SGER: Atmospheric Mercury (Hg) Emissions and Speciation during Flame and Smoldering Combustion of Biomass

SGER：生物质火焰和阴燃燃烧过程中的大气汞 (Hg) 排放和形态形成

• 批准号: 0632780
• 负责人: Daniel Obrist
• 金额: $ 3.56万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0632780&HistoricalAwards=false
• 关键词: SGER; Atmospheric; Mercury; Hg; Emissions

This Small Grant for Exploratory Research (SGER) will support the measurement of mercury (Hg) emissions during a multi-investigator aerosol research project at the Fire Science Laboratory in Missoula, MT. Biomass burning is a significant contributor to the global atmospheric Hg budget. This study will investigate the conditions that result in gaseous vs. particle emissions of Hg. It is hypothesized that high-intensity fire conditions will lead to emissions of gaseous elemental Hg, which will add to the atmospheric pool of this long-lived species. Conversely, smoldering fire conditions are expected to lead to the release of oxidized Hg associated with particle emissions that will result in more local pollution.This project will provide educational opportunities for an undergraduate student and a female high school student. The societal impacts will be an improved knowledge of mercury emissions from wildfires, which are expected to become more common in the future due to global warming.

这项探索性研究小额赠款（SGER）将支持在蒙大拿州米苏拉的火灾科学实验室进行的多研究人员气溶胶研究项目中测量汞（Hg）排放。 生物质燃烧是全球大气汞收支的重要贡献者。 本研究将调查导致汞的气态排放与颗粒排放的条件。 据推测，高强度火灾条件将导致气态元素汞的排放，这将增加这种长寿物种的大气库。 相反，阴燃的火灾条件预计会导致汞氧化物的释放，与颗粒排放有关，这将导致更多的当地污染，该项目将为一名大学生和一名女高中生提供教育机会。 社会影响将是对野火汞排放的更好了解，由于全球变暖，预计野火在未来将变得更加普遍。