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Application of a Dual Fine Particle Sequential Sampler, a Tapered Element Oscillating Microbalance, and Other Air Monitoring Methods to Assess Transboundary Influence of PM 2.5

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Abstract: Transboundary influences of paniculate matter less than or equal to 2.5 um in aerodynamic diameter (PM2.5,) have been investigated in a U.S.-Mexican border region using a dual fine particle sequential sampler (DFPSS) and tapered element oscillating microbalance (TEOM). Daily measurements of PM2.5 were conducted with the DFPSS. Short-term variations in the concentration of PM2.5 were measured and analyzed on-site using a tapered element oscillating microbalance (TEOM?) to assess episodic emissions that may have crossed the border. Fine particle carbon measurements using a dichotomous sampler and meteorological measurements were also performed. Ambient monitoring with these sampling methods was conducted for one year at three fixed sites very close to the border of the Lower Rio Grande Valley. Element tracer analyses and wind sector analyses were performed to assess transboundary influences. Ad hoc sampler comparisons were also presented. Presentation of advantages and limitations of sampling methods in this study can help establish a baseline for assessing future air quality conditions of a transboundary nature in the Valley.

The information in this document has been funded wholly or in part by the United States Environmental Protection Agency under Contract No. 68-D2-0134 to QST Environmental, Inc. and Contract No. 58-D5-0049 to ManTech Environmental, Inc. This article has been subjected to agency review and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
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Citation:Mukerjee, S., D. S. Shadwick, J. J. Bowser, and L. Y. Carmichael. Application of a Dual Fine Particle Sequential Sampler, a Tapered Element Oscillating Microbalance, and Other Air Monitoring Methods to Assess Transboundary Influence of PM 2.5. FIELD ANALYTICAL CHEMISTRY AND TECHNOLOGY 3(3):201-217, (1999).
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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: Source Apportionment & Characterization Branch
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Product Type: Journal
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Published: 08/12/1999
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