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Aerostat-lofted instrument and sampling method for determination of emissions from open area sources |
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| Authors: | Aurell Johanna Gullett Brian K Pressley Christopher Tabor Dennis G Gribble Robert D |
| Institution: | a National Research Council, US Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC 27711, USA b US Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC 27711, USA c Integrated Systems Solutions Incorporated, 22685 Three Notch Road, California, MD 20619, USA |
| Abstract: | An aerostat-borne instrument and sampling method was developed to characterize air samples from area sources, such as emissions from open burning. The 10 kg battery-powered instrument system, termed “the Flyer”, is lofted with a helium-filled aerostat of 4 m nominal diameter and maneuvered by means of one or two tethers. The Flyer can be configured variously for continuous CO2 monitoring, batch sampling of semi-volatile organic compounds (SVOCs), volatile organic compounds (VOCs), black carbon, metals, and PM by size. The samplers are controlled by a trigger circuit to avoid unnecessary dilution from background sampling when not within the source plume. The aerostat/Flyer method was demonstrated by sampling emissions from open burning (OB) and open detonation (OD) of military ordnance. A carbon balance approach was used to derive emission factors that showed excellent agreement with published values. |
| Keywords: | Balloon Air sampling Open burning Open detonation Military ordnance Emission factors |
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