Size Fractions of Heavy Metals in Waters

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Abstract

The heavy metal content of river water samples with 12 and 15 mg/l dry matter of seston is increased to 400 … 3900μg/l by the addition of inorganic heavy metal salts, and after three days the distribution of the heavy metals is determined by fractional filtration (8, 3, 1.2, 0.8, 0.65, 0.45 and 0.22 μm pore size). More than 80% of Ni, Co and Mn are found in the fraction 8 μm as well as 40 and 25%, resp., in 8 μm. The influence of specific parameters of water quality as pH-value and seston concentration on the distribution requires further investigations.