Selected Papers on Agricultural Chemicals in Water Resources of the Midcontinental United States PDF Download
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Author:
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ISBN:
Category : Agricultural chemicals
Languages : en
Pages : 108
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Book Description
Author:
Publisher:
ISBN:
Category : Agricultural chemicals
Languages : en
Pages : 108
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Author:
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ISBN:
Category : Hydrology
Languages : en
Pages : 80
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Author: Dana W. Kolpin
Publisher:
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Category : Agricultural chemicals
Languages : en
Pages : 32
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The historic stream flooding and intense rainfall across the upper Mississippi River Basin during summer 1993 had an immediate effect on near-surface unconsolidated aquifers by raising the water levels closer to the land surface. The objective of this study was to determine if this flooding also had immediate effects on ground-water quality. Water samples were collected during September and October 1993 from 110 wells completed in near-surface unconsolidated aquifers and were analyzed for herbicides, herbicide metabolites, inorganic nutrients, and volatile organic compounds. The results of these samples were compared with those obtained during summer 1991 or 1992. Water samples from the Missouri River alluvial aquifer had a fourfold increase in the frequency of herbicide detection. There also appears to be a relation between increases in total herbicide concentration and the occurrence of stream flooding near a well. Water samples from wells that had at least a 20% increase in dissolved-oxygen concentration had the greatest frequency of substantial changes in total herbicide concentration and substantial increases in nitrate concentration.
Author:
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Category : Geology
Languages : en
Pages : 622
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Author: Charles A. Perry
Publisher:
ISBN:
Category : Agricultural chemicals
Languages : en
Pages : 300
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Book Description
Author: D. A. Goolsby
Publisher:
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Category : Agricultural chemicals
Languages : en
Pages : 32
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Author: U.S. Geological Survey Toxic Substances Hydrology Program. Technical Meeting
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Category : Groundwater
Languages : en
Pages : 636
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Author: David W. Morganwalp
Publisher:
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Category : Pollution
Languages : en
Pages : 638
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Book Description
Author: Jeffrey M. Giddings
Publisher: SETAC
ISBN: 1880611783
Category : Aquatic organisms
Languages : en
Pages : 433
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Author:
Publisher:
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Category : Government publications
Languages : en
Pages :
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