Magnetic signature and X-ray fluorescence for mapping trace elements in soils originating from basalt and sandstone.

Autor: de Deus Ferreira E Silva J; School of Agricultural and Veterinary Sciences, São Paulo State University (FCAV-UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil. Electronic address: joao-deus.silva@unesp.br., Júnior JM; School of Agricultural and Veterinary Sciences, São Paulo State University (FCAV-UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil. Electronic address: jose.marques-junior@unesp.br., Vieira da Silva LF; University of São Paulo (USP), Luiz de Queiroz College of Agriculture (ESALQ), Department of Soil Science, Avenida Pádua Dias, 11, 13418900, Piracicaba, SP, Brazil. Electronic address: vieira.silva@usp.br., Chitlhango AP; Pedagogical University of Maputo (UP) - Mozambique, Faculty of Engineering and Technologies, Campus da Lhanguene, Av. do Trabalho, 248, Maputo, Mozambique. Electronic address: angelip700@gmail.com., Silva LS; Rondonópolis Federal University (UFR), Av. dos Estudantes 5055, 78736-900, Rondonópolis, Mato Grosso, Brazil. Electronic address: laerciosantos18@gmail.com., De Bortoli Teixeira D; Usina Santa Cruz - São Martinho Group, Fazenda Martinho, sl. 0, 14850-000, Pradópolis, São Paulo, Brazil. Electronic address: daniel.dbt@hotmail.com., Moitinho MR; School of Agricultural and Veterinary Sciences, São Paulo State University (FCAV-UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil. Electronic address: maramoitinho@gmail.com., Fernandes K; School of Agricultural and Veterinary Sciences, São Paulo State University (FCAV-UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil. Electronic address: kathleen.fernandes@unesp.br., Ferracciú Alleoni LR; University of São Paulo (USP), Luiz de Queiroz College of Agriculture (ESALQ), Department of Soil Science, Avenida Pádua Dias, 11, 13418900, Piracicaba, SP, Brazil. Electronic address: alleoni@usp.br.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Nov; Vol. 341, pp. 140028. Date of Electronic Publication: 2023 Sep 01.
DOI: 10.1016/j.chemosphere.2023.140028
Abstrakt: The knowledge of the lithological context is necessary to interpret trace elements concentrations in the soil. Soil magnetic signature (χ) and soil X-ray fluorescence (XRF) are promising approaches in the study of the spatial variability of trace elements and the environmental monitoring of soil quality. This research aimed to assess the efficiency of measurements of χ and XRF sensors for spatial characterization of zinc (Zn), manganese (Mn), and copper (Cu) contents in soils of a sandstone-basalt transitional environment, using machine learning modeling. The studied area consisted of the Western Plateau of São Paulo (WPSP), with soils originating from sandstone and basalt. A total of 253 soil samples were collected at a depth of 0.0-0.2 m. The soils were characterized by particle size and chemical analysis: organic matter (OM), cation exchange capacity (CEC), ammonium oxalate-extracted iron (Feo), sodium dithionite-citrate-bicarbonate-extracted iron (Fed), and sulfuric acid-extracted iron (Fet). Hematite (Hm), goethite (Gt), kaolinite (Kt), and gibbsite (Gb) contents were obtained by X-ray diffraction (XRD). Magnetite (Mt) and maghemite (Mh) contents were obtained by soil χ, while trace elements contents were obtained by XRF and predicted by χ. Descriptive analysis, the test of means, and correlation were performed between attributes. Zn, Mn, and Cu contents were predicted using the machine learning algorithm random forest, and the spatial variability was obtained using the ordinary kriging interpolation technique. Landscape dissections influenced iron oxides, which had the highest contents in slightly dissected environments. Trace elements contents were not influenced by landscape dissections, demonstrating that lithological knowledge is necessary to characterize trace elements in soils. The prediction models developed through the machine learning algorithm random forest showed that χ can be used to characterize trace elements. The similar spatial pattern of trace elements obtained by XRF and χ measurements confirm the applicability of these sensors for mapping it under lithological and landscape transition, aiming for sustainable strategic planning of land use and occupation.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023. Published by Elsevier Ltd.)
Databáze: MEDLINE
Externí odkaz: