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Lead Migration in Some Acid Forest Soils under Beech in Greece
Author(s) -
Michopoulos P.
Publication year - 1999
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1999.00472425002800060003x
Subject(s) - beech , absorbance , soil water , leaching (pedology) , organic matter , chemistry , environmental chemistry , horizon , humic acid , soil horizon , soil science , environmental science , botany , biology , chromatography , mathematics , organic chemistry , fertilizer , geometry
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.