Separations of Macromolecules of Environmental Interest by Flow Field-Flow Fractionation

这个职业发展奖将使威尔斯博士获得 场流分析分离领域的新技术 分馏 场流分级能够 解析和表征各种大分子， 胶体和颗粒材料。 该项目的重点是 分离对环境有重要意义的大分子 通过这些方法。 场流分馏将用于 确定溶解的分子量和多分散性 有机大分子并将用于研究 分级大分子之间的相互作用， 人为环境污染物。 这一点 环境意义重大。 这一目标 活动是建立更大的能力，在理论和 场流分级的应用。 这种技术将 用于旨在了解化学的实验 天然存在的大分子，如腐殖酸和富里酸 酸及其成分。 分子量测定 重量和多分散性，以及半制备回收率 将强调这些大分子。 %%% 该职业发展奖将支持以下活动： 拓展威尔斯博士的研究事业潜力 该奖项将 规定在下列领域获得新技能： 丰富自己的研究活动。 这项活动将补充 她以前在政府的专业活动， 行业

This Career Advancement Award will allow Dr. Wells to acquire new skills in the analytical separations area of field flow fractionation. Field flow fractionation is capable of resolving and characterizing a broad range of macromolecular, colloidal, and particulate materials. This project focuses on the separation of large molecules of environmental importance by these methods. Field flow fractionation will be used to determine the molecular weight and polydispersity of dissolved organic macromolecules and will be useful in studies of the interactions between fractionated macromolecules and anthropogenic environmental contaminants. This is of substantial environmental significance. The objectives of this activity are to establish greater competence in the theory and application of field flow fractionation. This technique will be used in experiments aimed at understanding the chemistry of naturally-occurring macromolecules such as humic and fulvic acids and their constituents. Determinations of molecular weight and polydispersity, and semi-preparative recovery of these macromolecules will be emphasized. %%% This Career Advancement Award will support activities that will expand Dr. Wells' research career potential. The award will provide for the acquisiton of new skills in areas that will enrich her research activities. This activity will complement her previous professional activities in government and industry.