Kansas Water Science Center
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Multivariate Correlation Between Concentrations of Selected Herbicides and Derivatives in Outflows from Selected U.S. Midwestern ReservoirsBy R. Tauler, D. Barcelš, and E.M. ThurmanAbstractMultivariate correlations between the concentrations of selected herbicides and herbicide derivatives in outflows from selected reservoirs in the Midwestern United States for April 1992 through September 1993 were investigated using principal component analysis (PCA) and multivariate curve resolution (MCR). Two independent sources for alachlor ethanesulfonic acid, one major source related to spring flush and seasonal runoff and another minor source related to groundwater, were identified using PCA. Results of MCR provided a semiquantitative interpretation of the environmental sources of the observed herbicide concentrations in reservoir outflows and allowed the examination of their temporal and geographical distributions. Samples with higher herbicide concentrations were collected from reservoirs in Indiana and Ohio, expecially during the late spring and summer. Additional information about the Organic Geochemistry Research Laboratory can be found at: http://ks.water.usgs.gov/studies/reslab/Tauler, R., Barcelš, D., and Thurman, E.M., 2000, Multivariate correlation between concentrations of selected herbicides and derivatives in outflows from selected U.S. Midwestern reservoirs: Environmental Science and Technology, v. 34, no. 16, p. 3307-3314. To request a paper copy of this journal article, email: scribner@.usgs.gov |
U.S. Department of the Interior |
U.S. Geological Survey
URL: /pubs/abstracts/emt.est.v3416.html
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The USGS has collected hydrologic information in Kansas since 1895 with the first USGS Cooperative
Water Program funding agreement for 6 streamflow gages with the Kansas Water Board. USGS collects streamflow
and gage-height data; reservoir content; water-quality and water-quantity data; suspended-sediment data;
and groundwater levels. Hydrologic studies are conducted on national, regional, statewide, and local levels.
The USGS in Kansas works cooperatively with 31 Federal, State, and local agencies, such as the Kansas Water Office, the U.S.Army Corps of Engineers, and the City of Wichita