RUI: The Chemistry of Atmospheric Peroxides

RUI：大气过氧化物的化学

• 批准号: 9112698
• 负责人: Judith Weinstein-Lloyd
• 金额: $ 10.23万
• 依托单位: SUNY College at Old Westbury
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-15 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112698&HistoricalAwards=false
• 关键词: RUI; Chemistry; Atmospheric; Peroxides

Peroxides occur in atmospheric rain, fog and snow samples in concentrations as high as several hundred micromolar. In addition to its deleterious effects on human health and plant growth, hydrogen peroxide is generally believed to be the principal oxidant for sulfur dioxide in the Northeastern United States, resulting in enhanced acidity of cloudwater. Recent work has shown that organic peroxides oxidize sulfur dioxide at rates comparable to that of hydrogen peroxide, and some field measurements suggest that organic and hydrogen peroxides may occur in the atmosphere in similar concentrations. In spite of their importance, we are not certain what fraction of total atmospheric peroxides are organic, nor do we have a complete understanding of the processes which produce and destroy them. This grant supports laboratory and field studies aimed at a better understanding of peroxide occurrence and chemistry. Using a newly developed technique, we will analyze precipitation samples for organic and hydrogen peroxide.

过氧化物存在于大气中的雨、雾和雪样本中， 浓度高达几百微摩尔。 在 除了对人类健康和植物的有害影响外， 生长，过氧化氢通常被认为是 美国东北部二氧化硫的主要氧化剂 从而增强了云水的酸度。 最近的工作 已经表明有机过氧化物氧化二氧化硫的速率 可与过氧化氢相比， 测量表明，有机物和过氧化氢可能 在大气中的浓度相似。 尽管 他们的重要性，我们不确定总数的多少部分， 大气过氧化物是有机的，我们也没有一个完整的 了解产生和破坏它们的过程。 该补助金支持实验室和实地研究，旨在 更好地了解过氧化物的发生和化学性质。 使用 一项新开发的技术，我们将分析降水 有机物和过氧化氢的样本