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Field Performance of PM 2.5 Federal Reference Method Samplers

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Abstract: The results of several research field studies were evaluated to estimate the precision and bias of various designated PM2.5 Federal Reference Method (FRM) samplers. Precision was high in three carefully conducted research studies where all operational activities were strictly controlled, with an average coefficient of variation (CV) ranging from 2 to 6 percent. No significant bias was found between the method designations. Comparisons between the designated reference method samplers meet the EPA Equivalent Method Criteria for comparability except for one pair of samplers. In this instance, the y-intercept of the Andersen RAAS2.5-300 versus the Rupprecht & Patashnick Partisol-Plus 2025 was 1.07 ug/m3, slightly exceeding the y-intercept 1.0 ug/m3 limit. Non-designated PM2.5 samplers demonstrated strong linear relationships when compared to reference method samplers; however, the comparisons presented in this analysis did not meet the EPA Subpart C criteria. These results indicate that the currently designated reference method samplers should allow precision and bias objectives to be achieved for the National PM2.5 Network.

This work has been funded wholly or in part by the United States Environmental Protection Agency under Contract 68-D5-0040 to Research Triangle Institute. It has been subjected to Agency review and approved for publication.
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Citation:Peters, T., G. A. Norris, R. W. Vanderpool, D. B. Gemmill, R. W. Wiener, R. W. Murdoch, F. F. Mcelroy, and M. Pitchford. Field Performance of PM 2.5 Federal Reference Method Samplers. AEROSOL SCIENCE AND TECHNOLOGY 34(5):433-443, (2001).
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Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
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Division: Human Exposure & Atmospheric Sciences Division
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Branch: Atmospheric Methods & Monitoring Branch
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Product Type: Journal
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Published: 05/01/2001
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Related Entries:
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Bullet Item Heasd PM Research Methods: Particle Methods Evaluation and Development
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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