L-半胱氨酸席夫碱铜(Ⅱ)配合物自组装金电极的制备及对大黄酸的测定  

The Preparation of L-Cysteine Schiff Base Copper(Ⅱ) Complexes Assembled Gold Electrode and Its Application in Determination of Rhein

作　　者：夏金虹[1] 刘峥[2] 刘宝玉[2] 王永燎[2] 

机构地区：[1]桂林电子科技大学电子工程学院,广西桂林541004 [2]桂林理工大学化学与生物工程系,广西桂林541004

出　　处：《分析科学学报》2010年第5期526-530,共5页Journal of Analytical Science

基　　金：广西科学基金(桂科自0832241;桂科青0728088)

摘　　要：本文研究了3,5-二溴水杨醛缩半胱氨酸席夫碱铜(Ⅱ)配合物自组装金电极(BrCSSBCu/Au)催化大黄酸氧化的电化学行为,以Fe(CN)64-/3-溶液为电化学探针研究BrCSSBCu/Au电极的电化学性质。利用差示脉冲吸附溶出伏安法测定,氧化峰电流与大黄酸浓度在2.0×10-5～6.0×10-5mol.L-1范围内呈良好的线性关系,相关系数为0.9996,检出限为1.5×10-6mol.L-1。电极用于大黄药物中大黄酸的测定,结果满意。In this paper,the electrochemical behaviors of rhein at the 3,5-dibromo-salicylaldehyde semi-histidine Schiff base copper（Ⅱ）complexes assembled gold electrode（BrCSSBCu/Au）were studied using Fe（CN）4-/3-6 as the electrochemical probe.The differential pulse adsorptive stripping voltammetric detection results show that there is a good linear relationship between the oxidation peak of rhein and its concentration in the range of 2.0×10-5 mol5L-1 to 6.0×10-5 mol5L-1 with the coefficient of 0.9996 and a detection limit of 1.5×10-6 mol/L.The modified electrode has been used to determine the rhein in the drugs with good results.

关 键 词：L-半胱氨酸席夫碱铜(Ⅱ)配合物 自组装 差示脉冲吸附溶出伏安法 大黄酸 

分 类 号：O657.15[理学—分析化学]