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History of Toxic Metal Discharge to Surface Waters of the Aberjona Watershed

机译：向Aberjona流域地表水中排放有毒金属的历史

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摘要

A history of waterborne export of toxic metals from the industrial/residential Aberjona Watershed, north of Boston, MA, has been reconstructed from an analysis of sediment cores from the Upper Mystic Lake, together with historical records of industrial activity on the watershed. The lake sediments exhibit complex profiles of arsenic, cadmium, chromium, copper, lead, and zinc. These profiles are interpretable in terms of historical industrial activities on the watershed and transport via the Aberjona River to the Upper Mystic Lake. High concentrations (in excess of 1000 mg/kg arsenic and chromium) occur in two zones, at depths between 25 and 35 cm and between 50 and 70 cm in the sediments of this lake. The deeper zone corresponds to the early 1900s, a period of intense industrial activity during which chemical and leather industries are known to have made direct discharges of metals to surface waters. Sharp decreases in metals concentrations subsequently occurred as industry declined, and concurrently, much of the watershed was sewered in the mid-1930's. The more recent period of metals transport to the lake, which occurred ca. 1960, evidently was the result of remobilization of wastes deposited on the watershed decades earlier.
机译：根据对上神秘湖的沉积物芯的分析，以及该流域工业活动的历史记录，重建了从马萨诸塞州波士顿北部的工业/住宅区Aberjona流域以水运出有毒金属的历史。湖泊沉积物显示出复杂的砷，镉，铬，铜，铅和锌的轮廓。这些概况可以用流域的历史工业活动和通过阿伯霍纳河到上层神秘湖的运输来解释。高浓度（砷和铬的浓度超过1000 mg / kg）出现在两个区域中，该湖沉积物中的深度在25至35 cm之间和50至70 cm之间。较深的区域对应于1900年代初期，这一时期是工业活动的活跃时期，在此期间，化学和皮革业已将金属直接排放到地表水中。随后，随着工业的衰退，金属浓度急剧下降。与此同时，许多流域在1930年代中期被下水道排污。较新时期的金属运输到湖泊，发生在大约1960年显然是数十年前沉积在分水岭上的废物被重新利用的结果。

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  • 来源
    《Environmental Science & Technology》 |1996年第1期|p.121-128|共8页
  • 作者

    HENRY M. SPLIETHOFF; HAROLD F. HEMOND;

  • 作者单位

    Ralph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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