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Copper and zinc accumulation and fractionation in a clayey Hapludox soil subject to long-term pig slurry application.
Formentini, Thiago Augusto; Mallmann, Fábio Joel Kochem; Pinheiro, Adilson; Fernandes, Cristovão Vicente Scapulatempo; Bender, Marcos Antonio; da Veiga, Milton; Dos Santos, Danilo Rheinheimer; Doelsch, Emmanuel.
Afiliación
  • Formentini TA; Department of Hydraulics and Sanitation, Federal University of Parana, 81531-980 Curitiba, PR, Brazil. Electronic address: formentini@gmail.com.
  • Mallmann FJK; CAPES Foundation, Ministry of Education of Brazil, 70040-020 Brasilia, DF, Brazil.
  • Pinheiro A; Environmental Engineering Program, Regional University of Blumenau, 89030-000 Blumenau, SC, Brazil.
  • Fernandes CVS; Department of Hydraulics and Sanitation, Federal University of Parana, 81531-980 Curitiba, PR, Brazil.
  • Bender MA; Department of Soils, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil.
  • da Veiga M; EPAGRI, P.O. Box 116, 89620-000 Campos Novos, SC, Brazil.
  • Dos Santos DR; Department of Soils, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil.
  • Doelsch E; CIRAD, UPR Recyclage et risque, F-34398 Montpellier, France.
Sci Total Environ ; 536: 831-839, 2015 Dec 01.
Article en En | MEDLINE | ID: mdl-26256309
Pig slurry (PS) recycling as fertilizer is commonly practiced as an option for minimizing livestock waste. Successive PS applications on the soil can lead to crop toxicity and environmental risk. Despite extensive investigation of macronutrient behavior, the fate of trace metals remains uncertain and only a few long-term field studies have been reported to date. This study was designed to assess the impact of 11-year continuous PS spreading on Cu and Zn accumulation and fractionation in a Brazilian clayey Hapludox soil. Three different PS application rates--50, 100 and 200m3 ha(-1)year(-1)--were monitored at six soil depths in comparison to a non-amended control soil. The modified Geological Survey of Canada sequential extraction protocol was applied. A statistically significant increase in Cu and Zn total concentration (assessed by the sum of fractions) was noted only within the 0-5 cm soil layer for the 50 and 100 m3 ha(-1) year(-1) (PS50 and PS100) treatments, and up to 10-15 cm for the 200 m3 ha(-1)year(-1) (PS200) treatment. The mass balance, determined for the 22 PS amendments over the period, confirmed the overall exogenous Cu and Zn accumulation within the surface layers. More than 70% of the natural heavy metal content was originally in the residual fraction. However, this was the only fraction not influenced by the PS amendments. After PS input, the exogenous Cu was mainly detected in the fraction bound to organic matter (66.4%) within the PS200 0-5 cm soil layer. Exogenous Zn was mainly distributed between the adsorbed fraction (36.7%) and the organic matter fraction (32.0%) within the PS200 0-5 cm layer.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Zinc / Eliminación de Residuos Líquidos / Cobre / Agricultura Tipo de estudio: Guideline Límite: Animals Idioma: En Revista: Sci Total Environ Año: 2015 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Zinc / Eliminación de Residuos Líquidos / Cobre / Agricultura Tipo de estudio: Guideline Límite: Animals Idioma: En Revista: Sci Total Environ Año: 2015 Tipo del documento: Article Pais de publicación: Países Bajos