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a Average mercury levels found in sediments in different river systems in Suriname; Gray bars represent the Canadian Interim Sediment Quality Guideline for Protection of Aquatic Life of 0.17 μg L−1. b Boxplot showing the distribution of mercury levels in sediment, measured in different areas. Codes for areas: 1 GMA, 2 DGMA, 3 UGMA, 4 Brokopondo Reservoir (BR), 5 WSW, 6 NW, 7 PLS, 8 PWS
