Environmental fate of mercury discharged into the upper Wisconsin River

Water, Air, & Soil Pollution
By: , and 



The authors studied the distribution of Hg in sediments, fish, and crayfish in a 60 km reach of the Upper Wisconsin River that formerly received Hg in discharges from pulp and paper mills. The most heavily contaminated strata of sediments were deposited during the 1950s and early 1960s and buried under subsequent deposits; however, surficial sediments remained substantially enriched at certain sites in 1981. Median concentrations of Hg in surficial sediments, adjusted for grain size, were at least 10-fold greater at the main study area than at an upstream reference site. Total concentrations exceeded 1.0 mu g g super(-1) wet weight in axial muscle tissue in only 2 of 173 fish analyzed from the study area; however, historical comparisons revealed that Hg contamination of fish (common carp Cyprinus carpio and walleye Stizostedion vitreum vitreum ) and crayfish (Orconectes ) in the river had not decreased since the early 1970s.
Publication type Article
Publication Subtype Journal Article
Title Environmental fate of mercury discharged into the upper Wisconsin River
Series title Water, Air, & Soil Pollution
DOI 10.1007/BF00149329
Volume 29
Issue 1
Year Published 1986
Language English
Publisher University of Wisconsin River Studies Center
Contributing office(s) Upper Midwest Environmental Sciences Center
Description pp. 57-76
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Water, Air, and Soil Pollution
First page 57
Last page 76
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