Characterization and contribution to PM2.5 of semi-volatile aerosols in Paris (France)

Collocated PM2.5 measurements using a conventional R&P TEOM (model 1400a) and a TEOM-FDMS were performed at a Paris urban background site during winter/summer field experiments. Results showed that conventional TEOM underestimates PM2.5 mass concentrations by about 50% in winter and 35% in summer. They also confirmed that this negative sampling artifact, due to the volatilization of semi-volatile material (SVM) inside the instrument, cannot be accurately accommodated by a single correction factor because of SVM routine fluctuations. A basic filter-based investigation of the SVM chemical composition also indicated that SVM, measured by the TEOM–FDMS, is mainly formed by ammonium nitrate in winter while significant contributions of semi-volatile organic matter were observed in summer. The latter species was found to possibly account for more than 50% of secondary organic aerosol formed during summer afternoons. These findings call for more investigation of the SVM chemical composition, particularly during the summer season, in Paris and in Europe.

[1]  The Measurement of Fine Particulate Semivolatile Material in , 2006, Journal of the Air & Waste Management Association.

[2]  Judith C. Chow,et al.  The dri thermal/optical reflectance carbon analysis system: description, evaluation and applications in U.S. Air quality studies , 1993 .

[3]  Roy M. Harrison,et al.  Quantitative interpretation of divergence between PM10 and PM2.5 mass measurement by TEOM and gravimetric (Partisol) instruments , 2004 .

[4]  J. Huntzicker,et al.  Secondary formation of organic aerosol in the Los Angeles basin: A descriptive analysis of organic and elemental carbon concentrations , 1991 .

[5]  P. Hopke,et al.  Performance evaluation of continuous PM 2.5 mass concentration monitors , 2005 .

[6]  Delbert J. Eatough,et al.  Semi-volatile secondary organic aerosol in urban atmospheres: meeting a measurement challenge , 2003 .

[7]  O. Boucher,et al.  Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: A review , 2000 .

[8]  Harvey Patashnick,et al.  Continuous PM-10 Measurements Using the Tapered Element Oscillating Microbalance , 1990 .

[9]  Richard Reiss,et al.  Evidence of Health Impacts of Sulfate-and Nitrate-Containing Particles in Ambient Air , 2007, Inhalation toxicology.

[10]  R. Gehrig,et al.  A new method to link PM10 concentrations from automatic monitors to the manual gravimetric reference method according to EN12341 , 2005 .

[11]  P. Hopke,et al.  Measurement of Both Nonvolatile and Semi-Volatile Fractions of Fine Particulate Matter in Fresno, CA , 2006 .

[12]  Timo Mäkelä,et al.  Intercomparison of methods to measure the mass concentration of the atmospheric aerosol during INTERCOMP2000: influence of instrumentation and size cuts , 2004 .

[13]  Yutaka Kondo,et al.  Oxygenated and water‐soluble organic aerosols in Tokyo , 2007 .

[14]  D. Green,et al.  The implications of tapered element oscillating microbalance (TEOM) software configuration on particulate matter measurements in the UK and europe , 2006 .

[15]  F. Lurmann,et al.  Evaluation of the TEOM method for measurement of ambient particulate mass in urban areas. , 1997, Journal of the Air & Waste Management Association.

[16]  R. Sarda-Estève,et al.  Semi‐volatile aerosols in Beijing (R.P. China): Characterization and influence on various PM2.5 measurements , 2007 .

[17]  W. Maenhaut,et al.  Aerosol mass closure and reconstruction of the light scattering coefficient over the Eastern Mediterranean Sea during the MINOS campaign , 2005 .

[18]  S. Hering,et al.  Characteristics of Nuclepore filters with large pore size—II. Filtration properties , 1983 .