还原菌修饰碳糊电极研究及对微量金的测定  

Electrochemical Determination of Trace Amouns of Gold(Ⅲ)by Cathodic Sptripping Voltammetry Using a Carborn Paste Electroele Modified with Bacteria

作　　者：胡荣宗[1] 许浩[1] 傅锦坤[1] 胡文云[1] 陈衍珍[1] 

机构地区：[1]厦门大学化学系固体表面物理化学国家重点实验室国家教委材料和生命过程分析科学开放研究实验室

出　　处：《电化学》1998年第3期323-327,共5页Journal of Electrochemistry

基　　金：国家自然科学基金

摘　　要：研究用细菌修饰的碳糊电极对金离子的响应特性，并应用该电极检测水溶液中的金离子，金离子浓度在１０～１００μｇ／ｍＬ．呈线性关系，重现性为３．４％，检测限达１ｎｇ／ｍＬ．电极具有制备简单，灵敏度高等优点．文中还讨论了金离子在还原菌修饰的碳糊电极上的还原机理．An electrochemically pretreated carbon paste electrode modified with bacteria has been studied and used for determination of trace amounts of gold(Ⅲ). A detection limit of 1 ng/mL was obtained by applying cathodic stripping valtammetry. There is a linear relationship between the concentration and peak height in the range of 10～100 μg/mL. The ralative standard deviation of the response to 84.7 μg/mL Au(Ⅲ) is 3.43%.

关 键 词：金 还原菌 修饰电极 碳糊电极 分析 

分 类 号：O614.123[理学—无机化学]