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.

溴和碘被怀疑是平流层中卤素引起的臭氧损失的主要原因，但由于缺乏对其阴离子和自由基的气相化学和光化学的了解，目前没有包括在大气模型中。该项目将开发和部署先进的质谱学和激光光谱学技术，以便能够精确测量气相碘和溴离子及其氧化物的反应和光反应。这些最先进的反应动力学和产物测量将使准确的化学模型能够预测溴和碘化学对臭氧水平的影响，并将为未来的全球气候模型提供信息。