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首页> 外文期刊>Environmental Science & Technology >Phenol Groups in Northeastern U.S. Submicrometer Aerosol Particles Produced from Seawater Sources
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Phenol Groups in Northeastern U.S. Submicrometer Aerosol Particles Produced from Seawater Sources

机译：美国东北亚从海水源产生的亚微米气溶胶颗粒中的酚类

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摘要

Atmospheric particles collected during the ICARTT 2004 field experiment at ground based sites at Appledore Island (All, New Hampshire, Chebogue Point (CP), Nova Scotia, and aboard the R/V Ronald Brown(RB) were analyzed using Fouriertransform infrared (FTIR) spectroscopy to quantify organic mass (OM) and organic functional groups. Several of these spectra contain a unique absorbance peak at 3500 cm~(-1). Laboratory calibrations identify this peak with phenol functional groups. The phenol groups are associated with seawater-derived emissions based on correlations with tracer volatile organic compounds (VOCs) and ions, and potential source contribution function (PSCF) analysis. On the basis of the measured absorptivities, the project average phenol group concentr ations are 0.24 ±0.18 μg m~(-3) (4% of the total OM) at Al, 0.10 ± 0.6 μg m~(-3) (5% of the total OM) at CP, and 0.08 ± 0.09 μg m~(-3) (2% of the total OM) on board the RB, with detection limits typically between 0.06 and 0.11 μg m~(-3). The spectra were partitioned into three primary factors using positive matrix factorization (PMF) sufficient to explain more than 95% of the measured OM. The fossil fuel combustion factor contributed 40% (Al), 34% (CP), and 43% (RB) of the total OM; the terrestrial biogenic factor contributed 20% (Al), 30% (CP), and 27% (RB). The seawater-derived factor contributed 40% (Al), 36% (CP) and 29% (RBI of the OM and showed similar correlations to tracers as the phenol group.
机译：使用傅立叶变换红外（FTIR）分析了在Appledore岛（全部，新罕布什尔州，Chebogue Point（CP），新斯科舍省和R / V Ronald Brown（RB））地面站点在ICARTT 2004现场试验期间收集的大气颗粒。光谱法对有机物质量和有机官能团进行定量分析，其中一些光谱在3500 cm〜（-1）处有一个唯一的吸收峰，实验室校正表明该峰与酚官能团有关，酚基团与海水衍生相关根据与示踪挥发性有机化合物（VOCs）和离子的相关性以及潜在源贡献函数（PSCF）分析进行的排放，根据测得的吸收率，项目平均苯酚基浓度为0.24±0.18μgm〜（-3 ）（Al占总OM的4％，CP占0.10±0.6μgm〜（-3）（占总OM的5％）和0.08±0.09μgm〜（-3）（占总OM的2％ RB上的OM），检测限通常在0.06和0.11μg之间m〜（-3）。使用正矩阵分解（PMF）将光谱分为三个主要因子，足以解释超过95％的测量OM。化石燃料燃烧因子占总OM的40％（Al），34％（CP）和43％（RB）；陆地生物成因贡献了20％（Al），30％（CP）和27％（RB）。海水来源的因子贡献了OM的40％（Al），36％（CP）和29％（RBI），并且与示踪剂的相关性与酚基团相似。

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  • 来源
    《Environmental Science & Technology》 |2010年第7期|p.2542-2548|共7页
  • 作者

    RANJIT BAHADUR; TIMOTHY UPLINGER; LYNN M. RUSSELL; BARKLEY C. SIVE; STEVEN S. CLIFF; DYLAN B. MILLET; ALLEN GOLDSTEIN; TIMOTHY S. BATES;

  • 作者单位

    Scripps Institution of Oceanography, University of California San Diego, La Jolla California 92093-0221;

    Scripps Institution of Oceanography, University of California San Diego, La Jolla California 92093-0221;

    Scripps Institution of Oceanography, University of California San Diego, La Jolla California 92093-0221;

    Institute for the Study of Earth, Ocean, and Space, University of New Hampshire, Durham New Hampshire 03824;

    Department of Applied Science, University of California, Davis, California 95616;

    Department of Soil, Water, and Climate, University of Minnesota, St. Paul, Minnesota 55108;

    Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720;

    Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, Washington 98115;

  • 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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