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A Simple General Limiting Law for the Overall Decay of Organic Compounds with Global Pollution Potential

机译:具有整体污染潜力的有机化合物整体衰减的简单一般极限法

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摘要

It is rigorously shown that the effective decay rate in the environment of a chemical is between the minimum decay rate in one of its possible compartments and an upper value, which is the weighted-average decay rates in all compartments. The weights are the compartments' volumes and the equilibrium concentrations that would have occurred in the compartment due to transport alone, with no degradation. This upper value is approached, in the sense of a general limiting law, if degradation is much slower than transport. This limiting law, together with an estimate for the spatial range of a persistent chemical, could serve as a minimal base for exposure-based assessment of environmental risk. As a first illustration, the result is applied to DDT and hexachloroethane. A broader group of chemicals will be discussed elsewhere.
机译:严格显示,化学物质环境中的有效衰减率介于其可能的一个隔室中的最小衰减率和上限值之间,该最大值是所有隔室中的加权平均衰减率。重量是隔室的体积和由于单独运输而不发生降解而将在隔室中发生的平衡浓度。如果降解比运输慢得多,则从一般限制法则的意义上讲,可以达到这个上限。该限制定律以及对持久性化学物质空间范围的估计,可以作为基于暴露的环境风险评估的最小基础。首先,将结果应用于滴滴涕和六氯乙烷。更广泛的化学品类别将在其他地方进行讨论。

著录项

  • 来源
    《Environmental Science & Technology》 |1996年第2期|p.586-591|共6页
  • 作者

    U. MUELLER-HEROLD;

  • 作者单位

    Laboratorium fuer Physikalische Chemie, ETH-Zentrum, CH-8092 Zuerich, Switzerland;

  • 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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