Abstract |
A wide array of contaminants has been detected in the lake basin and biota of Lake Huron. Approximately 70 contaminants have been identified to be present to date. The contaminants reported most frequently and in highest concentrations are PCBs, DDT-R, dieldrin, and mercury. Several other contaminants such as toxaphene, dioxin, PBB, and dibenzofurans are emerging environmental issues but have not been sufficiently studied. In general, Lake Huron contaminant concentrations fall within the range reported for the other Great Lakes. Within the data set, Saginaw Bay generally contains the highest concentrations of organic compounds in water, sediment, and biota and appears to be the region that should receive the greatest amount of concern and future study. |