Novel Hydrogen Sulfide Sensors for Portable Monitors

用于便携式监测仪的新型硫化氢传感器

• 批准号: 6807570
• 负责人: Stephen S. Williams
• 金额: $ 37.66万
• 依托单位: SYNKERA TECHNOLOGIES, INC.
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-16 至 2005-09-15
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6807570
• 关键词: air sampling /monitoring; bioengineering /biomedical engineering; biomaterial development /preparation; biomedical equipment development; ceramics; gas analyzer; hydrogen sulfide; miniature biomedical equipment; monitoring device; nonbiomedical equipment; occupational health /safety; oxides; portable biomedical equipment

DESCRIPTION (provided by applicant): Nanomaterials Research's primary objective for this SBIR project is the design, development, and demonstration of a better sensor technology for the detection of hydrogen sulfide Hydrogen sulfide is a colorless, flammable gas that is highly toxic It reacts with the enzymes in the blood that inhibit cell respiration At high concentrations, it can literally shut off the lungs, while lower levels can burn the respiratory tract and cause eye irritation This gas is encountered in a wide range of industries, and a number of standards have been established for occupational exposure The OSHA Permissible Exposure Limit (PEL) is 10 ppm, the Short Term Exposure Limit (STEL) is 15 ppm, and exposures of 300 ppm or greater are considered immediately dangerous to life and health (IDLH) Because of the potential for adverse health effects at low concentrations, the industrial hygiene community is continually seeking improved performance from hydrogen sulfide sensors Specific requirements include reliable and accurate detection in real time, quantitative measurement capabilities, low purchase and life cycle costs, and low power consumption (for portability) Sensors meeting these requirements will find numerous applications within the health and safety field In addition, there are several potential spin-off opportunities in leak detection, emission monitoring, and process control Nanomaterials' approach is to utilize alternative ceramic oxide materials, and a unique multilayer fabrication process to accomplish the objectives of this project The work plan includes optimization of the sensor materials, sensor element fabrication, sensor element packaging, in-house and external evaluation of the sensors, and establishing the foundation for new instrument development The ultimate aim is a low-cost, low-power sensor that can be used in a new type of personal monitor The envisioned monitor is a low profile, credit card sized "smart-card" that can not only alert the wearer when unsafe concentrations have been encountered but also to track cumulative individual worker exposure to a particular toxic gas species.

描述（申请人提供）：纳米材料研究公司在SBIR项目中的主要目标是设计、开发和演示一种更好的传感器技术，用于检测硫化氢硫化氢。硫化氢是一种无色、易燃的气体，具有很高的毒性，它与血液中抑制细胞呼吸的酶发生反应，在高浓度时，它可以关闭肺部，而较低的水平会灼伤呼吸道并引起眼睛刺激。这种气体在广泛的工业中遇到，并且已经建立了许多职业暴露标准。OSHA允许暴露极限（PEL）为10ppm，短期暴露极限（STEL）为15ppm，并且300 ppm或更高的暴露被认为对生命和健康有立即的危险（IDLH）。由于在低浓度下对健康的不利影响的潜在性，工业卫生界一直在寻求改进硫化氢传感器的性能。具体要求包括在真实的时间内进行可靠和准确的检测，定量测量能力、低采购和生命周期成本以及低功耗（便携性）满足这些要求的传感器将在健康和安全领域得到大量应用。此外，在泄漏检测、排放监测、和过程控制纳米材料的方法是利用替代的陶瓷氧化物材料和独特的多层制造工艺来实现本项目的目标。工作计划包括传感器材料的优化，传感器元件的制造，传感器元件的封装，传感器的内部和外部评估，并建立新仪器开发的基础。最终目标是一种低成本、低功率的传感器，该传感器可用于新型的个人监测器中。所设想的监测器是一种低轮廓、信用卡大小的“智能卡”，其不仅可以在遇到不安全浓度时提醒佩戴者，而且还可以跟踪暴露于特定有毒气体种类的累积个体工人。