Atrazine Used as a Tracer of Induced Recharge |
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| Authors: | Diana Duncan Darryll T. Pederson Timothy R. Shepherd James D. Can |
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| Affiliation: | James D. Carr earned his Ph.D. in analytical chemistry in 1966 at Purdue University, and is a professor in the Department of Chemistry (227 Hamilton Hall, University of Nebraska, Lincoln, NE 68588).;Diana Duncan earned an M.S. in geology, University of Nebraska 1990, and is a hydrogeologist with John Mathes &Associates Inc. (210 W. Sand Bank Rd., P.O. Box 330, Columbia, IL 62236).;Darryll T. Pederson earned his Ph.D. in 1971 at University of North Dakota, and is a professor and research hydrogeologist in the Department of Geology and the Conservation and Survey Division, respectively (304 Bessey Hall, University of Nebraska, Lincoln, NE 68588).;Timothy R. Shepherd earned his Ph.D. in analytical chemistry in 1991 at University of Nebraska and is an environmental chemist with Mantech (1304 N.E. Parvin Rd., #102, Kansas City, MO 64116). |
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| Abstract: | The city of Lincoln draws water from a well field along the banks of the Platte River in east-central Nebraska. We have been able to follow the infusion of atrazine into this well field under induced recharge. Samples of water from the river, several monitoring wells and a production well were analyzed by GC/MS and solid phase extraction and found to change in concentration over the range 0.1 and 5.0 ppb of atrazine through the spring, summer, and fall 1989. Increases in the concentration of atrazine relating to precipitation events in the Platte River Basin were observable in the well water samples and ultimately in Lincoln municipal tap water. Atrazine from the river was seen to move via induced recharge and into well field ground water and away from the river at an observable rate. The concentration of atrazine in the river is dependent upon time of year and precipitation in the river basin. |
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