Microelectrode Studies of Aqueous Marine Environments

这项研究计划补助金是由分析和表面化学计划支持的。佐斯基教授正在休假，与罗德岛大学纳拉甘西特湾校区海洋学研究生院的达娜·R·凯斯特教授展开合作。在此期间，她和她的学生一起学习在海洋环境中做分析化学的特殊要求。该项目将专注于制造微电极和微传感器，并在真实的海洋环境条件下表征它们的功能。这些电极将与商业上可用的氧气等分析物传感器进行比较，这些传感器使用膜来保护免受污染。裸露金属微电极在海洋样品中的行为将使用一系列施加的电位脉冲来表征，这些脉冲旨在清洁和激活金属表面，然后对特定分析物进行分析。在整个项目中，这项应用工作的过程将以基础理论工作为指导，这是PI的专长领域。这项工作的重点是开发可用于海洋水生样品中复杂基质的微电极和微传感器。理论和实验工作将一起用来表征这些电分析探针的分析响应，以便开发出强大的实时系统并用于海洋化学分析。罗德岛大学的佐斯基教授和她的学生将开始与该大学海洋学研究生院的凯斯特教授合作，这将产生关于海洋环境化学的更可靠的分析信息。

This Research Planning Grant is supported by the Analytical and Surface Chemistry Program. Professor Zoski is spending a sabbatical initiating a collaboration with Professor Dana R. Kester of the Graduate School of Oceanography at the Narragansett Bay Campus of the University of Rhode Island. During this time she is learning the special requirements of doing analytical chemistry in a marine environment together with her students. This project will focus on fabricating microelectrodes and microsensors and characterizing their function under real marine environmental conditions. These electrodes will be compared with commercially available sensors for analytes such as oxygen that employ membranes to protect against fouling. The behavior of bare metal microelectrodes in marine samples will be characterized using a sequence of applied potential pulses designed to clean and activate the metal surface and then analyze for specific analytes. The course of this applied work will be guided by fundamental theoretical work, the PI's area of expertise, throughout this project. This work focusses on the development of microelectrodes and microsensors that can be used in the complex matrices found in marine aquatic samples. Theoretical and experimental work will be used together to characterize the analytical responses of these electroanalytical probes so that robust, real-time systems can be developed and used for marine chemical analysis. Professor Zoski and her students at the University of Rhode Island will begin a collaboration with Professor Kester at the university's Graduate School of Oceanography that will result in more reliable analytical information about the chemistry of marine environments.