University of Ottawa - Universidad Nacional de Córdoba Joint Research Program in Atmospheric Chemistry

渥太华大学-卡尔多巴国立大学大气化学联合研究项目

• 批准号: 576148-2022
• 负责人: Mayer, PaulP
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747532
• 关键词: University; Ottawa; Universidad; Nacional; de

Air pollution plays a significant role in worldwide morbidity and mortality, being the third most important risk factor behind high blood pressure and smoking. It is estimated to be responsible for 11.65% of all deaths annually. In Canada, air quality is of concern in the Windsor-Quebec City corridor, the Lower Fraser Valley in BC, and in the Southern Atlantic region. The Government of Canada estimates that 14,600 premature deaths per year are linked to air pollution. The number of asthma symptom days in Canada is around 2.7 million with air pollution estimated to cost the Canadian economy $114 billion per year. Ambitious net-zero emission goals are a key component in combating climate change; being able to predict air quality outcomes of reactive organic carbon is crucial for targeting species to improve global and domestic regulation. Over the past 30 years spectroscopy has provided many of the answers to fundamental questions in combustion and atmospheric science, but these studies are best undertaken under single reaction conditions in controlled environments due to the difficulty of deconvolving the spectroscopic signatures of related species in complex mixtures. Conventional reactors are typically incapable of observing low concentration intermediates in the reaction process. Thus, new approaches are required that take advantage of increasing detection selectivity under more relevant reaction conditions. This international collaboration will study the degradation and reactivity of reactive organic carbon from multiple directions: spectroscopy, mass spectrometry and surface science. In this case, the sum will be greater than the parts, with the atmospheric fate of a target system being explored at high and low pressures and from the dilute gas phase to the condensed phase, illuminating the fundamental reactions of these molecules with unprecedented precision.

空气污染在全球发病率和死亡率中发挥着重要作用，是仅次于高血压和吸烟的第三大风险因素。 据估计，它每年造成所有死亡人数的11.65%。 在加拿大，温莎-魁北克市走廊、不列颠哥伦比亚省下弗雷泽河谷和南大西洋地区的空气质量令人担忧。 加拿大政府估计，每年有14，600例过早死亡与空气污染有关。 加拿大的哮喘症状日数约为270万，空气污染估计每年给加拿大经济造成1140亿美元的损失。雄心勃勃的净零排放目标是应对气候变化的关键组成部分;能够预测活性有机碳的空气质量结果对于针对物种改善全球和国内监管至关重要。 在过去的30年里，光谱学为燃烧和大气科学中的许多基本问题提供了答案，但这些研究最好在受控环境中的单一反应条件下进行，因为复杂混合物中相关物种的光谱特征难以解卷积。 常规反应器通常不能观察到反应过程中的低浓度中间体。 因此，需要利用在更相关的反应条件下增加检测选择性的新方法。 这项国际合作将从多个方向研究活性有机碳的降解和反应性：光谱学，质谱学和表面科学。 在这种情况下，总和将大于部分，在高压和低压下以及从稀气相到凝聚相探索目标系统的大气命运，以前所未有的精度阐明这些分子的基本反应。