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Lead Migration in Some Acid Forest Soils under Beech in Greece

Author:
Michopoulos, P.
Source:
Journal of environmental quality 1999 v.28 no.6 pp. 1705-1708
ISSN:
0047-2425
Subject:
A horizons, Fagus, absorbance, correlation, forest soils, leaching, lead, molecular weight, organic matter, pH, solubility, Greece
Abstract:
The ratio of Pb concentrations in A and H horizons (relative migration ratio or RMR) of acid forest soils under beech in Greece was determined and assumed as an index of potential Pb migration. The pH of the A horizon was the only factor studied that significantly and negatively correlated with RMR. Decreasing solubility of organic matter in the A horizon is a possible cause for this correlation. The E4/E6 ratio (absorbance at 465 nm/absorbance at 665 nm) in water extracts from H horizon did not affect RMR, suggesting that soluble organic matter of low molecular weight derived from humic layers could not significantly cause Pb leaching from the A horizon.
Agid:
1949056