TY - JOUR
T1 - Simultaneous detection of iodine and iodide on boron doped diamond electrodes
AU - Fierro, Stéphane
AU - Comninellis, Christos
AU - Einaga, Yasuaki
N1 - Funding Information:
The authors gratefully thank the Fond National Suisse pour la Recherche Scientifique (FNSRS) for their financial support. This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) .
PY - 2013/1/15
Y1 - 2013/1/15
N2 - Individual and simultaneous electrochemical detection of iodide and iodine has been performed via cyclic voltammetry on boron doped diamond (BDD) electrodes in a 1 M NaClO4 (pH 8) solution, representative of typical environmental water conditions. It is feasible to compute accurate calibration curve for both compounds using cyclic voltammetry measurements by determining the peak current intensities as a function of the concentration. A lower detection limit of about 20 μM was obtained for iodide and 10 μM for iodine. Based on the comparison between the peak current intensities reported during the oxidation of KI, it is probable that iodide (I-) is ?rst oxidized in a single step to yield iodine (I2). The latter is further oxidized to obtain IO3-. This technique, however, did not allow for a reasonably accurate detection of iodate (IO3 -) on a BDD electrode.
AB - Individual and simultaneous electrochemical detection of iodide and iodine has been performed via cyclic voltammetry on boron doped diamond (BDD) electrodes in a 1 M NaClO4 (pH 8) solution, representative of typical environmental water conditions. It is feasible to compute accurate calibration curve for both compounds using cyclic voltammetry measurements by determining the peak current intensities as a function of the concentration. A lower detection limit of about 20 μM was obtained for iodide and 10 μM for iodine. Based on the comparison between the peak current intensities reported during the oxidation of KI, it is probable that iodide (I-) is ?rst oxidized in a single step to yield iodine (I2). The latter is further oxidized to obtain IO3-. This technique, however, did not allow for a reasonably accurate detection of iodate (IO3 -) on a BDD electrode.
KW - Boron doped diamond electrodes
KW - Electrochemical detection
KW - Iodate
KW - Iodide
KW - Iodine
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U2 - 10.1016/j.talanta.2012.10.002
DO - 10.1016/j.talanta.2012.10.002
M3 - Article
C2 - 23200355
AN - SCOPUS:84877357067
SN - 0039-9140
VL - 103
SP - 33
EP - 37
JO - Talanta
JF - Talanta
ER -