Reactivity and photochemistry of halide anions: atmospheric implications

卤化物阴离子的反应性和光化学：大气影响

• 批准号: DP240100612
• 负责人: Prof Stephen Blanksby
• 金额: $ 33.48万
• 依托单位: Queensland University of Technology
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2024
• 资助国家: 澳大利亚
• 起止时间: 2024-01-01 至 2026-12-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP240100612
• 关键词: Reactivity; photochemistry; halide; anions; atmospheric

Bromine and iodine are suspected to be responsible for most of the halogen-induced ozone loss in the stratosphere but are not currently included in atmospheric models due to a paucity of knowledge of the gas-phase chemistry and photochemistry of their anions and radicals. This project will develop and deploy advanced mass spectrometry and laser spectroscopy techniques to enable precision measurements of the reactions and photo-reactions of gas-phase iodide and bromide anions and their oxides. These state-of-the-art measurements of reaction kinetics and products will enable accurate chemical models that predict the impact of bromine and iodine chemistry on ozone levels and will inform future models for global climate.

怀疑溴和碘被造成平流层中卤素诱导的大多数臭氧损失负责，但由于对其阴离子和自由基的气相化学和光化学知识的知识很少，目前尚未包含在大气模型中。该项目将开发和部署晚期质谱和激光光谱技术，以实现对气相碘化物和溴化物阴离子及其氧化物的反应和光反应的精确测量。这些对反应动力学和产品的最先进的测量将实现准确的化学模型，以预测溴和碘化学对臭氧水平的影响，并将为全球气候的未来模型提供信息。