Integrated and real-time diffusion denuder sample for PM2.5

High-Volume PUF versus Low-Volume PUF Sampling Comparison for Collecting Gas Plus Particulate Polycyclic Aromatic Hydrocarbons

“…Van Vaeck et al (1984) reported a loss of SVOCs during high-volume particulate sampling with fiber filters, resulting in a loss of mass. High flows through a denuder system (Cui et al 1997;Eatough et al 1999) have also shown increased particle loss. Results of face velocity experiments have shown that measurements of carbon from low-volume sampling yielded higher concentrations compared to high-volume sampling (USEPA 2001), especially in quartz fiber filter experiments where measured carbon has exhibited a significant decrease with increasing filter face velocity (McDow and Huntzicker 1990).…”

One– and Three–Hour PM2.5Characterization, Speciation, and Source Apportionment Using Continuous and Integrated Samplers

“…The Real-time total Ambient Mass Sampler (RAMS), based on diffusion denuder, Nafion dryer, and TEOM monitor technologies, was used for the continuous determination of total PM 2.5 mass including semivolatile material (SVM: semivolatile ammonium nitrate and SVOC; Eatough et al 1999Eatough et al , 2003aLong et al 2003a). The RAMS measures total PM 2.5 mass with a TEOM monitor using a "sandwich" filter to retain SVM that would be lost from particles in a conventional TEOM monitor.…”

“…The combination of technologies used in the High-Volume Brigham Young University Organic Sampling System (BIG BOSS) (Tang et al 1994) and the Harvard particle concentrator (Sioutas et al 1994) has resulted in the Particle ConcentratorBrigham Young University Organic Sampling System (PC-BOSS) (Ding et al 2001;Eatough et al 1999;Lewtas et al 2001). The configuration and operation of the PC-BOSS as used in the Salt Lake EMPACT program has been previously described (Eatough et al 2003a;Lewtas et al 2001;Long et al 2000).…”

Effect of Semivolatile Material on PM 2.5 Measurement by the PM 2.5 Federal Reference Method Sampler at Bakersfield, California

“…Several diffusion denuder samplers, such as the low volume Brigham Young University organic sampling system (BOSS; Eatough et al 1993), the high volume BIG BOSS (Tang et al 1994), the recently developed BOSS coupled to a particle concentrator (PC-BOSS; Eatough et al 1999;Lewtas et al 2001), and the Lawrence Berkeley Laboratory IOGAPS (Lewtas et al 2001;Gundel and Lane 1998), have been developed to address the issues of both positive and negative artifacts in the sampling of the semivolatile organic component of particulate matter Lewtas et al 2001;Gundel and Lane 1998;Tang et al 1994;Eatough et al 1993).…”

“…The PC-BOSS (Particle Concentrator-Brigham Young University Organic Sampling System) is a sequential diffusion denuder sampling method for the measurement of PM 2:5 including semivolatile inorganic and organic materials Eatough et al 1999;Lewtas et al 2001). A comprehensive evaluation eld study in Riverside, CA, indicated that the PC-BOSS can accurately determine PM 2:5 mass including SVM (Pang et al 2002;Pang et al 1999).…”