Anomalous isotope effects in atmospheric ozone and carbon dioxide

大气臭氧和二氧化碳中的异常同位素效应

• 批准号: DP0453162
• 负责人: Dr Vanessa Haverd
• 金额: $ 17.48万
• 依托单位: University of Wollongong
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-02-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0453162
• 关键词: Anomalous; isotope; effects; atmospheric; ozone

The anomalous isotopic composition of atmospheric ozone, which has been a puzzle for over twenty years, will be investigated by laboratory and atmospheric measurements. An understanding of the source of this anomaly and its effect on the isotopic composition of other trace atmospheric gases, especially CO2, would provide unique opportunities for constraining the tropospheric and stratospheric ozone budgets and determining the history of a particular air mass. The method of detection will be high resolution FTIR spectroscopy which, in contrast to traditional mass-spectrometric methods, provides information about the position of the heavy atom in an enriched ozone molecule and requires no sample preparation.

大气臭氧的异常同位素组成是一个困扰了二十多年的难题，将通过实验室和大气测量来研究。了解这种异常现象的来源及其对其他微量大气气体，特别是二氧化碳的同位素组成的影响，将为限制对流层和平流层臭氧收支和确定特定气团的历史提供独特的机会。检测方法将是高分辨率傅里叶变换红外光谱法，与传统的质谱法不同，该方法提供了关于浓缩臭氧分子中重原子位置的信息，并且不需要样品制备。