Voltammetric behavior and determination of 17 beta-estradiol at multi-wall carbon nanotube-Nafion modified glassy carbon electrode.
For the purpose of low cost and sensitive electrochemical detection of 17 beta-estradiol (E2), a multi-wall carbon nanotube (MWNT)-Nafion modified electrode was fabricated. The MWNT modified electrode shows enhancement for the anodic peak current of E2 compared with the value obtained using a bare electrode. The anodic peak current measured by square wave voltammetry after 5 min open-circuit accumulation was proportional to the concentration of E2 over the range of 2.5 x 10(-7) to 10 10(-6) M, and a detection limit of 1 x 10(-8) M was obtained.
Terui
Norifumi
N
Section of Integrated Environmental Science, Research Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan.
Fugetsu
Bunshi
B
Tanaka
Shunitz
S
D015374:Biosensing Techniques; D002244:Carbon / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation / Q000379:methods*; D004553:Electric Conductivity; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D004958:Estradiol / Q000032:analysis* / Q000737:chemistry; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008839:Microelectrodes; D010100:Oxygen / Q000378:metabolism; D012680:Sensitivity and Specificity; D012996:Solutions; D013997:Time Factors
D005465:Fluorocarbon Polymers; D012996:Solutions; C040402:perfluorosulfonic acid; D004958:Estradiol; D002244:Carbon; D010100:Oxygen