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Determination of Cadmium and Lead Species in the Water Column of the Jose Antonio Alzate Reservoir, Mexico
Author(s) -
Barceló Quintal Icela D.,
Solís Correa Hugo E.,
González Cortés Carmen,
Avila Pérez Pedro,
García Juan A.
Publication year - 2000
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143000x137194
Subject(s) - cadmium , environmental chemistry , chemistry , lead (geology) , water column , sedimentation , contamination , adsorption , genetic algorithm , surface water , environmental science , sediment , environmental engineering , ecology , geology , oceanography , biology , paleontology , organic chemistry , geomorphology
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.