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首页> 外文期刊>Environmental Science & Technology >Characterization of Aircraft Deicer and Anti-icer Components and Toxicity in Airport Snowbanks and Snowmelt Runoff
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Characterization of Aircraft Deicer and Anti-icer Components and Toxicity in Airport Snowbanks and Snowmelt Runoff

机译：飞机除冰剂和除冰剂的特性以及机场积雪和融雪径流中的毒性

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摘要

Snowbank samples were collected from snowbanks within a medium-sized airport for four years to characterize aircraft deicer and anti-icer (ADAF)components and toxicity.Concentrations of ADAF components varied with median glycol concentrations from individual sampling periods ranging from 65 to 5940 mg/L.Glycol content in snowbanks ranged from 0.17 to 11.4% of that applied to aircraft.Glycol,a freezing point depressant,was selectively removed during melt periods before snow and ice resulting in lower glycol concentrations after melt periods.Concentrations of ADAF components in airport runoff were similar during periods of snowmelt as compared to active ADAF application periods;however,due to the long duration of snowmelt events,greater masses of glycol were transported during snowmelt events.Alkylphenol ethoxylates (APEO),selected APEO degradation products,and 4-and 5-methyl-1H-benzotriazole were detected in snowbank samples and airport snowmelt.Concentrations of APEO parent products were greater in snowbank samples than in runoff samples.Relative abundance of APEO degradation products increased in the downstream direction from the snowbank to the outfalls and the receiving stream with respect to APEO parent compounds and glycol.Toxicity in Microtox assays remained in snowbanks after most glycol had been removed during melt periods.Increased toxicity in airport snowbanks as compared to other urban snowbanks was not explained by additional combustion or fuel contribution in airport snow.Organic markers suggestADAF additives as a possible explanation for this increased toxicity.Results indicate that glycol cannot be used as a surrogate for fate and transport of other ADAF components.
机译：从一个中型机场的雪堆中收集了四年的雪堆样品，以表征飞机除冰剂和除冰剂（ADAF）的成分和毒性.ADAF成分的浓度随各个采样周期中乙二醇浓度的中位数变化，范围从65至5940 mg /雪堆中的L.乙二醇含量为飞机上的0.17％至11.4％。在冰雪融化之前，有选择性地去除了凝结点抑制剂Glycol，从而降低了融雪后乙二醇的浓度。与融雪活动期相比，融雪期径流量相似；但是，由于融雪期持续时间长，融雪期运输的乙二醇量更大。烷基酚乙氧基化物（APEO），精选的APEO降解产物和4-在雪堆样品和机场融雪中检测到5-甲基-1H-苯并三唑。APEO母产品的浓度相对于径流样品，APEO降解产物的相对丰度在从雪堆到排污口和接收流的下游方向相对于APEO母体化合物和乙二醇增加。在机场融雪期间被去除了。与其他城市雪堆相比，机场雪堆的毒性增加并未由机场雪中的额外燃烧或燃料贡献来解释。用作其他ADAF组件的命运和运输的替代物。

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  • 来源
    《Environmental Science & Technology》 |2006年第10期|p.3195-3202|共8页
  • 作者

    STEVEN R.CORSI; STEVEN W.GEIS; JORGE E.LOYO-ROSALES; CLIFFORD P.RICE; REBECCA J.SHEESLEY;

  • 作者单位

    U.S.Geological Survey,Middleton,Wisconsin 53562,Wisconsin State Laboratory of Hygiene,Madison,Wisconsin 53718,Department of Civil and Environmental Engineering,University of Maryland,College Park,Maryland 20742,U.S.Department of Agriculture,Beltsvill;

    U.S.Geological Survey,Middleton,Wisconsin 53562,Wisconsin State Laboratory of Hygiene,Madison,Wisconsin 53718,Department of Civil and Environmental Engineering,University of Maryland,College Park,Maryland 20742,U.S.Department of Agriculture,Beltsvill;

    U.S.Geological Survey,Middleton,Wisconsin 53562,Wisconsin State Laboratory of Hygiene,Madison,Wisconsin 53718,Department of Civil and Environmental Engineering,University of Maryland,College Park,Maryland 20742,U.S.Department of Agriculture,Beltsvill;

    U.S.Geological Survey,Middleton,Wisconsin 53562,Wisconsin State Laboratory of Hygiene,Madison,Wisconsin 53718,Department of Civil and Environmental Engineering,University of Maryland,College Park,Maryland 20742,U.S.Department of Agriculture,Beltsvill;

    U.S.Geological Survey,Middleton,Wisconsin 53562,Wisconsin State Laboratory of Hygiene,Madison,Wisconsin 53718,Department of Civil and Environmental Engineering,University of Maryland,College Park,Maryland 20742,U.S.Department of Agriculture,Beltsvill;

  • 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;
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