2026年6月15日上午，卡内基梅隆大学Neil M. Donahue教授应邀访问山东大学环境研究院，并为第三十一期“山海致青”学术论坛做了题为“Autoxidation and nucleation in the Volatility Basis Set”的学术报告。报告由环境研究院薛丽坤教授主持，来自环境研究院、环境学院及中国海洋大学相关方向的五十余位师生参加了本次学术论坛。
Neil M. Donahue教授首先从全球细颗粒物PM2.5污染对公共健康的危害切入，引出了气溶胶与云相互作用这一气候预测中的重大不确定性问题。随后，他重点阐述了其团队发展的“挥发性基准集（VBS）”模型，生动展示了该模型如何根据有机物的饱和蒸气压与动态行为进行区间划分。微观本质为“二聚体”的超低挥发性有机物（ULVOCs）是推动大气新粒子成核的核心主导者，且其产率和典型VBS累积浓度分布表现出显著的温度依赖性。此外，Neil M. Donahue教授还结合国际顶尖CLOUD实验的最新成果，通过对比动力学限制与饱和比阈值下的成核效率，深入剖析了离子诱导成核与中性成核的效率差异，并揭示了中性成核速率在不同温度下的特征。
报告结束后，参会师生就二次有机气溶胶的微观成核机理、VBS模型的参数化应用以及高氧化有机分子（HOMs）反应机制等前沿问题与Neil M. Donahue教授进行了深入讨论。本次报告帮助师生深入了解了大气有机物氧化及成核的微观机制，帮助师生深入理解该领域的前沿进展，进一步拓宽了我院师生在国际大气化学与气溶胶气候效应交叉研究领域的学术视野。
专家介绍：Dr. Neil M. Donahue is the Thomas Lord University Professor of Chemistry, Chemical Engineering, and Engineering and Public Policy at Carnegie Mellon University. He also serves as the Director of the Steinbrenner Institute for Environmental Education and Research and was the long-time director of CMU's Center for Atmospheric Particle Studies (CAPS). He earned his Ph.D. in Meteorology from the Massachusetts Institute of Technology (MIT) in 1991 and spent nearly a decade as a research scientist at Harvard University before joining the Carnegie Mellon faculty in 2000.
An internationally recognized expert in atmospheric chemistry, Prof. Donahue’s research focuses on the oxidation chemistry of Earth’s atmosphere, specifically looking at how organic compounds behave and evolve. His pioneering work explores the complex lifecycles of organic aerosols (fine particulate matter)—examining how they form, grow, and chemically transform in the atmosphere. Understanding this multi-phase chemistry is crucial, as these microscopic particles significantly influence global climate change and have profound impacts on public health and air quality.
Prof. Donahue is a highly decorated researcher, consistently named among the World’s Most Highly Cited Researchers. His contributions to environmental science have earned him numerous prestigious accolades, including the American Chemical Society (ACS) Award for Creative Advances in Environmental Science & Technology (2023), the David Sinclair Award (2022), and election as a Fellow of both the American Association for Aerosol Research and the American Geophysical Union.
文：隋浩新 李沁怡
图：连曦
