Technology Evaluation Report: Electroanalytical Measurement Techniques for Metals-211 Contaminated Soil Characterization: Battelle Pacific Northwest University and 211 Environmental Technologies Group, Inc

摘要

The US EPA, through the Environmental Technology Verification Program, is working211u001eto accelerate the acceptance and use of innovative technologies that improve the 211u001eway the United States manages its environmental problems. This report describes 211u001ethe results of a field demonstration conducted at contaminated soil sites near 211u001eButte, Montana, in which developers of soil characterization technologies were 211u001einvited to participate. Among these analytical methods, two related techniques 211u001ewere given emphasis, the anodic stripping voltammetry and the potentiometric 211u001estripping analysis, which are used to measure metals in solution. In these 211u001emethods, elements are sequentially stripped in order of their oxidation 211u001epotential. The length of time required to strip the element at a particular 211u001eelectrode is used as a measure of the concentration of the element in solution. 211u001eThe electrochemical stripping analyses were demonstrated along with three other 211u001eparticipating technologies. The incorporation of conventional laboratory analysis 211u001einto the demonstration provided a validated data set that could be used by the 211u001edevelopers to evaluate the efficiency of the technology.