Mercury in the St. Louis River, Mississippi River, Crane Lake, and Sand Point Lake: Cycling, distribution, and sources. Report to the legislative commission on Minnesota resources

Recent surveys of mercury contamination in fish have led to an increasing awareness of the problem and have prompted widespread fish consumption advisories in 26 states (including Minnesota) and in several other countries (e.g., Canada and Sweden). Consequently, these findings have spawned a number of research questions; efforts in these states and countries have endeavored to investigate and determine sources and causes of mercury contamination and the mechanisms associated with mercury bioaccumulation in fish. The report contains Mercury Cycling in Lakes: Development of Analytical Capabilities for Ultra-Trace Mercury Measurements; Mercury Sources and Distribution in Minnesota's Aquatic Resources: Surface Water, Sediments, Plants, Plankton, Fish, Remediation, and Methods; and Mercury Sources and Distribution in Minnesota's Aquatic Resources: Deposition.