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Short-term arsenic mobilization, labilization, and microbiological aspects after gasoline and diesel addition in tropical soils.
Luko-Sulato, Karen; Sulato, Everton Tiago; Podsclan, Caroline Barradas; de Souza de Oliveira, Lucia Maria; Yabuki, Lauren Nozomi Marques; Rosolen, Vania; Menegário, Amauri Antonio.
Afiliación
  • Luko-Sulato K; Centro de Estudos Ambientais, Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • Sulato ET; Programa de Pós-Graduação em Geociências e Meio Ambiente, IGCE, UNESP - Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • Podsclan CB; Centro de Estudos Ambientais, Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • de Souza de Oliveira LM; Programa de Pós-Graduação em Geociências e Meio Ambiente, IGCE, UNESP - Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • Yabuki LNM; Centro de Estudos Ambientais, Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • Rosolen V; Centro de Estudos Ambientais, Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
  • Menegário AA; Centro de Estudos Ambientais, Universidade Estadual Paulista, Rio Claro, SP, 13506-900, Brazil.
Environ Geochem Health ; 45(6): 3541-3554, 2023 Jun.
Article en En | MEDLINE | ID: mdl-36380264
The effect of the presence of gasoline and diesel on the speciation and mobility of inorganic arsenic species in tropical topsoils was investigated. Topsoil samples (n = 25) were contaminated with gasoline and diesel (500 mg kg-1) in laboratory and were incubated under unsaturated conditions and regular aeration for 21 days. Speciation analysis and chemical fractionation were performed in the pore water from control, gasoline, and diesel-contaminated soil samples. Arsenic concentrations were compared to microbiological parameters (microbial metabolic quotient and soil basal breathing) and the presence of ArsM-harboring bacteria. The spike of gasoline and diesel to the topsoils increased pore water As3+ (H3AsO3) concentration. Arsenic mobilization was lower compared to previously reported data for other sources of organic matter (biochar, litter, and a mixture of sphagnum peat moss and composted poultry manure). However, gasoline or diesel addition mobilized As fractions that were adsorbed to the solid phase, in approximately 60% of the soils. Methylation presented an important role in the As3+ regulation in control soils, which was no longer observed after gasoline or diesel addition. The quantification of the labile fractions sampled by the diffusive gradients in thin films technique showed that the increased As concentration in the gasoline or diesel-contaminated soils mostly included inert species. Dissolved organic carbon content seems to be an important control mechanism of the labile As concentration. The increase in As mobility seems to pose a more concerning scenario due to As leaching than to plant uptake.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arsénico / Contaminantes del Suelo Idioma: En Revista: Environ Geochem Health Asunto de la revista: QUIMICA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arsénico / Contaminantes del Suelo Idioma: En Revista: Environ Geochem Health Asunto de la revista: QUIMICA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos