![]() ![]() This article has been contributed to by US Government employees and their work is in the public domain in the USA.The concern of mercury pollution and the impact that it poses on the marine environment were studied heavily since the case of the poison from Minamata bay in the 1960s. Mercury Methylation Methylmercury Photodemethylation Water pollution. This article has been contributed to by US Government employees and their work is in the public domain in the USA. These results can be used to identify the relative importance of MeHg processes that can help guide reservoir management decisions. The results showed that rates of MeHg production and degradation within the water column were relatively low (0.5 m below the surface. Our study utilized stable isotope addition experiments to trace MeHg formation and degradation within the water column of the reservoirs to understand the relative importance of these processes on the mass of MeHg using the Water Quality Analysis Simulation Program. The study location was the Hells Canyon complex of 3 reservoirs on the Idaho-Oregon border, USA, that has fish consumption advisories as a result of elevated MeHg concentrations. ![]() The goal of the present study was to understand the relative importance of microbial Hg methylation/demethylation and abiotic photodemethylation that govern the mass of MeHg within an aquatic system. ![]() In addition, demethylation in surface waters can occur via abiotic sunlight-mediated processes. Methylmercury is produced by anaerobic bacteria, many of which are also capable of MeHg degradation. Methylmercury (MeHg) is a highly toxic form of mercury that can bioaccumulate in fish tissue. ![]()
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