己烯雌酚在导电炭黑糊电极上的伏安行为及其在痕量检测中的应用  

Voltammetric behavior of diethylstilbestrol at conductive carbon black paste electrode and its application in trace amount detection

作　　者：李猛[1] 张旭志[2] 张艳[2] 马绍赛[2] 崔毅[2] 曲克明[2] 

机构地区：[1]大连海洋大学水产与生命学院,辽宁大连116023 [2]中国水产科学研究院黄海水产研究所,山东青岛266071

出　　处：《化学研究与应用》2012年第9期1338-1343,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21005086)资助;山东省自然科学基金项目(ZR2011BQ029)资助

摘　　要：由于具有较高的信/噪比,导电炭黑糊电极(CCBPE)具有优良的电分析化学性能。论文采用循环伏安(CV)及线性扫描伏安(LSV)等方法研究了己烯雌酚(DES)在CCBPE上的电化学行为,初步探讨了电极响应机理。在此基础上,对影响伏安响应信号的因素(诸如支持电解质种类、pH值、富集电位和富集时间等)进行了研究和优化。在优化条件下,DES的氧化峰电流与其浓度在3.1×10-9～1.55×10-7mol/L范围内呈良好的线性关系,检测限为1.55×10-9mol/L(S/N=3)。据此建立了一种快速、高灵敏的DES检测方法。应用于测定经过简单预处理的淡水渔业水样,得到了满意的结果。Conductive carbon black paste electrodes （CCBPEs）displayed excellent electroanalytical ability due to the high signal/ noise ratio. The electrochemical behavior of diethylstilbestrol（DES） was studied by cyclic vohammetry（CV） and linear sweep volta- mmetry（LSV）. The mechanism of electrode reaction was investigated preliminarily. Based on the results, some of important factors, including species of the supporting electrolyte, pH, accumulation potential and accumulation time, which had effect on the voltam- metric response signal ,were studied and optimized. Under the optimized conditions, there was a linear relationship between the oxi- dative peak value and the concentration of DES in the range of 3.1 ×10-9-1.55 × 10-7 mol/L with a detection limit of 1.55×10-9 mol/L（ signal/noise = 3 ）. Then a rapid and highly sensitive detection method for DES was established. Satisfactory results were obtained when the new method was used to measure DES in the real fishery water samples.

关 键 词：导电炭黑糊电极 己烯雌酚 伏安法 渔业环境监测 

分 类 号：O657.1[理学—分析化学]