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Sensitive electrochemical detection of arsenic (III) using gold nanoparticle modified carbon nanotubes via anodic stripping voltammetry.
Anal Chim Acta. 2008 Jul 14; 620(1-2):44-9.AC

Abstract

Gold nanoparticles were deposited electrolessly on multiwalled carbon nanotubes (CNTs) via in situ reduction of HAuCl(4) by NaBH(4). The resulting gold covered nanotubes were immobilised onto the surface of a glassy carbon electrode via evaporation of a suspension in chloroform. Anodic stripping voltammetry was performed with the modified electrode in As(III) solutions. A limit of detection (LOD based on 3 sigma) of 0.1 microgL(-1) was obtained but more importantly a sensitivity of 1985 microA microM(-1) was obtained with square wave voltammetry (SWV) in an optimised system with a deposition time of 120s. These values, particularly the high sensitivity compare favourably with previously reported methods in the area of electrochemical arsenic detection.

Authors+Show Affiliations

Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, OX1 3QZ, United Kingdom.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18558122

Citation

Xiao, Lei, et al. "Sensitive Electrochemical Detection of Arsenic (III) Using Gold Nanoparticle Modified Carbon Nanotubes Via Anodic Stripping Voltammetry." Analytica Chimica Acta, vol. 620, no. 1-2, 2008, pp. 44-9.
Xiao L, Wildgoose GG, Compton RG. Sensitive electrochemical detection of arsenic (III) using gold nanoparticle modified carbon nanotubes via anodic stripping voltammetry. Anal Chim Acta. 2008;620(1-2):44-9.
Xiao, L., Wildgoose, G. G., & Compton, R. G. (2008). Sensitive electrochemical detection of arsenic (III) using gold nanoparticle modified carbon nanotubes via anodic stripping voltammetry. Analytica Chimica Acta, 620(1-2), 44-9. https://doi.org/10.1016/j.aca.2008.05.015
Xiao L, Wildgoose GG, Compton RG. Sensitive Electrochemical Detection of Arsenic (III) Using Gold Nanoparticle Modified Carbon Nanotubes Via Anodic Stripping Voltammetry. Anal Chim Acta. 2008 Jul 14;620(1-2):44-9. PubMed PMID: 18558122.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sensitive electrochemical detection of arsenic (III) using gold nanoparticle modified carbon nanotubes via anodic stripping voltammetry. AU - Xiao,Lei, AU - Wildgoose,Gregory G, AU - Compton,Richard G, Y1 - 2008/05/16/ PY - 2007/11/07/received PY - 2008/04/23/revised PY - 2008/05/09/accepted PY - 2008/6/19/pubmed PY - 2008/7/18/medline PY - 2008/6/19/entrez SP - 44 EP - 9 JF - Analytica chimica acta JO - Anal Chim Acta VL - 620 IS - 1-2 N2 - Gold nanoparticles were deposited electrolessly on multiwalled carbon nanotubes (CNTs) via in situ reduction of HAuCl(4) by NaBH(4). The resulting gold covered nanotubes were immobilised onto the surface of a glassy carbon electrode via evaporation of a suspension in chloroform. Anodic stripping voltammetry was performed with the modified electrode in As(III) solutions. A limit of detection (LOD based on 3 sigma) of 0.1 microgL(-1) was obtained but more importantly a sensitivity of 1985 microA microM(-1) was obtained with square wave voltammetry (SWV) in an optimised system with a deposition time of 120s. These values, particularly the high sensitivity compare favourably with previously reported methods in the area of electrochemical arsenic detection. SN - 1873-4324 UR - https://www.unboundmedicine.com/medline/citation/18558122/Sensitive_electrochemical_detection_of_arsenic__III__using_gold_nanoparticle_modified_carbon_nanotubes_via_anodic_stripping_voltammetry_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0003-2670(08)00932-X DB - PRIME DP - Unbound Medicine ER -