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Determination of Cadmium and Lead Species in the Water Column of the Jose Antonio Alzate Reservoir, Mexico

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Abstract:

Contamination by dissolved cadmium and lead was studied at two different depths at four sites of the Jose Antonio Alzate Reservoir in central Mexico. Total dissolved levels were found to be between 0.3 and 0.6 μg/L for cadmium and between 2.1 and 4.8 μg/L for lead. Chemical dissolved speciation showed primarily inorganic lead species, whereas cadmium species were detected in both inorganic and organic fractions. Most of the lead and cadmium species were removable by cationic exchange. No specific distribution trend was noted for the metal species in the reservoir, although a difference between the surface and bottom samples resulted from physical and chemical factors. Sedimentation and adsorption seemed to help with the natural scavenging process of reservoir water metals.

Keywords: CONTAMINATION; DISSOLVED CHEMICAL SPECIATION; HEAVY METALS; WATER RESERVOIR

Document Type: Research Article

DOI: https://doi.org/10.2175/106143000X137194

Publication date: 2000-03-01

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    Water Environment Research� (WER�) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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