Mercury Concentrations in Seston, Mussels, Water, Sediments, and Preyfish from Lake Huron, 2022

As part of the larger Great Lakes Cooperative Science and Monitoring Initiative (CSMI) , the U.S. Geological Survey Mercury Research Laboratory (MRL) completed a binational assessment partnering with the U.S. Environmental Protection Agency (US EPA), Environmental Climate Change Canada (ECCC), Michigan-DNR (MI-DNR), University of Minnesota-Duluth Natural Resources Research Institute (UM-NRRI), and the National Oceanographic and Atmospheric Association (NOAA), to assess contaminant concentrations within seston, mussels, preyfish, waters, and surface sediments within Lake Huron. All matrices were assessed for mercury and methylmercury concentrations to examine spatial trends of mercury within the lakes. Sediments were also analyzed for total mercury stable isotope composition to approximate sources of mercury contamination to the lake.

作为大型项目大湖合作科学与监测倡议（Great Lakes Cooperative Science and Monitoring Initiative, CSMI）的组成部分，美国地质调查局汞研究实验室（U.S. Geological Survey Mercury Research Laboratory, MRL）联合美国环境保护署（U.S. Environmental Protection Agency, US EPA）、加拿大环境与气候变化部（Environmental Climate Change Canada, ECCC）、密歇根州自然资源部（Michigan-DNR, MI-DNR）、明尼苏达大学德卢斯分校自然资源研究所（University of Minnesota-Duluth Natural Resources Research Institute, UM-NRRI）以及美国国家海洋和大气管理局（National Oceanographic and Atmospheric Association, NOAA）完成了一项跨国评估，以测定休伦湖内悬浮质、贻贝、饵料鱼、水体及表层沉积物中的污染物浓度。所有受试环境基质均针对汞与甲基汞浓度开展检测，以解析该湖体内汞的空间分布趋势。此外，研究还对表层沉积物的总汞稳定同位素组成进行了分析，以估算该湖泊汞污染的潜在来源。