Impact of Marcellus Shale Natural Gas Development in Southwest Pennsylvania on Volatile Organic Compound Emissions and Regional Air Quality

被引：75

作者：

Swarthout, Robert F. ^{[1
]}

Russo, Rachel S. ^{[2
]}

Zhou, Yong ^{[2
]}

Miller, Brandon M. ^{[2
]}

Mitchell, Brittney ^{[3
]}

Horsman, Emily ^{[2
]}

Lipsky, Eric ^{[4
]}

McCabe, David C. ^{[5
]}

Baum, Ellen ^{[5
]}

Sive, Barkley C. ^{[2
,6
]}

机构：

[1] Univ New Hampshire, Nat Resources & Earth Syst Sci Program, Durham, NH 03824 USA

[2] Appalachian State Univ, Dept Chem, Boone, NC 28608 USA

[3] Meredith Coll, Dept Chem Phys & Geosci, Raleigh, NC 27607 USA

[4] Penn State Greater Allegheny, Dept Mech Engn, Mckeesport, PA 15132 USA

[5] Clean Air Task Force, Boston, MA 02108 USA

[6] Appalachian State Univ, Environm Sci Program, Boone, NC 28608 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2015年 / 49卷 / 05期

关键词：

NONMETHANE HYDROCARBONS; ATMOSPHERIC CHEMISTRY; METHANE EMISSIONS; PHASE REACTIONS; OZONE; OIL; ACETALDEHYDE; TOXICITY; ALKANES; SITES;

D O I：

10.1021/es504315f

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Marcellus Shale is the largest natural gas deposit in the U.S. and rapid development of this resource has raised concerns about regional air pollution. A field campaign was conducted in the southwestern Pennsylvania region of the Marcellus Shale to investigate the impact of unconventional natural gas (UNG) production operations on regional air quality. Whole air samples were collected throughout an 8050 km(2) grid surrounding Pittsburgh and analyzed for methane, carbon dioxide, and C-1-C-10 volatile organic compounds (VOCs). Elevated mixing ratios of methane and C-2-C-8 alkanes were observed in areas with the highest density of UNG wells. Source apportionment was used to identify characteristic emission ratios for UNG sources, and results indicated that UNG emissions were responsible for the majority of mixing ratios of C-2-C-8 alkanes, but accounted for a small proportion of alkene and aromatic compounds. The VOC emissions from UNG operations accounted for 17 +/- 19% of the regional kinetic hydroxyl radical reactivity of nonbiogenic VOCs suggesting that natural gas emissions may affect compliance with federal ozone standards. A first approximation of methane emissions from the study area of 10.0 +/- 5.2 kg s(-1) provides a baseline for determining the efficacy of regulatory emission control efforts.

引用

页码：3175 / 3184

页数：10