225 S. University Street
West Lafayette, IN 47907-2093
Phone: (765) 494-1214
Fax: (765) 496-1115
The Purdue Agricultural Air Quality Laboratory (PAAQL) is part of the Department of Agricultural and Biological Engineering at Purdue University, West Lafayette, Indiana. The PAAQL specializes in odor assessment using field and laboratory olfactometry, chemical analyses using gas chromatography-mass spectrometry with olfactory sensing (GC-MS-O), ion chromatography, closed-cell FTIR spectrometry, and continuous emissions monitoring of ammonia, hydrogen sulfide, carbon dioxide, methane, nitrous oxide, ethanol, methanol and particulate matter. PAAQL personnel have been studying the science and engineering of odor, gas, and dust emissions since January of 1994. Our research has served industry, government and agribusiness, in addition to communities at large.
Some of our specialized capabilities and areas of expertise include:
PAAQL's on-campus laboratories include state-of-the-art analytical equipment for samples collected on-site. Our core lab capabilities include the following:
The National Air Emission Monitoring Study (NAEMS) was developed in response to a 2003 National Academy of Sciences (NAS) report which highlighted possible air pollution problems arising from animal feeding operations (AFOs). It was designed by the Air Quality Group of the USDA's Natural Resources Conservation Service (NRCS) to address the issues in the NAS report, and to determine whether AFOs were likely to have compliance issues regarding the Clean Air Act and/or the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, commonly known as "Superfund"). Farms were chosen to be representative of four main industries: pork, dairy, eggs and broilers. NAEMS will originally study emissions of ammonia, hydrogen sulfide, carbon dioxide, volatile organic compounds (VOCs), and particulate matter. Other pollutants (such as methane and pathogenic bacteria) are being added as the study progresses, and as PIs at PAAQL and the sub-contracting NAEMS universities use the NAEMS setup to leverage new projects.
NAEMS is nationwide in scope, including farms and university researchers from around the country. The NAEMS team will conduct data collection year-round for two consecutive years. Because of its duration and scope, NAEMS is the most comprehensive agricultural air emission study ever conducted. PAAQL, with collaboration from the Purdue Applied Meteorology Laboratory (PAML), is the lead institution for NAEMS.
Update - EPA's Environmental Appeals Board approves first NAEMS Consent Agreements (more info).
Click here for the USEPA's Press Release concerning the ratification of the Consent Agreements.