Effects of Different Dust Suppression Approaches on Ambient Aerosols
JASON MIECH, Pierre Herckes, Matthew Fraser,
Arizona State University Abstract Number: 478
Working Group: Control and Mitigation Technology
AbstractPM
10 and PM
2.5 samples were collected from several plots of land treated with various dust suppression methods, including enzyme-induced calcium precipitation, magnesium chloride, and microbe-induced calcium precipitation. Samples were collected from the plots during excitation of dust accomplished by driving a truck over the plot multiple times with and without a chain-link fence dragged behind it. Chemical analyses on the samples included ion chromatography and inductively coupled plasma mass spectrometry to identify components of the treatments that became entrained. In addition to obtaining PM
10 and PM
2.5 concentrations from the aerosol samples, a DustTrak™ DRX Aerosol Monitor 8533 was also used to monitor the PM
10 concentration in real-time. These results will be used to evaluate the air quality impact of these dust suppression methods in addition to their effectiveness.