Highly sensitive stripping voltammetric determination of a biomolecule, pyruvic acid in solubilized system and biological fluids

被引：13
|
作者：
Brahman, Pradeep Kumar [1 ]
Pandey, Nidhi [2 ]
Kumar, J. V. Shanmukh [1 ]
Somarouthu, Prasanthi [1 ]
Tiwari, Sandeep [3 ]
Pitre, Krishna Sadashiv [3 ]
机构：
[1] Koneru Lakshmaiah Univ, Dept Chem, Green Fileds, Guntur 522502, Andhra Pradesh, India
[2] Ojaswani Inst Management & Technol, Dept Chem, Damoh 470661, MP, India
[3] Dr Hari Singh Gour Vishwavidyalaya, Dept Chem, Chem Technol Lab, Sagar 470003, MP, India
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2016年 / 9卷
关键词：
Pyruvic acid; Square-wave adsorptive stripping voltammetry; Trace determination; Electroreduction; Cetyltrimethylammonium bromide; ELECTROCHEMICAL-BEHAVIOR; MERCURY-ELECTRODE; SURFACTANT MEDIA; DRUG;
D O I：
10.1016/j.arabjc.2014.02.003
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electroreduction and adsorption behavior of pyruvic acid were studied in the presence of cetyltrimethylammonium bromide by using cyclic voltammetry, differential pulse adsorptive stripping voltammetry and square-wave adsorptive stripping voltammetry at HMDE. The reduction peak current increases in the presence of CTAB. These fully validated sensitive and reproducible adsorptive stripping voltammetric techniques were applied for the trace determination of the pyruvic acid in biological samples. Pyruvic acid shows a single irreversible reduction peak at -1.35 V in ammonia buffer of pH 8.2 +/- 0.01. Different experimental conditions were examined by using differential pulse adsorptive stripping voltammetry and square wave adsorptive stripping voltammetry. These electroanalytical procedures enabled to determine pyruvic acid in the concentration range 0.004-0.036 mM for both DPAdSV and SWAdSV. The detection and quantification limits were found to be 6.12 x 10(-6) and 2.0 x 10(-5) mM for DPAdSV and 1.12 x 10(-7) and 4.4 x 10(-6) mM for SWAdSV, respectively. (C) 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.
引用
收藏
页码：S1897 / S1904
页数：8
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