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首页> 外文期刊>Environmental Science & Technology >Atacama Perchlorate as an Agricultural Contaminant in Groundwater: Isotopic and Chronologic Evidence from Long Island, New York
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Atacama Perchlorate as an Agricultural Contaminant in Groundwater: Isotopic and Chronologic Evidence from Long Island, New York

机译：阿塔卡马高氯酸盐作为地下水中的农业污染物：来自纽约长岛的同位素和年代学证据

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摘要

Perchlorate (ClO_4~-) is a common groundwater constituent with both synthetic and natural sources. A potentially important source of ClO_4~- is past agricultural application of ClO_4~-bearing natural NO_3~- fertilizer imported from the Atacama Desert, Chile, but evidence for this has been largely circumstantial. Here we report ClO_4~- stable isotope data (δ~(37)Cl, δ~(18)O, and Δ~(17)O), along with other supporting chemical and isotopic environmental tracer data, to document groundwater ClO_4~-contamination sources and history in parts of Long Island, New York. Sampled groundwaters were oxic and ClO_4~- apparently was not affected by biodegradation within the aquifers. Synthetic ClO_4~- was indicated by the isotopic method in groundwater near a fireworks disposal site at a former missile base. Atacama ClO_4~- was indicated in agricultural and urbanizing areas in groundwaters with apparent ages >20 years. In an agricultural area, ClO_4~- concentrations and ClO_4~-/NO_3~- ratios increased with groundwater age, possibly because of decreasing application rates of Atacama NO_3~- fertilizers and/or decreasing ClO_4~-concentrations in Atacama NO_3~- fertilizers in recent years. Because ClO_4~-/NO_3~- ratios of Atacama NO_3~- fertilizers imported in the past (～2 × 10~(-3) mol mol~(-1)) were much higher than the ClO_4~-/NO_3~- ratio of recommended drinking-water limits (7 × 10~(-5) mol mol~(-1) in New York), ClO_4~- could exceed drinking-water limits even where NO_3~- does not, and where Atacama NO_3~- was only a minor source of N. Groundwater ClO_4~-with distinctive isotopic composition was a sensitive indicator of past Atacama NO_3~- fertilizer use on Long Island and may be common in other areas that received NO_3~- fertilizers from the late 19th century through the 20th century.
机译：高氯酸盐（ClO_4〜-）是一种常见的地下水成分，具有合成来源和天然来源。 ClO_4〜-潜在的重要来源是过去从智利阿塔卡马沙漠进口的带有ClO_4〜的天然NO_3〜肥料的农业应用，但是这一点在很大程度上是间接的。在这里，我们报告ClO_4〜-稳定同位素数据（δ〜（37）Cl，δ〜（18）O和Δ〜（17）O）以及其他支持化学和同位素的环境示踪数据，以记录地下水ClO_4〜-纽约长岛部分地区的污染源和历史。采样的地下水是有氧的，ClO4〜-显然不受含水层中生物降解的影响。同位素法在以前的导弹基地的烟花处理场附近的地下水中用合成的ClO_4〜-表示。 Atacama ClO_4〜-在农业和城市化地区的地下水中显示，年龄大于20岁。在农业地区，ClO_4〜-浓度和ClO_4〜-/ NO_3〜-的比例随地下水年龄的增加而增加，这可能是由于Atacama NO_3〜-肥料的施用量降低和/或Atacama NO_3〜-肥料中的ClO_4〜浓度降低所致。最近几年。因为过去进口的阿塔卡马NO_3〜-肥料的ClO_4〜-/ NO_3〜-比例（〜2×10〜（-3）mol mol〜（-1））远高于ClO_4〜-/ NO_3〜-比例在建议的饮用水限值（纽约为7×10〜（-5）mol mol〜（-1））中，即使NO_3〜-没有，阿塔卡马州NO_3〜-也可能超过ClO_4〜-只是少量的氮源。地下水ClO_4〜-具有独特的同位素组成，是长岛阿塔卡马州过去使用过NO_3〜-肥料的敏感指标，在其他从19世纪末开始使用NO_3〜-肥料的地区可能很常见。 20世纪。

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  • 来源
    《Environmental Science & Technology》 |2009年第15期|5619-5625|共7页
  • 作者

    JOHN KARL BOEHLKE; PAUL B. HATZINGER; NEIL C. STUHCHIO; BAOHUA GU; IRENE ABBENE; STANLEY J . MROCZKOWSKI;

  • 作者单位

    Shaw Environmental, Inc., Lawrenceville, New Jersey 08648;

    Shaw Environmental, Inc., Lawrenceville, New Jersey 08648;

    Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois 60607;

    Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381;

    U.S. Geological Survey, Coram, New York 11727;

    U.S. Geological Survey. 431 National Center, Reston, Virginia 20192;

  • 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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  • 正文语种 eng
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