Characterization of non-methane volatile organic compounds at swine facilities in eastern North Carolina

被引:44
作者
Blunden, J
Aneja, VP [1 ]
Lonneman, WA
机构
[1] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA
[2] US EPA, Senior Environm Employment Program, Res Triangle Pk, NC 27711 USA
关键词
CAFOs; swine; VOCs; odor; dimethyl sulfide;
D O I
10.1016/j.atmosenv.2005.03.053
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Samples were collected and analyzed in a field study to characterize C-2-C-12 volatile organic compounds (VOCs) emitted at five swine facilities in Eastern North Carolina between April 2002 and February 2003. Two sites employed conventional lagoon and field spray technologies, while three sites utilized various alternative waste treatment technologies in an effort to substantially reduce gaseous compound emissions, odor, and pathogens from these swine facilities. More than 100 compounds, including various paraffins, olefins, aromatics, ethers, alcohols, aldehydes, ketones, halogenated hydrocarbons, phenols, and sulfides were positively identified and quantified by Gas Chromatographic/Flame Ionization Detection (GC/FID) analysis and confirmed by Gas Chromatographic/Mass Spectrometry (GC/MS). GC/MS analysis of one particularly complex sample collected assisted in providing identification and retention times for 17 sulfur-type VOCs including dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide as well as many other VOCs. Highest VOC concentration levels measured at each of the facilities were near the hog barn ventilation fans. Total measured VOCs at the hog barns were typically dominated by oxygenated hydrocarbons (HCs), i.e., ethanol, methanol, acetaldehyde, and acetone. These compounds, in addition to other oxygenated VOCs measured at the various sites, generally represented similar to 37-73% of net total measured VOCs that were emitted from the hog barns at the various sites. Dimethyl sulfide and dimethyl disulfide, both recognized as malodorous compounds, were determined to have higher concentration levels at the barns than the background at every farm sampled with the exception of one farm during the warm sampling season. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6707 / 6718
页数:12
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