Pittsburgh, Pennsylvania, U.S.
 
Location   Latitude: 40.44; Longitude: -79.94
Site Type   Urban
Sampling Height   500 m (ASL)
Reported Time   September 2002
Instrument   Quadrupole Aerosol Mass Spectrometer

 

Contents
  1. Time series of aerosol species (SO42-, NO3-, NH4+, Cl-, Organics)
  2. Chemically resolved size distributions
  3. Deconvolved organics aerosol components
  4. QA/QC
  5. Paper published on this dataset

1. Time series of aerosol species

Species
Citation
Comments
Data
Sulfate
Ammonium
Nitrate
Organics
Chloride
Total*
  1. 1 hour average
  2. Time: EST (= UTC - 5 hr)
  3. Concentrations reported at ambient conditions at the time of measurement
  4. Part of Pittsburgh Air Quality Study (PAQS)


Download 1-hour aveage mass concentration data

*Total = SO42-+ NO3-+ NH4++ Cl-+ Organics

2. Chemically resolved size distributions

Species
Citation
Figure #
Comments
Data
Total
Figure 3c
1 hour average

uglog_Msig_Total_1h.itx
Sulfate
Figure 3d
1 hour average

uglog_Msig_Sulfate_1h.itx

Ammonium
Figure 3e
1 hour average

uglog_Msig_Ammonium_1h.itx

Nitrate
Figure 3f
1 hour average

uglog_Msig_Nitrate_1h.itx
Organics
Figure 3g
1 hour average

uglog_Msig_Organics_1h.itx


3. Deconvolved organic aerosol components (2 component analysis)

Components
Citation
Figure #
Comments
Data
HOA
Figure 9a-1
2-component analysis

HOA_Pittsburgh.itx
OOA
Figure 9b-1
2-component analysis

OOA_Pittsburgh.itx
Time series
Figure 1a
2-component analysis

HOA_OOA_Conc.itx

4. QA/QC

4.1 Dectection limit (DL)

4.2 Collection efficiency (CE) and relative ionization efficiency (RIE)

Chemical species
CE
RIE

DL (ug/m3)
10 min Avg.
1 hr Avg.
Sulfate
0.5
1.15
0.05
0.020
Ammonium
0.5
3.8
0.11
0.045
Organics
0.7
1.4
0.15
0.061
Nitrate
0.5
1.1
0.01
0.004
Zhang, Q., et al. JGR 2005, 110, D07S09,doi:10.1029/2004JD004649

4.3 Intercomparisons with collocated instruments

4.3.1 Time series

Instruments
Citation
Figure #
Comments
Data
AMS Total vs. TEOM PM2.5 mass

Figure 2a

AMS Total = PM1

TEOM PM2.5 mass (R&P)

Time Series

Scatter plots
AMS Organics vs. OC
Figure 2b
2h OC (Sunset) and 24 hr OC (filter samples)
AMS Sulfate vs. PM2.5 Sulfate
Figure 2c
PM2.5 Sulfate (Semicontinuous sulfate analyzer)
AMS Ammonium vs. PM2.5 Ammonium
Figure 2d
4hr PM2.5 Ammonium (Steam Sampler)

4.3.2 Size distributions

Instruments
Citation
Figure #
Comments
Data
AMS and SMPS
Figure 4
AMS 2hr particle mass distribution vs. SMPS number distribution

 

5. Paper published on this dataset

  • Qi Zhang, Canagaratna, M., Jayne, J., Worsnop, D. and Jimenez, J. (2005) Time and Size-Resolved Chemical Composition of Submicron Particles in Pittsburgh - Implications for Aerosol Sources and Processes. Journal of Geophysical Research 110, D07S09, doi:10.1029/2004JD004649. PDF
  • Qi Zhang, Stanier, C., Canagaratna, M., Jayne, J., Worsnop, D., Pandis, S. and Jimenez, J. (2004) Insights into Nucleation Burst and Particle Growth in Pittsburgh Based on Aerosol Mass Spectrometry. Environmental Science & Technology 38(18), 4797-4809. PDF
  • Qi Zhang, Alfarra, R., Worsnop, D., Allan, J., Coe, H., Canagaratna, M., and Jimenez, J. (2005) Deconvolution and Quantification of Hydrocarbon-like and Oxygenated Organic Aerosols Based on Aerosol Mass Spectrometry. Environmental Science & Technology 39 (13), 4938-4952, doi:10.1021/es048568l. PDF
  • Qi Zhang, Worsnop, D., Canagaratna, M., and Jimenez, J. (2005) Hydrocarbon-like and Oxygenated Organic Aerosols in Pittsburgh: Insights into Sources and Processes of Organic Aerosols Atmospheric Chemistry and Physics, 5, 3289-3311. PDF
  • Qi Zhang, Jimenez, J., Worsnop, D., and Canagaratna, M. (2007) A Case Study of Urban Particle Acidity and Its Influence on Secondary Organic Aerosol, Environmental Science & Technology, 41 (10), DOI 10.1021/es061812j. PDF

  

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