Sensitive Detection of Capsaicin by Adsorptive Stripping Voltammetry at a Boron-Doped Diamond Electrode in the Presence of Sodium Dodecylsulfate

2011 ◽  
Vol 23 (10) ◽  
pp. 2491-2497 ◽  
Author(s):  
Yavuz Yardım
2013 ◽  
Vol 11 (10) ◽  
pp. 1674-1681 ◽  
Author(s):  
Pınar Pınar ◽  
Yavuz Yardım ◽  
Zühre Şentürk

AbstractThis paper examined for the first time, the possibilities of the usage of a boron-doped diamond electrode for the redox behavior of rutin using cyclic and adsorptive stripping voltammetry. The cyclic voltammograms showed a pair of redox peaks at lower potentials followed by an irreversible oxidation peak at higher positive potential. Using square-wave adsorptive stripping voltammetry, the compound yielded a well-defined voltammetric response in Britton-Robinson buffer, pH 4.0 at +0.48 V (vs. Ag/AgCl) (after 60 s accumulations at a fixed potential of 0.2 V). The calibration curve was linear in the concentration range from 0.01 µg mL−1 to 0.1 µg mL−1 (1.64×10−8 M − 1.64×10−7 M). A detection limit of 0.0017 µg mL−1 (2.78×10−9 M) was observed without any chemical modifications and electrochemical surface pretreatments. As an example, the practical applicability of boron-doped diamond electrode was tested with the measurement of rutin in dietary supplement products.


2010 ◽  
Vol 59 (11) ◽  
pp. 1035-1041
Author(s):  
Shigeo Taguchi ◽  
Naoki Surugaya ◽  
Akira Kurosawa ◽  
Toshiaki Hiyama ◽  
Tatsuhiko Tanaka

Sign in / Sign up

Export Citation Format

Share Document