No abstract

Gold that is brought from artisanal and small-scale gold mining areas to gold shops for processing and sale typically contains 5-40% mercury. The uncontrolled removal of the residual mercury in gold shops by using high-temperature evaporation can be a significant source of mercury emissions in urban areas where the shops are located. Emissions from gold shop hoods during a burn can exceed 1,000 mg/m 3. Because the saturation concentration of mercury vapor at operating temperatures at the hood exhaust is less than 100 mg/m 3 , the dominant component of the exhaust is in the form of aerosol or liquid particles.

No abstract

No abstract

No abstract