期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 181, 期 1-3, 页码 845-850出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2010.05.090
关键词
Shooting ranges; Metals; Antimony; Sequential extraction
资金
- armasuisse
- Amt fur Umwelt und Energie (uwe) of the Kanton Luzern
Contamination of shooting range soils with toxic trace elements, in particular Pb and Sb, is of increasing environmental concern worldwide. We studied the extractability of Sb, and other metals ill two shooting range soils: a calcareous soil (pH 8) with low organic carbon (0.5%) and a non-calcareous soil (pH 6.3) with elevated organic carbon content (5%). Both soils contained total concentrations of around 500 mg kg(-1) Pb, 65 mg kg(-1) Cu, 100 mg kg(-1) Zn and 20 mg kg(-1) Sb. We tested the effects of Ca(OH)(2), phosphate and sodium humate amendments on metals and Sb extractability. Extracts with H(2)O and NaNO(3) contained 0.02-0.05% of the total Zn and Pb; 0.1-0.5% of total Ni and Cu and similar to 1% of total Sb. Sequential extraction procedure of Zeien and Brummer resulted in similar percentages for the sum of the two most labile fractions (F1 + F2) in two soils: 10% Pb, and 15-20% Sb. Water and NaNO(3)-extractable Sb concentrations increased after phosphate addition, but were not affected by the addition of sodium humate. The results show that leaching of Sb from shooting ranges into ground and surface waters may generate a serious environmental risk under widely different soils conditions. (C) 2010 Elsevier B.V. All rights reserved.
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