VPW: Copper Speciation Studies at Simulated Particulate Surfaces Using Electrochemical and Spectroelectrochemical Methods of Analysis (Analytical/Surface Chemistry)

将开发实验方法，以便能够研究模拟的天然水颗粒界面上的铜形态。提出了一种新的实验模型，可用于现场界面现象的分析测定。该模型由稳定的聚合物微乳液组成，其表面含有固定的反应性配体，旨在模拟有机包覆的天然水颗粒的相关特征。交叉指阵列电极电化学法将被用来测定络合光解生成的铜(I)。这将导致改进的交指阵列方法和铜-氨基酸光解速率的测定。在电化学生成铜(II)后，将发展光谱电化学方法来光学测定络合铜的浓度。这些方法将对表面形态研究具有普遍意义，并将应用于铜-氨基酸络合物的形成和光解的研究。这促进了界面光谱电化学方法和铜-氨基酸络合物在表面的平衡形态的认识。该项目进一步推动了VPW项目的目标，为女性提供通过研究提升她们在科学或工程领域的职业生涯的机会，并通过调查员作为东道主校园榜样的提高知名度，鼓励其他女性在这些领域追求职业生涯。促进第二个目标的拟议活动包括：开发和教授一门新的水生化学课程；举办一场关于环境化学的客座讲座；开设一门新的环境化学课程；以及为学生提供研究指导和指导。

Experimental methods will be developed to enable the study of copper speciation at simulated natural water particulate interfaces. A novel experimental model is presented to permit analytical determination of interfacial phenomena in situ. The model consists of a stable polymer microemulsion containing immobilized reactive ligands on its surface and is intended to simulate pertinent features of organic-coated natural water particulates. Interdigitated array electrode electrochemistry methodology will be developed to determine Cu(I) generated by complex photolysis. This will result in enhanced interdigitated array methodology and determination of copper-amino acid photolysis rates. Spectroelectrochemical methods will be developed to optically determine complexed copper concentrations following electrochemical generation of Cu(II). The methods will have general utility to speciation studies at surfaces and will be applied to the study of copper-amino acid complex formation and photolysis. This advances interfacial spectroelectrochemical methodology and knowledge of equilibrium speciation of copper-amino acid complexes on surfaces. The project furthers VPW program objectives to provide opportunities for women to advance their careers in science or engineering through research, and to encourage other women to pursue careers in these areas through the investigator's enhanced visibility as a role model on the host campus. The proposed activities which contribute to the second objective include: developing and teaching a new course on Aquatic Chemistry; presenting a guest lecture on environmental chemistry; starting a new curriculum in Environmental Chemistry; and providing research guidance and mentoring to students.