Studies of Sedimentary Porewater Colloids and Their Impact on the Transport of Organic Chemicals

该项目的目的是比目前更好地了解沉积物间隙水中的天然胶体在天然水域有机化学污染物的运输中所起的作用。这一知识预计将有助于建立改进的化学运输模型，可用于预测往往与湖泊和溪流中的沉积物有关的有机化学物质的命运。本研究涉及的特定化合物是多氯联苯和多芳烃。化学品运输模型的预期改进将有助于澄清关于目标化学品生物吸收和生物降解的可及性的假设。

This project is aimed at obtaining a better understanding than now exists of the role played by natural colloids that are present in interstitial water of sediments in the transport of organic chemical pollutants of natural waters. This knowledge is expected to permit the construction of improved chemical transport models that can be used to predict the fate of organic chemicals that tend to become associated with sediments in lakes and streams. The specific chemical compounds being addressed in this research are the polychlorinated biphenyls and the polyaromatic hydrocarbons. The expected improvements in chemical transport models will assist in clarifying assumptions made regarding the accessibility of the target chemicals to biological uptake and biodegradation.