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Chemodynamics and Bioavailability in Natural Waters

机译:天然水域中的化学动力学和生物利用度

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摘要

Bioavailability of various aquatic compounds is significantly dependent on the fundamentals of physical chemistry.rnUntil the 1980s, it was largely assumed that chemical reactions in environmental systems were at equilibrium. Over the past 30 years, however, chemical kinetics have been shown to limit the rates of a large number of natural processes(1).For example, slow physicochemical reactions are now known to play key roles in weathering processes (e.g., dissolution, nucleation), water treatment (e.g., coagulation/ flocculation), environmental degradation of organics, colloidal fate (e.g., aggregation), chemical fluxes at oxic-anoxic boundaries, etc. In that context, the notion of "chemodynamics" will be used in the broad sense to describe any process that involves the coupling of reactant transport to the chemical reaction(s).
机译:各种水生化合物的生物利用度在很大程度上取决于物理化学的基本原理。直到1980年代,人们一直认为环境系统中的化学反应处于平衡状态。然而,在过去30年中,化学动力学已显示出限制了许多自然过程的速率(1)。例如,目前已知缓慢的理化反应在风化过程中起着关键作用(例如溶解,成核) ),水处理(例如,凝结/絮凝),有机物的环境降解,胶体命运(例如,聚集),在氧-缺氧边界的化学通量等。在这种情况下,“化学动力学”的概念将用于描述任何涉及反应物传输与化学反应耦合的过程的广义描述。

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  • 来源
    《Environmental Science & Technology》 |2009年第19期|7170-7174|共5页
  • 作者单位

    Analytical and Biophysical Environmental Chemistry,University of Geneva;

    Department of Chemistry, University of Montreal;

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University (The Netherlands);

  • 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
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