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Pesticide inputs and levels: Minnesota waters-Lake Superior Basin

Author: Theron O Odlaug; Theodore A Olson; Minnesota Pollution Control Agency.; United States. Environmental Protection Agency.
Publisher: Washington, DC : U.S. Government Printing Office, 1972.
Series: Water pollution control research series.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
Concern about pesticide accumulation in the Upper Great Lakes prompted studies along Lake Superior's North Shore to provide current information on pesticide levels and contamination. Water samples were analyzed from the Grand Marais, the Duluth Pumping Stations, and the Duluth sewage treatment plant. Clams were exposed for bioassay purposes in 22 streams because they are concentrators of toxic substances, including  Read more...
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Additional Physical Format: Online version:
Minnesota Pollution Control Agency.
Pesticide inputs and levels: Minnesota waters-Lake Superior Basin.
[Washington, U.S. Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1971 [i.e. 1972]
(OCoLC)629726819
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Theron O Odlaug; Theodore A Olson; Minnesota Pollution Control Agency.; United States. Environmental Protection Agency.
OCLC Number: 884166
Description: viii, 108 pages : illustrations ; 28 cm.
Series Title: Water pollution control research series.
Responsibility: by Theron O. Odlaug and Theodore A. Olson.

Abstract:

Concern about pesticide accumulation in the Upper Great Lakes prompted studies along Lake Superior's North Shore to provide current information on pesticide levels and contamination. Water samples were analyzed from the Grand Marais, the Duluth Pumping Stations, and the Duluth sewage treatment plant. Clams were exposed for bioassay purposes in 22 streams because they are concentrators of toxic substances, including chlorinated hydrocarbons, and reveal DDT and related compounds present in amounts below detection by ordinary analytical procedures. Under normal flow conditions, very little insecticide contamination was being contributed to Lake Superior from the drainage basin. Highest values occurred in the Lester and Lower St. Louis Rivers and in sewage effluent.

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