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Titolo:
Geochemistry of aluminium and iron in mine soils from as Pontes, Galicia (NW Spain)
Autore:
Monterroso, C; Alvarez, E; Fernandez-Marcos, ML; Macias, F;
Indirizzi:
Univ Santiago, Fac Biol, Dept Edafol & Quim Agr, E-15706 Santiago, Spain Univ Santiago Santiago Spain E-15706 & Quim Agr, E-15706 Santiago, Spain UnivSpainiago, Escuela Politecn Super, Dept Edafol & Quim Agr, Lugo 27002,Univ Santiago Lugo Spain 27002 uper, Dept Edafol & Quim Agr, Lugo 27002,
Titolo Testata:
WATER AIR AND SOIL POLLUTION
fascicolo: 1-2, volume: 110, anno: 1999,
pagine: 81 - 102
SICI:
0049-6979(199902)110:1-2<81:GOAAII>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
PYRITE OXIDATION; SURFACE WATERS; DRAINAGE; SPECIATION; SULFATE; AREAS; AL;
Keywords:
aluminium; iron; mineral weathering; mine soils; pyrite oxidation; soil solution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Monterroso, C Univ Santiago, Fac Biol, Dept Edafol & Quim Agr, E-15706 Santiago, Spain Univ Santiago Santiago Spain E-15706 15706 Santiago, Spain
Citazione:
C. Monterroso et al., "Geochemistry of aluminium and iron in mine soils from as Pontes, Galicia (NW Spain)", WATER A S P, 110(1-2), 1999, pp. 81-102

Abstract

The geochemical processes influencing iron and aluminium mobilization and immobilization processes in mine soils are discussed. The study was carriedout on 11 soils from the As Pontes mine dump, in the process of reclamation. The soils differ in age, spoils nature, reclamation tasks and type of vegetation, covering a wide range of physico-chemical conditions. Oxalate andpyrophosphate extractable Al and Fe (Alo, Alp, Fee, Fep), and dithionite extractable Fe (Fed) were analysed. These fractions were related to the solution Al and Fe forms and contents and to other soil properties (Eh, pH, sulfides, organic matter, cation exchange capacity, and composition of the soil solution). Alo ranged between 2.2 and 111.2 cmolc kg(-1) 5 to 80% of thisAlo was organic aluminium (Alp). Fed ranged between 8.5 and 215.6 cmolc kg(-1) 20 to 70% was poorly-criystalline iron (Feo). The solution concentrations of Al and Fe ranged between <0.1 and 319.2, and between <0.1 and 46.7 mg L-1, respectively. The results showed that the spoil nature (mostly carbonaceous clays and slates differing in sulfide content) and the reclamation tasks undertaken (topsoiling, liming with fly ash) determine the forms and contents of Al and Fe in the solid phase as well as in the soil solution and also its distribution between the solid and liquid phases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 00:00:28