Is mercury from small-scale gold mining prevalent in the southeastern
1. Introduction. Artisanal and small-scale gold mining (ASGM) occurs in over 70 countries (Telmer and Veiga, 2009) and is the largest anthropogenic source of mercury (Hg) in the environment (UNEP, 2013).In the Brazilian Amazon alone, 2000–3000 tons of Hg has been released into the environment since the 1970s (Malm, 1998, …