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首页> 外文期刊>Environmental Science & Technology >A Chinese Imprint in Insoluble Pollutants Recently Deposited in Central Greenland As Indicated by Lead Isotopes
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A Chinese Imprint in Insoluble Pollutants Recently Deposited in Central Greenland As Indicated by Lead Isotopes

机译：铅同位素表明，中国在格陵兰中部最近沉积的不溶性污染物上的烙印

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摘要

A unique ～10 year record of the lead isotopic composition of airborne insoluble particulate matter deposited in central Greenland was extracted from recent snow layers at NorthGRIP (75.1°N, 042.3°W; elevation 2,959 m), spanning the years 1989-2001. Comparison with lead isotopic signatures of both natural and anthropogenic northern hemisphere (NH) aerosol sources shows that human activities must have accounted for most of the insoluble lead deposited on Greenland during the late 1990s, exceeding by far the natural contribution from large Asian mineral dust inputs. Lead isotopes imply predominance with time of European/Canadian sources over U.S.-derived lead, with an admixed signature typical of Chinese anthropogenic lead sources. The relative contribution of the latter shows a marked seasonal increase during spring. Our record also suggests that China's weight in the overall supply of insoluble pollutants deposited on Greenland was growing over the past decade of the 20th century.
机译：1989-2001年间，从NorthGRIP（75.1°N，042.3°W; 2959 m）的最近降雪层中提取了格陵兰中部沉积的空气传播的不溶性颗粒物的铅同位素组成的约10年独特记录。与天然和人为的北半球（NH）气溶胶来源的铅同位素特征的比较表明，人类活动一定是造成1990年代后期沉积在格陵兰岛上的大部分不溶性铅的原因，远远超过了亚洲大量矿物粉尘投入的自然贡献。 。铅同位素暗示欧洲/加拿大来源的时间要比美国来源的铅占优势，并带有中国人为铅源特有的混合特征。后者的相对贡献显示出春季明显的季节性增加。我们的记录还表明，在20世纪的过去十年中，中国在格陵兰沉积的全部不溶性污染物供应总量中的比重正在增加。

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  • 来源
    《Environmental Science & Technology》 |2014年第3期|1451-1457|共7页
  • 作者

    Aloys J.-M. Bory; Wafa Abouchami; Stephen J. G. Galer; Anders Svensson; John N. Christensen; Pierre E. Biscaye;

  • 作者单位

    Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, United States,Universite Lille 1, UMR-CNRS Geosystemes 8217, 59655 Villeneuve d'Ascq cedex, France;

    Max Planck Institute for Chemistry, 55128 Mainz, Germany;

    Max Planck Institute for Chemistry, 55128 Mainz, Germany;

    Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, 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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