Award Abstract #0521137
MRI: Development of a A Wide-Range Impactor Particle Sampler (WRIPS) for Near-Real Time Analysis of Atmospheric Particulate Matter

NSF Org:	CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems
Initial Amendment Date:	September 2, 2005
Latest Amendment Date:	March 12, 2008
Award Number:	0521137
Award Instrument:	Standard Grant
Program Manager:	Cynthia J. Ekstein CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems ENG Directorate for Engineering
Start Date:	October 1, 2005
Expires:	September 30, 2009 (Estimated)
Awarded Amount to Date:	$446997
Investigator(s):	Thomas Holsen holsen@clarkson.edu (Principal Investigator) Suresh Dhaniyala (Co-Principal Investigator)
Sponsor:	Clarkson University 8 Clarkson Avenue Potsdam, NY 13699 315/268-6475
NSF Program(s):	ENVIRONMENTAL ENGINEERING, MAJOR RESEARCH INSTRUMENTATION, ENVIRONMENTAL IMPLICATIONS
Field Application(s):	0118000 Pollution Control, 0308000 Industrial Technology, 0313040 Water Pollution, 0316000 Trace Contaminants
Program Reference Code(s):	SMET,EGCH,9251,9197,9187,9178,1189,1179,001E
Program Element Code(s):	1440,1189,1179

ABSTRACT

0521137

Holsen

Airborne particulate matter (PM) can cause adverse health effects, plays a significant role in climate change, impacts smog formation, and decreases visibility. In addition, deposition of

pollutants associated with PM is a significant input to many ecosystems. For these reasons there is an urgent need for techniques that can measure PM and PM-associated pollutants at short enough time scales that sources of these particles can be characterized and mechanistic models of their chemistry and fate developed. Since these properties are dependent on particle size, the new technique should also be able to separate the PM by size before they are characterized. An additional requirement of these instruments is that they separate particles from the gas stream before collection to avoid sampling artifacts.

An instrument that meets this challenging combination of requirements for near real-time measurement of size-segregated PM without sampling artifacts will be a central outcome of this research. This unique instrument could be used to measure any compound associated with PM that can be converted to the gas phase at temperatures < 850C (for example Hg, organic and elemental carbon, pesticides and numerous other organic compounds) and then detected with a real-time detector (for example cold vapor atomic fluorescence for Hg, or a mass spectrophotometer for pesticides). The instrument will be designed so that different carrier gases can be used to accommodate these different analytical techniques. As a part of this project, we will also develop innovative techniques to evaluate particle samplers in an aerosol wind tunnel.

These techniques will become increasingly important as new particle samplers are developed in response to the growing interest in PM. The proposed development project will be of relevance to the NSF MRI Program by addressing the limitations in current in-situ, size-classified aerosol measurement capabilities and allowing for the development of state-of-the-art instrument for real-time particle characterization.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Sang-Rin Lee; Thomas M. Holsen; Suresh Dhaniyala.  "Design and Development of Novel Large Particle Inlet for PM Larger Than 10 ìm (PM > 10),"  Aerosal Science and Technology,  v.42,  2008,  p. 140.


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