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Relative Influence of Trans-Pacific and Regional Atmospheric Transport of PAHs in the Pacific Northwest, U.S.

机译：美国西北太平洋多环芳烃的跨太平洋和区域大气传输的相对影响

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摘要

The relative influences of trans-Pacific and regional atmospheric transport on measured concentrations of polycyclic aromatic hydrocarbons (PAHs), PAH derivatives (nitro- (NPAH) and oxy-(OPAH)), organic carbon (OC), and particulate matter (PM) less than 2.5 μm in diameter (PM_(2.5)) were investigated in the Pacific Northwest, U.S. in 2010-2011. Ambient high volume PM_(2.5) air samples were collected at two sites in the Pacific Northwest: (1.) Mount Bachelor Observatory (MBO) in the Oregon Cascade Range (2763 m above sea level (asl)) and 2.) Confederated Tribes of the Umatilla Indian Reservation (CTUIR) in the Columbia River Gorge (CRG) (954 m asl). At MBO, the 1,8-dinitropyrene concentration was significantly positively correlated with the time a sampled air mass spent over Asia, suggesting that this NPAH may be a good marker for trans-Pacific atmospheric transport At CTUIR, NO_x, CO_2, and SO_2 emissions from a 585 MW coal fired power plant, in Boardman OR, were found to be significantly positively correlated with PAH, OPAH, NPAH, OC, and PM_(2.5) concentrations. By comparing the Boardman Plant operational time frames when the plant was operating to when it was shut down, the plant was found to contribute a large percentage of the measured PAH (67%), NPAH (91%), OPAH (54%), PM_(2.5) (39%), and OC (38%) concentrations at CTUIR and the CRG prior to Spring 2011 and likely masked trans-Pacific atmospheric transport events to the CRG. Upgrades installed to the Boardman Plant in the spring of 2011 dramatically reduced the plant's contribution to PAH and OPAH concentrations (by ～72% and ～40%, respectively) at CTUIR and the CRG, but not NPAH, PM_(2.5) or OC concentrations.
机译：跨太平洋和区域大气传输对多环芳烃（PAHs），PAH衍生物（硝基（NPAH）和氧-（OPAH）），有机碳（OC）和颗粒物（PM）的测量浓度的相对影响在2010-2011年间，对美国西北太平洋地区的直径小于2.5μm（PM_（2.5））进行了调查。在太平洋西北部的两个地点收集了大气量高的PM_（2.5）空气样本：（1。）俄勒冈喀斯喀特山脉（海拔2763 m）的学士山天文台（MBO）；以及2.）同盟部落哥伦比亚河峡谷（CRG）的Umatilla印度保留区（CTUIR）（954 m asl）。在MBO，1,8-二硝基py的浓度与在亚洲采样空气的时间显着正相关，表明该NPAH可能是跨太平洋大气运输的良好标志。CTUIR，NO_x，CO_2和SO_2排放发现位于俄勒冈州Boardman的一家585 MW燃煤电厂的PAH，OPAH，NPAH，OC和PM_（2.5）浓度显着正相关。通过比较Boardman工厂运行时和关闭时的运行时间框架，发现该工厂贡献了所测PAH（67％），NPAH（91％），OPAH（54％）， 2011年春季之前，CTUIR和CRG的PM_（2.5）（39％）和OC（38％）浓度可能掩盖了跨太平洋向CRG的大气迁移事件。 2011年春季，对Boardman工厂进行的升级安装大大降低了工厂在CTUIR和CRG下对PAH和OPAH浓度的贡献（分别降低了约72％和约40％），但没有降低NPAH，PM_（2.5）或OC浓度。

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  • 来源
    《Environmental Science & Technology》 |2015年第23期|13807-13816|共10页
  • 作者

    Scott Lafontaine; Jill Schrlau; Jack Butler; Yuling Jia; Barbara Harper; Stuart Harris; Lisa M. Bramer; Katrina M. Waters; Anna Harding; Staci L. Massey Simonich;

  • 作者单位

    Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States;

    Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States;

    Confederated Tribes of the Umatilla Indian Reservation, Pendleton, Oregon 97801, United States;

    Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States;

    Confederated Tribes of the Umatilla Indian Reservation, Pendleton, Oregon 97801, United States,School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon 97331, United States;

    Confederated Tribes of the Umatilla Indian Reservation, Pendleton, Oregon 97801, United States;

    Computational and Statistical Analytics, Pacific Northwest National Laboratory, Richland, Washington 99352, United States;

    Computational Biology and Bioinformatics, Pacific Northwest National Laboratory, Richland, Washington 993S2, United States;

    School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon 97331, United States;

    Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States,Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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