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首页> 外文期刊>Environmental Science & Technology >Dynamic Speciation Analysis and Bioavailability of Metals in Aquatic Systems
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Dynamic Speciation Analysis and Bioavailability of Metals in Aquatic Systems

机译：水生系统中金属的动态形态分析和生物利用度

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摘要

Dynamic metal speciation analysis in aquatic ecosystems is emerging as a powerful basis for development of predictions of bioavailability and reliable risk assessment strategies.A given speciation sensor is characterized by an effective time scale or kinetic window that defines the measurable metal species via their labilities.Here we review the current state of the art for the theory and application of dynamic speciation sensors.We show that a common dynamic interpretation framework,based on rigorous flux expressions incorporating the relevant diffusion and reaction steps,is applicable for a suite of sensors that span a range of time scales.Interpolation from a kinetic spectrum of speciation data is proposed as a practical strategy for addressing questions of bioavailability.Case studies illustrate the practical significance of knowledge on the dynamic features of metal complex species in relation to biouptake,and highlight the limitations of equilibrium-based models.
机译：水生生态系统中的动态金属形态分析正在成为发展生物利用度预测和可靠的风险评估策略的有力基础。给定的形态传感器的特征是有效的时间尺度或动力学窗口，该时间尺度或动力学窗口通过其能力定义了可测量的金属物种。我们回顾了动态形态传感器的理论和应用的最新技术。我们表明，基于严格的通量表达式并结合了相关的扩散和反应步骤的通用动态解释框架适用于跨越提出了利用形态学数据的动态光谱进行插值作为解决生物利用度问题的实用策略。案例研究说明了有关金属复杂物种与生物吸收有关的动态特征的知识的实际意义，并强调了局限性基于平衡的模型。

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  • 来源
    《Environmental Science & Technology》 |2005年第22期|p.8545-8556|共12页
  • 作者

    HERMAN P.VAN LEEUWEN; RAEWYN M.TOWN; JACQUES BUFFLE; ROB F.M.J.CLEVEN; WILLIAM DAVISON;

  • 作者单位

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University,Dreijenplein 6,6703 HB Wageningen,The Netherlands,Department of Chemistry,University of Southern Denmark,Campusvej 55,DK-5230 Odense,Denmark,CABE,Section de Chimie -Sciences;

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University,Dreijenplein 6,6703 HB Wageningen,The Netherlands,Department of Chemistry,University of Southern Denmark,Campusvej 55,DK-5230 Odense,Denmark,CABE,Section de Chimie -Sciences;

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University,Dreijenplein 6,6703 HB Wageningen,The Netherlands,Department of Chemistry,University of Southern Denmark,Campusvej 55,DK-5230 Odense,Denmark,CABE,Section de Chimie -Sciences;

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University,Dreijenplein 6,6703 HB Wageningen,The Netherlands,Department of Chemistry,University of Southern Denmark,Campusvej 55,DK-5230 Odense,Denmark,CABE,Section de Chimie -Sciences;

    Laboratory of Physical Chemistry and Colloid Science,Wageningen University,Dreijenplein 6,6703 HB Wageningen,The Netherlands,Department of Chemistry,University of Southern Denmark,Campusvej 55,DK-5230 Odense,Denmark,CABE,Section de Chimie -Sciences;

  • 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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