Simultaneous determination of epinephrine, ascorbic acid and folic acid using TX-100 modified carbon paste electrode: A cyclic voltammetric study

Chandrashekar, B. N.1,2; Swamy, B. E. Kumara2; Gururaj, K. J.2,3; Cheng, Chun1

2017-04

10.1016/j.molliq.2017.02.029

JOURNAL OF MOLECULAR LIQUIDS   影响因子和分区

0167-7322

1873-3166

A sensitive and selective determination method for epinephrine (EN) was developed by immobilization of TX 100 surfactant on the bare carbon paste electrode. Scanning electron microscopy (SEM) and cyclic voltammetry (CV) were employed to characterize the modified surfaces. The catalytic activity of the modified electrode for the oxidation of EN was determined using the cyclic voltammograms recorded at sufficient different scan rates. The effect of the solution pH on the voltammetric response of EN was examined using phosphate buffer solution. This method enabled the determination of EN in the presence of interfering species, including ascorbic acid (AA) and folic acid (FA). in a phosphate buffer solution (pH 7.0). The TX-100/CPE demonstrated a good performance for the determination of EN in the concentration range from 10 mu M to 50 mu M, with a detection limit of 1 x 10(-6) M. The application was conducted for the determination of EN in a human serum sample and the sensor was proven to be rapid, has excellent selectivity and repeatability. (C) 2017 Elsevier B.V. All rights reserved.

Epinephrine Ascorbic acid Folic acid Phosphate buffer solution TX-100/CPE Cyclic voltammetry

SCI ; EI

英语

第一

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:000399507300048

ELSEVIER SCIENCE BV

20170803364749

Carbon ; Catalyst activity ; Catalytic oxidation ; Cyclic voltammetry ; Electrodes ; Scanning electron microscopy

Electrochemistry:801.4.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1

CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Key Lab Nanoimprint Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Kuvempu Univ, Dept PC Studies & Res Ind Chem, Shimogu 577451, Karnataka, India
3.Ctr Univ Ciencias Exactas & Ingn, Dept Ingn Proyectos, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jal, Mexico

Chandrashekar, B. N.,Swamy, B. E. Kumara,Gururaj, K. J.,et al. Simultaneous determination of epinephrine, ascorbic acid and folic acid using TX-100 modified carbon paste electrode: A cyclic voltammetric study[J]. JOURNAL OF MOLECULAR LIQUIDS,2017,231:379-385.

Chandrashekar, B. N.,Swamy, B. E. Kumara,Gururaj, K. J.,&Cheng, Chun.(2017).Simultaneous determination of epinephrine, ascorbic acid and folic acid using TX-100 modified carbon paste electrode: A cyclic voltammetric study.JOURNAL OF MOLECULAR LIQUIDS,231,379-385.

Chandrashekar, B. N.,et al."Simultaneous determination of epinephrine, ascorbic acid and folic acid using TX-100 modified carbon paste electrode: A cyclic voltammetric study".JOURNAL OF MOLECULAR LIQUIDS 231(2017):379-385.