信阳师范学院学报（自然科学版）2016，Vol.29Issue(4)：584-587,4.DOI:10.3969/j.issn.1003-0972.2016.04.022
层层组装纳米金/天冬氨酸传感器对尿酸的电化学性质研究
Electrochemical Properties of Uric Acid on the Gold-aspartic Acid Sensor Assembled via a Layer-by-layer Method
摘要
Abstract
Gold-aspartic acid composite film modified electrode was fabricated via a layer by layer technique. The electrochemical properties of uric acid (UA)on the sensor were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV).The results demonstrated that the oxidation peak current of UA on the sensor was 6.5 times than that of bare electrode when PBS 7.0 acting as the supporting electrolyte.Under optimum conditions,the oxidation peak current of UA had a linear relationship as a function of its concentration ranging from 4.0×10 -7 to 1.0×10 -4 mol/L.The linear equation wasI (μA)= 0.010 - 0.022 C (μmol/L). The correlation coefficient and detection limit (R SN =3)were 0.998 and 1.0×10 -7 mol/L,respectively.The re-covery efficiency was 99.4% ~ 104.1% when the method was used for actual urine sample detection.关键词
天冬氨酸/金/尿酸/伏安法Key words
aspartic acid/gold/uric acid/voltammetry分类
化学化工引用本文复制引用
卢先春,张颖,丁婷婷,李亚辉,许春萱..层层组装纳米金/天冬氨酸传感器对尿酸的电化学性质研究[J].信阳师范学院学报（自然科学版）,2016,29(4):584-587,4.基金项目
国家自然科学基金项目(21305119) （21305119）
国家级大学生创新创业训练计划项目(201510477014) （201510477014）
