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Electrochemical detection of arsenic(III) using iridium-implanted boron-doped diamond electrodes.
Anal Chem. 2006 Sep 15; 78(18):6291-8.AC

Abstract

Iridium-modified, boron-doped diamond electrodes fabricated by an ion implantation method have been developed for electrochemical detection of arsenite (As(III)). Ir+ ions were implanted with an energy of 800 keV and a dose of 10(15) ion cm(-2). An annealing treatment at 850 degrees C for 45 min in H2 plasma (80 Torr) was required to rearrange metastable diamond produced by an implantation process. Characterization was investigated by SEM, AFM, Raman, and X-ray photoelectron spectroscopy. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. The electrodes exhibited high catalytic activity toward As(III) oxidation with the detection limit (S/N = 3), sensitivity, and linearity of 20 nM (1.5 ppb), 93 nA microM(-1) cm(-2), and 0.999, respectively. The precision for 10 replicate determinations of 50 microM As(III) was 4.56% relative standard deviation. The advantageous properties of the electrodes were its inherent stability with a very low background current. The electrode was applicable for analysis of spiked arsenic in tap water containing a significant amount of various ion elements. The results indicate that the metal-implanted method could be promising for controlling the electrochemical properties of diamond electrodes.

Authors+Show Affiliations

Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 112-0031, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16970300

Citation

Ivandini, Tribidasari A., et al. "Electrochemical Detection of arsenic(III) Using Iridium-implanted Boron-doped Diamond Electrodes." Analytical Chemistry, vol. 78, no. 18, 2006, pp. 6291-8.
Ivandini TA, Sato R, Makide Y, et al. Electrochemical detection of arsenic(III) using iridium-implanted boron-doped diamond electrodes. Anal Chem. 2006;78(18):6291-8.
Ivandini, T. A., Sato, R., Makide, Y., Fujishima, A., & Einaga, Y. (2006). Electrochemical detection of arsenic(III) using iridium-implanted boron-doped diamond electrodes. Analytical Chemistry, 78(18), 6291-8.
Ivandini TA, et al. Electrochemical Detection of arsenic(III) Using Iridium-implanted Boron-doped Diamond Electrodes. Anal Chem. 2006 Sep 15;78(18):6291-8. PubMed PMID: 16970300.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical detection of arsenic(III) using iridium-implanted boron-doped diamond electrodes. AU - Ivandini,Tribidasari A, AU - Sato,Rika, AU - Makide,Yoshihiro, AU - Fujishima,Akira, AU - Einaga,Yasuaki, PY - 2006/9/15/pubmed PY - 2007/4/27/medline PY - 2006/9/15/entrez SP - 6291 EP - 8 JF - Analytical chemistry JO - Anal Chem VL - 78 IS - 18 N2 - Iridium-modified, boron-doped diamond electrodes fabricated by an ion implantation method have been developed for electrochemical detection of arsenite (As(III)). Ir+ ions were implanted with an energy of 800 keV and a dose of 10(15) ion cm(-2). An annealing treatment at 850 degrees C for 45 min in H2 plasma (80 Torr) was required to rearrange metastable diamond produced by an implantation process. Characterization was investigated by SEM, AFM, Raman, and X-ray photoelectron spectroscopy. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. The electrodes exhibited high catalytic activity toward As(III) oxidation with the detection limit (S/N = 3), sensitivity, and linearity of 20 nM (1.5 ppb), 93 nA microM(-1) cm(-2), and 0.999, respectively. The precision for 10 replicate determinations of 50 microM As(III) was 4.56% relative standard deviation. The advantageous properties of the electrodes were its inherent stability with a very low background current. The electrode was applicable for analysis of spiked arsenic in tap water containing a significant amount of various ion elements. The results indicate that the metal-implanted method could be promising for controlling the electrochemical properties of diamond electrodes. SN - 0003-2700 UR - https://www.unboundmedicine.com/medline/citation/16970300/Electrochemical_detection_of_arsenic_III__using_iridium_implanted_boron_doped_diamond_electrodes_ L2 - https://doi.org/10.1021/ac0519514 DB - PRIME DP - Unbound Medicine ER -