Distribución de mercurio en fracciones de diferente tamaño de agregado en un suelo forestal podzólico de Galicia (NO España)

  1. Lucía Bibián-Nuñez 1
  2. Antía Gómez-Armesto 1
  3. Remigio Paradelo-Nuñez 1
  4. Xabier Pontevedra-Pombal 2
  5. Manuel Arias-Estévez 1
  6. Juan Carlos Nóvoa-Muñoz 1
  1. 1 Universidade de Vigo
    info

    Universidade de Vigo

    Vigo, España

    ROR https://ror.org/05rdf8595

  2. 2 Universidade de Santiago de Compostela
    info

    Universidade de Santiago de Compostela

    Santiago de Compostela, España

    ROR https://ror.org/030eybx10

Book:
Solos e Água, fontes (esgotáveis) de vida e de desenvolvimento Livro de atas: VII Congresso Ibérico das Ciências do Solo (CICS 2016) VI Congresso Nacional de Rega e Drenagem, 13-15 de Setembro de 2016, Instituto Politécnico de Beja, Beja

Publisher: Sociedade Portuguesa da Ciência do Solo (SPCS)

ISBN: 978-989-99665-0-5

Year of publication: 2016

Pages: 371-374

Type: Book chapter

DIALNET GOOGLE SCHOLAR

Abstract

The mobilization of dissolved organic matter and metal (Al-Fe)-humus complexes in podzols, allow the transport and retention of Hg in deeper soil layers, avoiding contamination of groundwaters. This study analyzes the distri- bution of total Hg (HgT) in the horizons of a forest podzol from NW Spain as a function of soil aggregate size (coarse sand, fine sand, coarse silt, fine silt and clay). Total Hg levels range from 1 to 316 ng g-1, being signifi- cantly different depending on aggregate size (F=8.110, p=0.000), with greater HgT values in the smaller aggre- gates (clay and fine silt). Total Hg levels in soil aggregates are strongly correlated to organic matter (r=0.728, p=0.000) and Al and Fe compounds (r=0.900, p=0.000), suggesting the strong affinity of HgT with these soil com- pounds and their potential role in the Hg mobilization and its enrichment in illuvial horizons.

Data source: Dialnet