Microelectrodes for Environmental Monitoring

用于环境监测的微电极

• 批准号: 6548429
• 负责人: William D Timmons
• 金额: $ 16.69万
• 依托单位: EMERGING CONCEPTS, INC.
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-30 至 2004-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6548429
• 关键词: acidity /alkalinity; ammonia; biomedical equipment development; biotransformation; environmental toxicology; hazardous substances; microelectrodes; monitoring device; oxidation reduction reaction; oxygen; soil pollution

DESCRIPTION (provided by applicant):Remediation of Superfund and other hazardous waste sites requires the significant use of monitoring procedures to ensure that environmental conditions required for bioremediation or chemical degradation of specific toxicants are present, and to verify that pollutant removal is occurring. Microelectrodes (tip diameters of l-10 femtomoles, Fm) can be used to make such measurements in a laboratory under highly controlled conditions, but none are commercially available for use in the environment. The goal of this Phase I SBIR is to develop self-contained microelectrodes to be used in the environment to monitor a variety of constituents in contaminated soils and sediments. These devices will contain a new type of microelectrode connected intimately to a microelectronic circuit for amplifying, processing, and transmitting microelectrode signals. Initially, the microelectrodes will be for dissolved oxygen (amperometric), pH and ammonium (potentiometric) and redox-potential, ORP (conductimetric). The techniques will then be modified in Phase II to make a myriad of other microelectrodes. These devices can be used at Superfund sites to monitor the remediation progress, to verify that proper operating conditions are in place, and to ensure that the toxic chemicals are being effectively removed or detoxified, leading to a minimization of public health threats from the Superfund site.

描述（由申请人提供）：超级基金和其他危险废物场地的补救需要大量使用监测程序，以确保存在生物补救或特定有毒物质化学降解所需的环境条件，并核实正在进行污染物清除。 微电极（尖端直径为1 -10飞摩尔，Fm）可用于在实验室中在高度受控的条件下进行这种测量，但没有一种可商购用于环境中。 第一阶段SBIR的目标是开发独立的微电极，用于环境中监测污染土壤和沉积物中的各种成分。 这些设备将包含一种新型的微电极，它与微电子电路紧密连接，用于放大、处理和传输微电极信号。 最初，微电极将用于溶解氧（安培法）、pH和铵（电位法）以及氧化还原电位、ORP（电导法）。 这些技术将在第二阶段进行修改，以制造无数其他微电极。 这些装置可用于超级基金现场，以监测补救进展，核实适当的操作条件是否到位，并确保有毒化学品得到有效清除或解毒，从而最大限度地减少超级基金现场的公共卫生威胁。