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首页> 外文期刊>Environmental toxicology and chemistry >A REVIEW AND COMPARISON OF MODELS FOR PREDICTING DYNAMIC CHEMICAL BIOCONCENTRATION IN FISH
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A REVIEW AND COMPARISON OF MODELS FOR PREDICTING DYNAMIC CHEMICAL BIOCONCENTRATION IN FISH

机译:鱼类动态化学生物富集模型的回顾与比较

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Over the past 20 years, a variety of models have heen developed to simulate the bioconcentration of hydrophobic organic chemicals by fish. These models differ not only in the processes they address but also in the way a given process is described. Processes described by these models include chemical diffusion through the gill's interlamellar water, epithelium, and lamellar blood plasma; advective chemical transport to and from the gill by ventilation and perfusion, respectively; and internal chemical deposition by thermodynamic partitioning to lipid and other organic phases. This article reviews the construction and associated assumptions of 10 of the most widely cited fish bioconcentration models. These models are then compared with respect to their ability to predict observed uptake and elimination rates using a common database for those model parameters that they have in common. Statistical analyses of observed and predicted exchange rates reveal that rates predicted by these models can be calibrated almost equally well to observed data. This fact is independent of how well any given model is able to predict observed exchange rates without calibration. The importance of gill exchange models and how they might by improved are also discussed.
机译:在过去的20年中,已经开发出各种模型来模拟鱼类对疏水性有机化学物质的生物浓缩。这些模型不仅在它们处理的过程上有所不同,而且在描述给定过程的方式上也有所不同。这些模型描述的过程包括通过chemical的层间水,上皮和层状血浆的化学扩散;对流化学物质分别通过通风和灌注进出ill。通过热力学分配到脂质和其他有机相进行内部化学沉积。本文回顾了被广泛引用的10种鱼类生物富集模型的构造和相关假设。然后使用一个公共数据库针对这些模型共有的模型参数,比较这些模型的预测观测摄取和消除速率的能力。对观察到的汇率和预测汇率的统计分析表明,这些模型所预测的汇率几乎可以与观察到的数据很好地进行校准。这个事实与任何给定模型无需预测就能很好地预测观察到的汇率无关。还讨论了g交换模型的重要性以及如何改进它们。

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