Laser-induced graphene electrochemical sensor for quantitative detection of phytotoxic aluminum ions (Al3+) in soils extracts

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dc.creatorReyes-Loaiza, Vanessa
dc.creatorDe La Roche, Jhonattan
dc.creatorHernandez-Renjifo, Erick
dc.creatorIdárraga, Orlando
dc.creatorSilva, Mayesse Aparecida da
dc.creatorValencia, Drochss P.
dc.creatorGhneim-Herrera, Thaura
dc.creatorJaramillo-Botero, Andres
dc.date2024-03-08
dc.date2024-10-15T12:27:54Z
dc.date2024-10-15T12:27:54Z
dc.date.accessioned2026-06-27T13:26:28Z
dc.descriptionAluminum in its Al 3+ form is a metal that inhibits plant growth, especially in acidic soils (pH < 5.5). Rapid and accurate quantitative detection of Al 3+ 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 Al 3+ quantitative detection in a range relevant to agriculture (1–300 ppm). Our results show a linear Al 3+ detection range of 1.07–300 ppm with a variation coefficient of 5.3%, even in the presence of other metal ions (Pb 2+ , Cd 2+ , and Cu 2+ ). 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 Al 3+ in agricultural soils and other complex matrices.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/155354
dc.identifier.urihttp://hdl.handle.net/123456789/59469
dc.languageen
dc.publisherNature Portfolio
dc.rightsOpen Access
dc.sourceReyes-Loaiza, V.; De La Roche, J.; Hernandez-Renjifo, E.; Idárraga, O.; Da-Silva, M.A.; Valencia, D.P.; Ghneim-Herrera, T.; Jaramillo-Botero, A. (2024) Laser-induced graphene electrochemical sensor for quantitative detection of phytotoxic aluminum ions (Al3+) in soils extracts. Scientific Reports 14: 5772. ISSN: 2045-2322
dc.subjectinnovation
dc.subjectacid soils
dc.subjecttechnology
dc.subjectdetection
dc.subjectaluminium
dc.subjections
dc.subjectsensors
dc.titleLaser-induced graphene electrochemical sensor for quantitative detection of phytotoxic aluminum ions (Al3+) in soils extracts
dc.typeJournal Article

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