Molecular and Analytical Laboratory Center;
Department of Food Technology;
Faculty of Veterinary;
Universidade Federal Fluminense;
Niterói;
Brazil;
Chemistry Institute;
Food Science Program;
Universidade Federal do Rio de Janeiro;
Rio de Janeiro;
Brazil;
National Institute of Health Quality Control;
Fundacaeo Oswaldo Cruz;
Rio de Janeiro;
Brazil;
Laboratory of Theoretical and Applied Ichthyology;
Department of Ecology and Marine Resources;
Universidade Federal do Estado do Rio de Janeiro;
Rio de Janeiro;
Brazil;
Mercury levels; Seafood; Methylmercury; Public health; Aquatic environment;