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Uptake of Inorganic Mercury by Bed Sediments¹

ABSTRACT

The kinetics of uptake of inorganic mercury as mercuric chloride by a variety of freshwater river sediment types typical of Ottawa River sediments were studied to determine the influence of mercury concentration in water, hydrodynamic effects, sediment depth, aerobic or anaerobic conditions, and two types of water. Uptake appears to depend strongly on concentration of mercury in water and water velocity, and not on sediment depth or water type. No significant difference in uptake rates was observed between aerobic and anaerobic conditions during the 10 days studied.

Key Words: fresh water • river

¹ This paper reports research carried out as part of the Ottawa River Project, a joint study by the National Research Council Laboratories and the University of Ottawa. Issued as National Research Council of Canada publication No. 13857.

² Assistant Research Officer, Principal Research Officer, respectively.

Received for publication September 17, 1973.