）＋0.2179, linear range is from 3.77×10^-7mol/L to 6.32×10^-5 mol/L, respectively, with thecorrelation coefficient （r） better than 0.9997, relative recoveries is 99.7% to 100.3%, limit of detection was 4.29×10^-5mol/L, The method can be applied to analyse the trace TC in water sample, the result is better.A green method for separating and enriching trace tetracycline (TC) in environment water by Aqueous Two-phase Gas Floatation Spectrophotometry has been proposed, the principium was discussed. In this paper, the hydrophobic complex composed of Mg(II) and TC was floated into organic phase under the optimal conditions: pH=10, the floatation equipment is home-made, n-propyl alcohol as the organic solvent, sodium chloride as the separating phase reagent. The data were obtained by spectrophotometry after floatation; The linear regression equation is A=2.33×105C(mol/L)+0.2179, linear range is from 3.77×10-7mol/L to 6.32×10-5mol/L, respectively, with the correlation coefficient (r) better than 0.9997, relative recoveries is 99.7% to 100.3%, limit of detection was 4.29×10-8mol/L, The method can be applied to analyse the trace TC in water sample, the result is better.

关 键 词：Aqueous two-phase gas floatation SPECTROPHOTOMETRY HPLC TC Magnesium （II）. 

分 类 号：O657.7[理学—分析化学]