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Concentrations of select dissolved trace elements and anthropogenic organic compounds in the Mississippi River and major tributaries during the summer of 2012 and 2013
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Concentrations of select dissolved trace elements and anthropogenic organic compounds in the Mississippi River and major tributaries during the summer of 2012 and 2013
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Journal Article
Concentrations of select dissolved trace elements and anthropogenic organic compounds in the Mississippi River and major tributaries during the summer of 2012 and 2013
2017
Overview
The Mississippi River drainage basin includes the Illinois, Missouri, Ohio, Tennessee, and Arkansas rivers. These rivers drain areas with different physiography, population centers, and land use, with each contributing a different suites of metals and wastewater contaminants that can affect water quality. In July 2012, we determined 18 elements (Be, Rb, Sr, Cd, Cs, Ba, Tl, Pb, Mg, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) and chlorophyll-a (Chl-a) in the five major tributaries and in the Upper Mississippi River. The following summer, we determined both trace elements and 25 trace organic compounds at 10 sites in a longitudinal study of the main stem of the Mississippi River from Grafton, Illinois to Natchez, Mississippi. We detected wastewater contaminants, including pharmaceuticals and endocrine disrupting compounds, throughout the river system, with the highest concentrations occurring near urban centers (St. Louis and Memphis). Concentrations were highest for atrazine (673 ng L
−1
), DEET (540 ng L
−1
), TCPP (231 ng L
−1
), and caffeine (202 ng L
−1
). The Illinois, Missouri, and Yazoo rivers, which drain areas with intense agriculture, had relatively high concentrations of Chl-a and atrazine. However, the Ohio River delivered higher loads of contaminants to the Mississippi River, including an estimated 177 kg day
−1
of atrazine, due to higher flow volumes. Concentrations of heavy metals (Ni, V, Co, Cu, Cd, and Zn) were relatively high in the Illinois River and low in the Ohio River, although dissolved metal concentrations were below US EPA maximum contaminant levels for surface water. Multivariate analysis demonstrated that the rivers can be distinguished based on elemental and contaminant profiles.
Publisher
Springer International Publishing,Springer Nature B.V
Subject
/ aluminum
/ Atmospheric Protection/Air Quality Control/Air Pollution
/ Atrazine
/ barium
/ Basins
/ Cadmium
/ Caffeine
/ Canals
/ chromium
/ cobalt
/ Copper
/ deet
/ drugs
/ Earth and Environmental Science
/ Ecology
/ Endocrine Disruptors - analysis
/ endocrine-disrupting chemicals
/ Illinois
/ iron
/ Land use
/ lead
/ Metals
/ Monitoring/Environmental Analysis
/ nickel
/ Organic Chemicals - analysis
/ Rivers
/ rubidium
/ Seasons
/ summer
/ United States Environmental Protection Agency
/ vanadium
/ Water Pollutants, Chemical - analysis
/ zinc
