Source Apportionment of Organic Pollutants in the Aquatic Environment Considering Fractionation Between Source and Receptor

9725068 Christensen该奖项旨在支持将水生环境中的有机污染物与其来源联系起来的方法的研究，该方法考虑到来源及其受体之间的分离效应。这个项目的重点将放在主要来自化石燃料不完全燃烧的多环芳香烃和来自湖泊和溪流沉积物的许多工业应用的多氯联苯上。多氯联苯沉积物岩心的来源将是威斯康星州的福克斯河下游，多环芳烃的来源是俄亥俄州的黑河。参考岩心将从密歇根湖和伊利湖获得。研究者的目标是全面开发目标水生污染物的源-受体化学质量平衡模型，将迭代因子分析模型应用于这些污染物的分析资料，并开发一个包含污染物分配到其来源的不确定性的最佳因子分析模型。预计该项目的结果将提供有效减少污染所需的知识。了解环境污染物的运输特征和命运是改变空气、土地和水污染物控制方式的重要步骤。来自城市和农业用地和大气沉积的非点源污染物的出现，使得从本项目中获得的知识可能有助于解决通过确定污染源来减少污染的工程方法，这是通过在源头防止其产生或处理来应对排放的一个步骤。* * *

9725068 Christensen This is an award to support research on methods for relating organic pollutants in the aquatic environment to their sources considering the effects of fractionation between sources and their receptors. Emphasis in this project will be on polycyclic aromatic hydrocarbons principally derived from incomplete combustion of fossil fuels and on polychlorinated biphenyls that are derived from many industrial applications in sediments from lakes and streams. Sources of sediment cores for polychlorinated biphenyls will be the lower Fox River of Wisconsin and for polycyclic aromatic hydrocarbons, the Black River of Ohio. Reference cores will be obtained from Lake Michigan and Lake Erie. The investigator's objectives are to fully develop a source-receptor chemical mass balance model for the target aquatic contaminants, apply an iterative factor analysis model to analytical profiles of these contaminants and develop an optimal factor analytical model incorporating uncertainties for apportionment of the contaminants to their sources. Results of this project are expected to provide knowledge that is needed for effective abatement of pollution. Understanding the transport characteristics and fate of environmental contaminants are important steps in changing the way pollutants of air, land and water are controlled. Emergence of nonpoint sources of pollutants from urban and agricultural land and atmospheric deposition has made knowledge to be gained from this project potentially useful in addressing engineering approaches to abatement of pollution by identification of sources as a step toward coping with emissions by either prevention of their production or treatment at the source. ***