ALUMINUM SPECIATION IN SURFACE WATERS AND SOIL SOLUTIONS IN AREAS OF SULFIDE MINERALIZATION IN GALICIA (NW SPAIN)

被引：27

作者：

ALVAREZ, E

PEREZ, A

CALVO, R

机构：

[1] Departmento Edafologia, Facultad de Biologia, Universidad de Santiago de Compostela

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1993年 / 133卷 / 1-2期

关键词：

ALUMINUM; SPECIATION; ACIDIFIED WATERS;

D O I：

10.1016/0048-9697(93)90111-I

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The composition of soil solutions and surface waters in a mining region rich in metallic sulphides in Galicia (N.W. Spain) has been analyzed. Heavily contaminated waters showed high acidity (pH < 3.5) and levels of soluble Al greater than 2000 mumol l-1. Most of the Al is in the labile form, as Al-SO4 and Al3+ species, in contrast with areas not affected by acidification, in which the Al in solution is partitioned, between labile and non-labile forms, the latter is predominantly bound to fluorine. The activity of Al3+ in contaminated zones appears to be controlled by minerals of the jurbanite or alunite type, there being instability for gibbsite and kaolinite. In uncontaminated waters, control of Al3+ activity is by minerals of the gibbsite and/or 1:1 phyllosilicate type.

引用

页码：17 / 37

页数：21

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