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United States Department of Agriculture

Agricultural Research Service

Research Project: Air Quality Impacts of Dairy Facilities in Central California Project Number: 5030-11610-001-14
Project Type: Reimbursable

Start Date: Apr 01, 2010
End Date: Mar 31, 2015

Objective:
1) Measure and characterize the emission and vertical profile of ozone, particulate matter (PM), selected volatile organic compounds (VOCs), ammonia, and greenhouse gases (GHGs) from dairies in California. 2) Characterize reactions of select VOCs for the formation of ozone in reaction chambers.

Approach:
1) Measurement of the concentration profiles of PM in a commercial dairy - within facility and vertical profile from the downwind locations from the facilities. 2) Measurement of the concentration profiles of greenhouse gases (i.e., CO2, N2O, CH4) and selected VOCs (i.e., volatile fatty acids, alcohols, phenols, etc.) - within facility and vertical profile from the facilities. a. Canisters/Sorbent tubes – for VOCs b. Canisters for methane/N2O/CO2 c. Lasers and passive samplers for ammonia 3) Characterization of VOCs sorbed to particulates as a function of particle size.

Last Modified: 11/25/2014
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