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Electrochemical modified electrode with bismuth film for ultrasensitive determination of aluminum (iii)

Camila Ayala, Maria and Lorena López, Lizbeth and Jaramillo-Botero, Andres and Valencia, Drochss (2022) Electrochemical modified electrode with bismuth film for ultrasensitive determination of aluminum (iii). Journal of Electroanalytical Chemistry, 919 . Art. No. 116552. ISSN 1572-6657. doi:10.1016/j.jelechem.2022.116552.

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The quantification of heavy metals is crucial to many different applications, and particularly relevant to agriculture. Here we describe an electrochemical sensor to detect and quantify ultra-low concentrations of aluminum in solutions. High aluminum levels are associated with inadequate crop development, growth, and production. To this end, we demonstrate and validate a cheaper glassy carbon electrode modified by the electrochemical reduction of bismuth in an acetate buffer, for square wave voltammetry (SWV) of Al³⁺ in a cupferron solution 0.22 mmol L⁻¹ + ammonium sulfate buffer 0.4 mmol L⁻¹ pH 5.50, using double-potential pulse chronoamperometry. The proposed method ensures reproducible and stable surface modification of the electrode, and a sensor with linear response in the concentration range of 1.85 × 10⁻¹⁰ to 3.70×10−6 mol L⁻¹ with a detection limit of 0.025 ppb and resistance to interfering metals such as lead (Pb) cadmium (Cd) and zinc (Zn). This type of technology is amenable to industrial scaling and production and could be used for soil characterization and remediation in agriculture, as well as other applications related to food production and safety where accurate and rapid, yet cost-effective, on-site monitoring is required.

Item Type:Article
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URLURL TypeDescription Information
Jaramillo-Botero, Andres0000-0003-2844-0756
Valencia, Drochss0000-0002-9364-8134
Additional Information:© 2022 The Authors. Published by Elsevier Under a Creative Commons license - Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) Received 6 April 2022, Revised 16 June 2022, Accepted 18 June 2022, Available online 22 June 2022, Version of Record 29 June 2022. This work was partially funded by the “OMICAS program: Optimización Multiescala In-silico de Cultivos Agrícolas Sostenibles (Infraestructura y validación en Arroz y Caña de Azúcar)” Scientific Ecosystem belonging to the Colombia Científica Program, sponsored by The World Bank, The Ministry of Science, Technology and Innovation (MINCIENCIAS), ICETEX, the Colombian Ministry of Education and the Colombian Ministry of Commerce, Industry and Turism, under GRANT ID: FP44842-217-2018, OMICAS Award ID: 792-61187.
Funding AgencyGrant Number
Ministerio de Ciencia, Tecnología e Innovación (MINCIENCIAS)UNSPECIFIED
Instituto Colombiano de Crédito Educativo y Estudios Técnicos en el Exterior Mariano Ospina Pérez (ICETEX)UNSPECIFIED
Ministry of Education (Colombia)UNSPECIFIED
Ministry of Commerce, Industry and Tourism (Colmbia)FP44842-217-2018
Subject Keywords:Bismuth modified electrode; Electrochemical sensor; Aluminum detection; Double potential step chronoamperometry; Square wave voltammetry
Record Number:CaltechAUTHORS:20220705-346644000
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Official Citation:Maria Camila Ayala, Lizbeth Lorena López, Andres Jaramillo-Botero, Drochss Valencia, Electrochemical modified electrode with bismuth film for ultrasensitive determination of aluminum (iii), Journal of Electroanalytical Chemistry, Volume 919, 2022, 116552, ISSN 1572-6657,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115336
Deposited By: George Porter
Deposited On:08 Jul 2022 22:55
Last Modified:25 Jul 2022 23:14

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