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Comparative Assessment of the Physico-Chemical and Bacteriological Qualities of Selected Streams in Louisiana
Molecular Toxicology Research Laboratory, NIH-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, P.O. Box 18540, Jackson, Mississippi, USA
Louisiana State University Agricultural Experiment Station, Hill Farm Research Station, 11959 Highway 9, Homer, Louisiana, USA
* Author to whom correspondence should be addressed.
Received: 15 November 2004; Accepted: 6 February 2005 / Published: 30 April 2005
Abstract: The objective of this research was to compare the chemical/physical parameters and bacterial qualities of selected surface water streams in Louisiana, including a natural stream (control) and an animal waste related stream. Samples were collected and analyzed for fecal coliforms. Fecal coliforms isolated from these samples were identified to the species level. Chemical analysis was performed following standard test protocols (LaMotte 2002). An analysis of biological oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total dissolved solids (TDS), conductivity, pH, temperature, ammonia nitrogen, nitrate nitrogen, iron, copper, phosphate, potassium, sulfate, turbidity, zinc and bacterial levels was performed following standard test protocols as presented in Standard Methods for the Examination of Water and Wastewater . Results of the comparisons of the various surface water streams showed that phosphate levels, according to Mitchell and Stapp, were considered good for Lake Claiborne (control) and Bayou Dorcheat. The levels were found to be .001 mg/L and .007 mg/L respectively. Other streams associated with animal waste, had higher phosphate levels of 2.07 mg/L and 2.78 mg/L, respectively. Conductivity and total dissolved solids (TDS) levels were the lowest in Lake Claiborne and highest in the Hill Farm Research Station stream. It can be concluded from the data that some bacterial levels and various nutrient levels can be affected in water resources due to non-point source pollution. Many of these levels will remain unaffected.
Keywords: Non-point source pollution; fecal coliform; total organic carbon (TOC); biological oxygen demand (BOD); chemical oxygen demand (COD)
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Hill, D.D.; Owens, W.E.; Tchounwou, P.B. Comparative Assessment of the Physico-Chemical and Bacteriological Qualities of Selected Streams in Louisiana. Int. J. Environ. Res. Public Health 2005, 2, 94-100.
Hill DD, Owens WE, Tchounwou PB. Comparative Assessment of the Physico-Chemical and Bacteriological Qualities of Selected Streams in Louisiana. International Journal of Environmental Research and Public Health. 2005; 2(1):94-100.
Hill, Dagne D.; Owens, William E.; Tchounwou, Paul B. 2005. "Comparative Assessment of the Physico-Chemical and Bacteriological Qualities of Selected Streams in Louisiana." Int. J. Environ. Res. Public Health 2, no. 1: 94-100.