Low-Cost Amperometric Ozone Monitor for Communities Affected by Wildfires

项目摘要/摘要 用于受野火影响的社区的低成本安培臭氧监测仪 野火(森林火灾、生物质燃料火灾等)的频率和严重程度不断上升在美国是一种 重要的环境公共卫生问题。野火期间产生的烟雾在下风向蔓延，暴露出 大约三分之二的美国人对有害于环境空气质量的污染物感兴趣。绝大多数的医疗和医疗人员 科学工作的重点是人口对火灾期间产生的细颗粒物的暴露。 然而，野火产生的臭氧会导致许多肺部健康问题，而且与颗粒物不同， 不能使用HEPA过滤器或N95口罩进行缓解。尽管对健康有负面影响，但几乎没有工具 可用于监测这些自然灾害期间的环境臭氧浓度。电流检测 设备价格昂贵，容易受到干扰，而且在携带时会牺牲精确度。因此， 大多数社区几乎没有关于他们接触的信息，卫生官员无法评估 野火产生的臭氧对健康的影响。 电化学气体传感器技术的最新进展使其成为一种有吸引力的监测选择 环境空气污染物。丝网印刷电极制备及非水研究进展 电解液已经导致了性能可与台式仪器相媲美的低成本设备。利息 在室温下，离子液体(RTILs)作为一种可替代的电解液介质，制造了长期的远程气体 感觉更实用。与水溶液不同，RTIL的蒸汽压可以忽略不计，而且稳定性很高。 因此，它们不会干燥，也不会参与电化学反应。这项计划将开发一种厚膜 利用RTILS对受影响社区的臭氧进行自主监测的电化学传感器 野火。利用吉纳的电化学传感器经验，将广泛制造一种低成本的臭氧检测器 首次向公众开放。吉纳全面开发的监控器的检测极限(LOD)将为 10 ppb，线性范围为10-500 ppb，并防止其他常见野火气体的干扰。一个 将开发相应的便携式仪器，包括电子设备、电池电源和无线数据 供卫生官员、研究人员和受影响社区内的公民使用的通信。

PROJECT SUMMARY/ABSTRACT Low-Cost Amperometric Ozone Monitor for Communities Affected by Wildfires The rising frequency and severity of wildfires (forest fires, biomass fuel fires, etc.) in the United States is an important environmental public health issue. Smoke produced during a wildfire travels far downwind, exposing roughly 2/3 of Americans to pollutants detrimental to ambient air quality. A vast majority of the medical and scientific effort is focused on the populations’ exposure to fine particulate matter produced during these fires. However, ozone from wildfires can lead to many pulmonary health conditions and, unlike particulate matter, cannot be mitigated using HEPA filters or N95 masks. Despite the negative health effects there are few tools available for monitoring ambient ozone concentrations during these natural disasters. Current detection equipment is expensive, prone to interference, and sacrifices accuracy when made portable. Consequently, most communities have little information regarding their exposure and health officials are unable to assess the health impact of ozone produced from wildfires. Recent advancements in electrochemical gas sensor technology make them an appealing option to monitor ambient air pollutants. Developments in screen printed electrode fabrication and research into non-aqueous electrolytes have resulted in low-cost devices with performance comparable to bench top instruments. Interest in room temperature ionic liquids (RTILs) as an alternative electrolyte media has made long-term remote gas sensing more practical. Unlike aqueous electrolytes, RTILs have negligible vapor pressures and high stability so they do not dry out or take part in electrochemical reactions. This program will develop a thick-film electrochemical sensor utilizing RTILs for autonomous monitoring of ozone in communities affected by wildfires. Leveraging Giner’s electrochemical sensor experience a low-cost ozone detector will be made widely accessible to the public for the first time. Giner’s fully developed monitor will have a limit of detection (LOD) of 10 ppb, linear range of 10-500 ppb, and prevent interference from other common wildfire gases. A corresponding portable instrument will be developed to include electronics, battery power, and wireless data communication for use by health officials, researchers, and citizens within affected communities.