"The continuous discharge of lead-zinc mine and mill wastewater into some streams in southeastern Missouri may alter the ecology of those streams. A field and laboratory study was conducted to evaluate the potential pollution problem. Bee Fork Creek, the first stream in that area to receive tailings from mining operations, was selected for this study and periodically surveyed. Laboratory tests included static bioassays of lead, zinc, and copper, and the mode of action of the metals was investigated through post-mortem examination of the experimental fish. The test animals used in the bioassays were bluegill sunfish (Lepomis macrochirus, Rafinesque). The heavy metals were found to be more toxic in water of low pH and alkalinity. Bluegills which died in the test solutions assayed showed destruction of the gill epithelium and penetration of the metals with gill cells. Analyses on the stream water revealed that noticeable changes in water quality have occurred, but although there was a rise in the concentrations of the heavy metals, these concentrations are still below the limits of acute toxicity. Significant ecological changes were observed downstream from the tailings discharge by the development of a profuse bacterial and algal growth. Recommendations fur future study were made with respect to the various observed pollution effects"--Abstract, page ii.
Wixson, Bobby G.
Huang, Ju-Chang, 1941-2018
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
United States. Office of Water Resources Research
United States. Agency for International Development
University of Missouri--Rolla
viii, 82 pages
© 1969 Anthony Ralph de Alonso Handler, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Water -- Pollution -- Environmental aspects -- Missouri
Water quality bioassay -- Missouri
Aquatic organisms -- Effect of water pollution on
Tailings (Metallurgy) -- Environmental aspects
Heavy metals -- Environmental aspects
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b1067375~S5
Handler, Anthony Ralph de Alonso, "Some effects of lead-zinc mining wastewater on a stream environment" (1969). Masters Theses. 5340.