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Reyes-Loaiza V, De La Roche J, Hernandez-Renjifo E, Idárraga O, Da Silva M, Valencia DP, Ghneim-Herrera T, Jaramillo-Botero A. Laser-induced graphene electrochemical sensor for quantitative detection of phytotoxic aluminum ions (Al 3+) in soils extracts. Sci Rep 2024; 14:5772. [PMID: 38459204 PMCID: PMC10923804 DOI: 10.1038/s41598-024-56212-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 03/04/2024] [Indexed: 03/10/2024] Open
Abstract
Aluminum in its Al3+ form is a metal that inhibits plant growth, especially in acidic soils (pH < 5.5). Rapid and accurate quantitative detection of Al3+ in agricultural soils is critical for the timely implementation of remediation strategies. However, detecting metal ions requires time-consuming preparation of samples, using expensive instrumentation and non-portable spectroscopic techniques. As an alternative, electrochemical sensors offer a cost-effective and minimally invasive approach for in situ quantification of metal ions. Here, we developed and validated an electrochemical sensor based on bismuth-modified laser-induced graphene (LIG) electrodes for Al3+ quantitative detection in a range relevant to agriculture (1-300 ppm). Our results show a linear Al3+ detection range of 1.07-300 ppm with a variation coefficient of 5.3%, even in the presence of other metal ions (Pb2+, Cd2+, and Cu2+). The sensor offers a limit of detection (LOD) of 0.34 ppm and a limit of quantification (LOQ) of 1.07 ppm. We compared its accuracy for soil samples with pH < 4.8 to within 89-98% of spectroscopic methods (ICP-OES) and potentiometric titration. This technology's portability, easy to use, and cost-effectiveness make it a promising candidate for in situ quantification and remediation of Al3+ in agricultural soils and other complex matrices.
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Affiliation(s)
- Vanessa Reyes-Loaiza
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
| | - Jhonattan De La Roche
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
| | - Erick Hernandez-Renjifo
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
| | - Orlando Idárraga
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
- Department of Natural and Exact Sciences, Universidad del Valle, Cali, Valle del Cauca, 760031, Colombia
| | - Mayesse Da Silva
- Multifunctional Landscapes, Alliance Bioversity-CIAT, Cali-Palmira, Valle del Cauca, 763537, Colombia
| | - Drochss P Valencia
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
| | - Thaura Ghneim-Herrera
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia
- Department of Biological Sciences, Universidad ICESI, Cali, Valle del Cauca, 760031, Colombia
| | - Andres Jaramillo-Botero
- iOmicas Research Institute, Pontificia Universidad Javeriana, Cali, Valle del Cauca, 760031, Colombia.
- Chemistry and Chemical Engineering Division, California Institute of Technology, 1200 E California Blvd, Mail Code 139-74, Pasadena, CA, 91125, USA.
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