柠檬酸修饰(CA/GC)电极对抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)的同时检测

CORC > 厦门大学 > 2012年第18卷

	柠檬酸修饰(CA/GC)电极对抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)的同时检测; Simultaneous Determinations of Ascorbic Acid, Dopamine and Uric Acid at CA/GC Electrode
	张英 ; 任旺 ; 李敏娇 ; ZHANG Ying ; REN Wang ; LI Min-Jiao
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9828.shtml
	2012-02-28
关键词	抗坏血酸多巴胺尿酸柠檬酸修饰电极 ascorbic acid dopamine uric acid citric acid modified electrode
英文摘要	研究柠檬酸(CA)修饰玻碳电极(CA/GC)在抗坏血酸(AA)、多巴胺(DA) 和尿酸(UA)混合体系中的循环伏安(CV)行为．结果表明, AA、DA和UA在CA/GC电极上氧化峰电流增大且三者氧化峰电位能彼此分离(ΔEpDA,AA=170 mV, ΔEpDA,UA=130 mV, ΔEpAA,UA=300 mV), 据此可同时检测AA、DA和UA．在优化的实验条件下, AA、DA和UA的氧化峰电流与其浓度分别在2.0×10-6~1.5×10-3 mol?L-1, 6.0×10-7~1.0×10-3 mol?L-1, 6.0×10-7~1.0×10-3 mol?L-1范围内呈线性关系．该电极重现性好, 可用于盐酸多巴胺针剂中DA、VC片剂中AA及人尿液中UA的测定．; The citric acid modified glassy carbon electrode (CA/GC) was constructed by potentiostatic technique and used for simultaneous determinations of ascorbic acid (AA), dopamine (DA) and uric acid (UA) by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The CA/GC electrode exhibits excellent electrocatalytic activity towards AA, DA and UA. The oxidation peaks are well separated with the potential differences between AA and DA, DA and UA, and AA and UA being 170, 130 and 300 mV, respectively, which is large enough to determine AA, DA and UA simultaneously. The catalytic peak currents obtained were linearly dependent on the concentrations of AA, DA and UA in the range of 2.0×10-6~1.5×10-3 mol?L-1, 6.0×10-7~1.0×10-3 mol?L-1, and 6.0×10-7~1.0×10-3 mol?L-1, respectively. The proposed sensor shows good reproducibility and may be applied practically in the determinations of AA, DA and UA.; 作者联系地址：四川理工学院化学与制药工程学院, 四川自贡, 643000; Author's Address: College of Chemical & Pharmaceutical Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China; 通讯作者E-mail：zhyrw@163.com
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58460]
专题	2012年第18卷
推荐引用方式 GB/T 7714	张英,任旺,李敏娇,等. 柠檬酸修饰(CA/GC)电极对抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)的同时检测, Simultaneous Determinations of Ascorbic Acid, Dopamine and Uric Acid at CA/GC Electrode[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9828.shtml,2012.
APA	张英,任旺,李敏娇,ZHANG Ying,REN Wang,&LI Min-Jiao.(2012).柠檬酸修饰(CA/GC)电极对抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)的同时检测.http://electrochem.xmu.edu.cn/CN/abstract/abstract9828.shtml.
MLA	张英,et al."柠檬酸修饰(CA/GC)电极对抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)的同时检测".http://electrochem.xmu.edu.cn/CN/abstract/abstract9828.shtml (2012).