Measurement of Fine Particulate Matter Nonvolatile and Semi-Volatile Organic Material with the Sunset Laboratory Carbon Aerosol Monitor

Comparison of Speciation Sampler and PC-BOSS Fine Particulate Matter Organic Material Results Obtained in Lindon, Utah, during Winter 2001–2002

“…16,17 TPV analysis indicated that gas-phase organic material consistent with the expected denuder efficiency did penetrate the speciation sampler short BOSS denuder. SVOCs lost from particles are expected, based on past studies, to be evolved from the CIG filters during the TPV analysis from approximately 220 to 280°C in a symmetrical peak centered around 250°C.…”

Modifications to the Sunset Laboratory Carbon Aerosol Monitor for the Simultaneous Measurement of PM2.5 Nonvolatile and Semi-Volatile Carbonaceous Material

“…Monitors The results obtained using two Sunset monitors using a common inlet at Rubidoux have been previously described 8 and are repeated here for comparison with results obtained with the dual-oven instrument. Results included the semi-continuous measurement of total fine particulate carbonaceous material, nonvolatile material (including the EC) being determined on the instrument with the quartz filter, and fine particulate SVOC being determined on the instrument with the CIG filter.…”

“…Particulate SVOC A Sunset monitor was modified 8 to allow for the determination of SVOC lost from particles during the 45-min sample collection period. The modified instrument sampled the second of the two split flow lines after the sharp-cut cyclone inlet.…”

“…These studies have been previously described. 8 The dual-oven Sunset monitor was initially tested during January-March 2005 at the Lindon, UT, sampling site. These studies were used to determine sampling protocols, blank evaluations, and comparisons with 3-hr PC-BOSS data.…”

“…The authors have previously reported on the modification of a Sunset Laboratory carbon aerosol monitor to allow for the determination of SVOM. 8 In the conventional Sunset monitor, the sampled airstream passes through a small denuder with charcoal-impregnated cellulose filter (CIF) surfaces to remove gas-phase organic compounds that can adsorb on the quartz filter and subsequently particles are collected on a quartz filter. However, some of the semi-volatile organic carbonaceous material (SVOC) is lost from the particles on the filter during collection and therefore is not measured.…”