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Method development for the determination of arsenic by sequential injection/anodic stripping voltammetry using long-lasting gold-modified screen-printed carbon electrode.
Talanta. 2013 Nov 15; 116:1018-25.T

Abstract

An automated method has been developed for determining the concentration of inorganic arsenic. The technique uses sequential injection/anodic stripping voltammetry with a long-lasting gold-modified screen-printed carbon electrode. The long-lasting gold electrode was electrochemically deposited onto a screen-printed carbon electrode at a potential of -0.5 V vs. Ag/AgCl in a supporting electrolyte solution of 1M hydrochloric acid. Under optimal conditions and the applied potentials, the electrode demonstrated that it can be used for a long time without a renewal process. The linear range for the determination of arsenic(III) was 1-100 μg L(-1), and the limit of detection (LOD) in standard solutions was as low as 0.03 μg L(-1) for a deposition time of 120 s and sample volume of 1 mL. This method was used to determine the concentration of arsenic(III) in water samples with satisfactory results. The LOD in real samples was found to be 0.5 μg L(-1). In addition, speciation between arsenic(III) and arsenic(V) has been achieved with the proposed method using deposition potentials of -0.5 V and -1.5 V for the determination of the arsenic(III) concentration and the total arsenic concentration, respectively; the results were acceptable. The proposed method is an automated system that offers a less expensive alternative for determining trace amounts of inorganic arsenic.

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Authors+Show Affiliations

Punrat E
Electrochemistry and Optical Spectroscopy Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330 Thailand; Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka 1-1-1, Kitaku, Okayama 700-8530, Japan.
Chuanuwatanakul S
No affiliation info available
Kaneta T
No affiliation info available
Motomizu S
No affiliation info available
Chailapakul O
No affiliation info available

MeSH

ArsenicCarbonElectrochemical TechniquesElectrodesFlow Injection AnalysisFresh WaterGoldLimit of DetectionOxidation-ReductionPrintingSilver CompoundsWater Pollutants, Chemical

Pub Type(s)

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

Language

eng

PubMed ID

24148510

Citation

Punrat, Eakkasit, et al. "Method Development for the Determination of Arsenic By Sequential Injection/anodic Stripping Voltammetry Using Long-lasting Gold-modified Screen-printed Carbon Electrode." Talanta, vol. 116, 2013, pp. 1018-25.
Punrat E, Chuanuwatanakul S, Kaneta T, et al. Method development for the determination of arsenic by sequential injection/anodic stripping voltammetry using long-lasting gold-modified screen-printed carbon electrode. Talanta. 2013;116:1018-25.
Punrat, E., Chuanuwatanakul, S., Kaneta, T., Motomizu, S., & Chailapakul, O. (2013). Method development for the determination of arsenic by sequential injection/anodic stripping voltammetry using long-lasting gold-modified screen-printed carbon electrode. Talanta, 116, 1018-25. https://doi.org/10.1016/j.talanta.2013.08.030
Punrat E, et al. Method Development for the Determination of Arsenic By Sequential Injection/anodic Stripping Voltammetry Using Long-lasting Gold-modified Screen-printed Carbon Electrode. Talanta. 2013 Nov 15;116:1018-25. PubMed PMID: 24148510.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Method development for the determination of arsenic by sequential injection/anodic stripping voltammetry using long-lasting gold-modified screen-printed carbon electrode. AU - Punrat,Eakkasit, AU - Chuanuwatanakul,Suchada, AU - Kaneta,Takashi, AU - Motomizu,Shoji, AU - Chailapakul,Orawon, Y1 - 2013/08/23/ PY - 2013/05/13/received PY - 2013/08/19/revised PY - 2013/08/19/accepted PY - 2013/10/24/entrez PY - 2013/10/24/pubmed PY - 2014/6/4/medline KW - Anodic stripping voltammetry KW - Arsenic determination KW - Long-lasting electrode KW - Screen-printed carbon electrode KW - Sequential injection analysis SP - 1018 EP - 25 JF - Talanta JO - Talanta VL - 116 N2 - An automated method has been developed for determining the concentration of inorganic arsenic. The technique uses sequential injection/anodic stripping voltammetry with a long-lasting gold-modified screen-printed carbon electrode. The long-lasting gold electrode was electrochemically deposited onto a screen-printed carbon electrode at a potential of -0.5 V vs. Ag/AgCl in a supporting electrolyte solution of 1M hydrochloric acid. Under optimal conditions and the applied potentials, the electrode demonstrated that it can be used for a long time without a renewal process. The linear range for the determination of arsenic(III) was 1-100 μg L(-1), and the limit of detection (LOD) in standard solutions was as low as 0.03 μg L(-1) for a deposition time of 120 s and sample volume of 1 mL. This method was used to determine the concentration of arsenic(III) in water samples with satisfactory results. The LOD in real samples was found to be 0.5 μg L(-1). In addition, speciation between arsenic(III) and arsenic(V) has been achieved with the proposed method using deposition potentials of -0.5 V and -1.5 V for the determination of the arsenic(III) concentration and the total arsenic concentration, respectively; the results were acceptable. The proposed method is an automated system that offers a less expensive alternative for determining trace amounts of inorganic arsenic. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/24148510/Method_development_for_the_determination_of_arsenic_by_sequential_injection/anodic_stripping_voltammetry_using_long_lasting_gold_modified_screen_printed_carbon_electrode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(13)00688-7 DB - PRIME DP - Unbound Medicine ER -