Microelectrode Studies of Aqueous Marine Environments

本研究计划经费由分析和表面化学项目支持。佐斯基教授正在休假，他与罗德岛大学纳拉甘西特湾校区海洋学研究生院的达纳·r·凯斯特教授开始了一项合作。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。本项目将重点研究微电极和微传感器的制备及其在真实海洋环境条件下的功能表征。这些电极将与市售的用于分析物（如氧气）的传感器进行比较，后者采用膜来防止污染。海洋样品中裸金属微电极的行为将使用一系列应用电位脉冲进行表征，这些脉冲设计用于清洁和激活金属表面，然后分析特定的分析物。在整个项目中，应用工作的过程将以基础理论工作为指导，这是PI的专业领域。这项工作的重点是微电极和微传感器的发展，可用于在海洋水生样品中发现的复杂基质。理论和实验工作将一起用于表征这些电分析探针的分析响应，以便开发强大的实时系统并用于海洋化学分析。罗得岛大学的Zoski教授和她的学生将开始与该校海洋学研究生院的Kester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.