Method for mapping Hg(0) emissions from gold shops in artisanal and small-scale gold mining communities

Gold shops in artisanal and small-scale gold mining communities represent major point sources of airborne mercury pollution. Concentrations of elemental mercury (Hg(0)) emitted by these shops can be determined using a portable atomic absorbance spectrometer (AAS) with Zeeman correction. These measured Hg(0) concentrations can then be correlated to position as determined by a hand-held GPS unit, and the resulting data mapped using a Geographic Information System (GIS). A detailed method for obtaining and analyzing data collected near gold shops in Mazuko, Peru is provided. Maps generated using this method were employed to identify point sources of Hg(0) • A detailed method is provided to collect and process data, ultimately generating a map that allows for the screening of a community to identify point sources of Hg(0) contamination. • Raw data is provided, as well as a video detailing data processing and mapping using a common spreadsheet program and an open-source GIS. • The generated map can be used for determining areas where people may be exposed to elevated Hg(0) concentrations and/or occupational mercury vapor exposure, targeted enforcement, or outreach to limit Hg(0) pollution.