In-situ Measurement of Dissolved Metals in Ground Water Using Microfabricated Electrochemical Sensors

该研究将开发一种新的分析工具和技术，允许对地下水中溶解金属进行原位分析。该项目包括通过以一种新颖的方式应用众所周知的极谱原理来实现对溶解金属的分析。详细介绍了这种新的分析技术，并在专利部分进行了描述。ıPS-1 !对于溶解金属的原位分析，该程序将比标准可用的电化学技术表现得更好，原因如下：(1)通过首先从待分析的水中排出电极毒物来防止与电极中毒相关的问题；(2)工作电极表面的大部分物种间相互作用和干扰被抑制；(3)经典极谱技术遇到的许多约束被抑制；(4)检测水平低；(5)更好地分离电镀物。小尺寸将允许部署的设备直接作为原位传感器支持的大多数可用的商业探头能够容纳一个几厘米大小的设备。使用微加工技术生产传感器将以每单位低成本提供新的精密分析设备。

The research will develop a new analytical tool and technique permitting in-situ analysis of dissolved metals in ground water. The project consists of realizing the analysis of dissolved metals by applying the well known principles of polarography in a novel manner. The details of this new analytical technology are presented and described in the proprietary section. ıPS-1!. The program will perform better than standard available electrochemical techniques for the in-situ analysis of dissolved metals for the following reasons: (1) problems associated with electrode poisoning are prevented by first exhausting the electrodes poisons from the water to be analyzed; (2) most between species interactions and interferences at the surface of the working electrodes are suppressed; (3) many of the constraints encountered using classical polarographic techniques are suppressed; (4) low detection levels are achieved; (5) better separation of electroplatable species. The small size will permit deployment of the devices directly as in-situ sensors supported by most available commercial probes capable of housing a device a few centimeters in size. The use of microfabrication for the production of the sensors will provide new sophisticated analytical devices at low cost per unit.