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首页> 外文期刊>Environmental Science & Technology >Evidence of Global-Scale As, Mo, Sb, and Tl Atmospheric Pollution in the Antarctic Snow
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Evidence of Global-Scale As, Mo, Sb, and Tl Atmospheric Pollution in the Antarctic Snow

机译：南极雪中全球规模的As，Mo，Sb和Tl大气污染的证据

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摘要

We report the first comprehensive and reliable time series for As, Mo, Sb, and Tl in the snowpack from Dome Fuji in the central East Antarctic Plateau. Our results show significant enrichment of these elements due to either anthropogenic activities or large volcanic eruptions during the past 50 years. With respect to the values reported from 1960 to 1964, we observed the maximum increases in crustal enrichment factors (EFs) for As (a factor of ～15), Mo (～4), Sb (～4), and Tl (～2) during the period between the 1970s and 1990s, reflecting the global dispersion of anthropogenic pollutants of these elements, even to the most remote areas on Earth. Such enrichments are likely related to emissions of trace elements from nonferrous metal smelting and fossil fuel combustion processes in South America, especially in Chile. A drastic decrease in the As concentration and its EF values was observed after the year 2000 in response to the introduction of environmental regulations in the 1990s to reduce As emissions from the copper industry, primarily in Chile. The observed decrease suggests that governmental regulations for pollution control are effective in reducing air pollution at both the regional and global level.
机译：我们报告了南极东部中部穹顶富士山雪堆中As，Mo，Sb和Tl的第一个全面而可靠的时间序列。我们的结果表明，在过去50年中，由于人为活动或大量火山喷发，这些元素大量富集。关于1960年至1964年的报告值，我们观察到As（约15因子），Mo（约4），Sb（约4）和Tl（约2）的地壳富集因子（EFs）最大增加。 ）在1970年代至1990年代之间，反映出这些元素的人为污染物在全球范围内的扩散，甚至散布到地球上最偏远的地区。这种浓缩可能与南美特别是智利的有色金属冶炼和化石燃料燃烧过程中的微量元素排放有关。 2000年后，由于1990年代开始实施环境法规以减少主要来自智利的铜行业的As排放，人们观察到As浓度及其EF值急剧下降。观察到的减少表明，政府的污染控制法规在区域和全球范围内都有效地减少了空气污染。

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  • 来源
    《Environmental Science & Technology》 |2012年第21期|11550-11557|共8页
  • 作者

    Sungmin Hong; Tseren-Ochir Soyol-Erdene; Hee Jin Hwang; Sang Bum Hong; Soon Do Hur; Hidaeki Motoyama;

  • 作者单位

    Department of Ocean Sciences, Inha University, 100 Inha-ro, Nam-gu, Incheon 402-751, Korea;

    Korea Polar Research Institute, Songdo Techno Park, 7-50, Songdo-dong, Yeonsu-gu, Incheon 406-840, Korea;

    National Institute of Polar Research, 10-3, Midoricho, Tachikawa, Tokyo 190-8518, Japan;

    National Institute of Polar Research, 10-3, Midoricho, Tachikawa, Tokyo 190-8518, Japan;

    Korea Polar Research Institute, Songdo Techno Park, 7-50, Songdo-dong, Yeonsu-gu, Incheon 406-840, Korea;

    National Institute of Polar Research, 10-3, Midoricho, Tachikawa, Tokyo 190-8518, Japan;

  • 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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