Ambient PM10 emissions: contributions and impact on silica emissions

This paper reviews the ambient air literature and discusses the link between particulate matter with an MMAD < or = 10 micrograms (PM10) emissions and estimates of silica particulate concentrations. Silica appears to represent a range of 0.4-21% of PM10 emissions, although this estimation needs more research (including direct measurements) to contribute to increased confidence in the methodology.