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Performance of Continuous PM 2.5 Monitors at a Monitoring Site in Ottawa, Canada

Performance of Continuous PM 2.5 Monitors at a Monitoring Site in Ottawa, Canada. Tom Dann Luc White, Alain Biron Environment Canada, ETC, Ottawa. NESCAUM Monitoring and Assessment Committee Meeting Troy, NH April 24/25, 2007. Environment Environnement Canada Canada.

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Performance of Continuous PM 2.5 Monitors at a Monitoring Site in Ottawa, Canada

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  1. Performance of Continuous PM2.5 Monitors at a Monitoring Site in Ottawa, Canada Tom Dann Luc White, Alain Biron Environment Canada, ETC, Ottawa NESCAUM Monitoring and Assessment Committee Meeting Troy, NH April 24/25, 2007 Environment Environnement Canada Canada

  2. Ottawa Monitoring Site • Study Period: May 2004 – present> 500 days of data for 1 or more continuous instruments with filter-based data • 24h PM2.5Max: 64 µg/m³ 98th Perc: 37 µg/m³ Mean: 10.0 µg/m³ • Temperature Range: -27°C to 29°C • Filter based samplers: R&P Partisol FRM and R&P Partisol Sequential Dichot

  3. Ottawa Monitoring Site • Met-One BAM 1020 May 2004 • Met-One BAM 1020 (new) Nov 2006 • TEOM SES (30°C) May 2004 • TEOM FDMS July 2004 • GRIMM 180 (PM10, PM2.5, PM1.0) Oct. 2005 • Thermo SHARP 5030 June 2006

  4. Met-One BAM 1020 • low-level C14 radiation source • uses beta-ray attenuation and a filter tape system • inlet is heated but filter is at ambient (station) temperature • humidity problems in early units caused higher readings in the summer • ‘smart heater’ is turned on by a relative humidity sensor • hourly average output

  5. Linear regression results for 24h dataBAM Ottawa (Warm Seasons 2004-2006)

  6. Linear regression results for 24h dataBAM with 35% Humidity Setting Ottawa (2005-2006)

  7. Replacement of BAM

  8. Linear regression results for 24h dataTEOM-FDMS Ottawa (2004-2006)

  9. Grimm 180 Multi-channel Aerosol Spectrometer Simultaneous measurement of PM1.0, PM2.5 and PM10 Particle counts by size (31 channels) and mass determination using algorithms No size cut on inlet – moisture control using Nafion dryer Truly continuous (real-time)

  10. Results for 24h PM2.5 data: Grimm 180 (Ottawa) Jan. 2006 – Dec. 2006

  11. Grimm 180 Results – Ottawa Summer 2006

  12. Humidity Effects on Grimm 180 (Ottawa)?

  13. Results for 24h Coarse data: Grimm 180 (Ottawa) Jan. 2006 – Mar. 2007

  14. Results for 24h PM10 data: Grimm 180 (Ottawa) Jan. 2006 – Mar. 2007

  15. Grimm 180 Results – Ottawa January 29-31, 2007

  16. Thermo SHARP 5030Synchronized Hybrid Ambient Real-time Particulate Monitor • Truly continuous (real-time) • Combination nephelometer & beta-ray attenuation • Light scattering photometer is continuously calibrated by beta attenuation mass sensor • Intelligent Moisture Reduction (IMR) System heating the inlet tube; threshold is set at 40%

  17. Linear regression results for 24h data: Sharp 5030 (Ottawa Jun. – Dec. 2006)

  18. Performance During Air Mass Change (Ottawa September 2006)

  19. Cost Comparisons for Continuous PM2.5 Instruments (Canadian$): • Met-One BAM 1020 $25,000 • R&P 1400AB TEOM $25,400 • R&P SES Kit $ 4,750 • R&P 8500 FDMS Kit $10,700 • TEOM-FDMS $36,100 • GRIMM 180 (PM10, PM2.5, PM1.0) $31,000 • Thermo SHARP 5030 $26,500

  20. 2006 Performance Based on EPA ARM Template

  21. PM Workshop – Ottawa April 2007 • Presentations and Summary: http://www.etc-cte.ec.gc.ca/NAPSAnnualRawData/ Password: ozone Folder: PMWORKSHOP2007

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