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Energy dispersive X-ray fluorescence analysis to estimate the maximum temperature reached in burned soils from an Amazonian region.
Rocha, Débora Rodrigues; Thomaz, Edivaldo Lopes; Urbano, Alexandre; Vendrame, Pedro Rodolfo Siqueira; Melquiades, Fábio Luiz.
Afiliação
  • Rocha DR; Dep. of Physics, Univ. Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Londrina, Paraná, 86057-970, Brazil.
  • Thomaz EL; Dep. of Geography, Univ. Estadual do Centro-Oeste, Rua Simeão Camargo Varela de Sá, 03, Guarapuava, Paraná, 85040-080, Brazil.
  • Urbano A; Dep. of Physics, Univ. Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Londrina, Paraná, 86057-970, Brazil.
  • Vendrame PRS; Dep. of Geography, Univ. Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Londrina, Paraná, 86057-970, Brazil.
  • Melquiades FL; Dep. of Physics, Univ. Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Londrina, Paraná, 86057-970, Brazil.
J Environ Qual ; 52(1): 180-187, 2023 Jan.
Article em En | MEDLINE | ID: mdl-36226859
Determining the maximum temperature reached in soil during burning is important when evaluating fire intensity. Forest conversion is an ongoing process in the Amazon ecosystem. It is of utmost importance to predict fire effects on soil properties and avoid damaging environmental systems. Spectroscopic methods combined with multivariate statistics may provide chemical and mineralogical information from soil. This study aims at predicting the maximum temperature reached in Oxisols from an Amazonian region in Brazil. Slash-and-burn and pasture samples collected after fire events and unburned forest soil samples submitted to heating (250-800 °C) were investigated. Energy-dispersive X-ray fluorescence (EDXRF) was used to acquire chemical data. The experimental procedure is rapid and requires minimal sample preparation and no hazardous chemical reagents. The EDXRF data, combined with partial least squares regression, were applied in controlled-heated samples from five different sites of forest, pasture, and slash-and-burn areas. Estimated temperatures for burned samples ranged from 317 to 609 °C. Considering the instrumental advantages and the achieved results, the use of EDXRF combined with multivariate analysis is a feasible alternative technology to evaluate fire effects in soil.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Queimaduras / Incêndios Limite: Humans Idioma: En Revista: J Environ Qual Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Queimaduras / Incêndios Limite: Humans Idioma: En Revista: J Environ Qual Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos