研資局高級研究學者計劃 | 教資會及研資局獎項

Biography
(只提供英文版)

Chair Professor in Department of Chemistry at The Hong Kong University of Science and Technology
Research interests include atmospheric analytical chemistry; development of analytical methods for atmospheric measurements; chemical characterization of urban and continental aerosols; transformation of organic compounds in air; source apportionment of air pollutants; and kinetic modeling of atmospheric reactions
SRFS project — aims to employ advanced mass spectrometry and chemometric analysis to study these elements at multiple levels, from broad organic/inorganic separation with high mass completeness to detailed molecular identification. By integrating these multi-level techniques, the research will provide a wholistic picture of aerosol chemical composition and uncover previously undetected molecular species. This strategy has the potential to make significant and innovative advances in aerosol chemistry and the broader field of environmental chemistry.
Awards and Honours:
- RGC Senior Research Fellow (2025)
- Fellow, Asian Aerosol Research Assembly (AARA) (2022)
- Distinguished alumna award, Department of Environmental Sciences & Engineering, Univ. North Carolina-Chapel Hill (2021)
- School of Science Service Award, HKUST (2018)
- Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS)/Gordon Research Conference (1997)

Project Title
(只提供英文版)

Analytical Chemistry of Multi-level Chemical Speciation of C, N, and S in Atmospheric Aerosol Samples

讚詞

理解大氣氣溶膠組成對預測環境與健康影響及制定減緩策略至關重要。完整評估需同時達成全面核算總質量（質量完整性）與分子層級的詳細識別；過去研究少能兼顧，尤忽視質量完整性。

本計畫結合先進質譜與化學計量學，多層次表徵碳（C）、氮（N）、硫（S）：從高質量覆蓋的有機/無機分離起步，進而以離子片段為基礎的多分類形態分析與超高解析質譜，最後透過串聯色譜–質譜實現對單分子的鑒定。

這項計畫將聚焦三項挑戰：
(1) 有機/無機二分形態分析工具不足，限制全面元素分析；這項計畫將開發可同時進行 C/N/S 二分形態分析的原型儀器;
(2) 基於離子碎片的多分類形態分析在真實氣溶膠上的質量與元素校準不足；這項計畫將建立多樣化「參考混合物」強化校準; 及
(3) 現行技術未能捕捉的未知分子所占比例尚未量化；這項計畫將運用多層次表徵方法估算「未知」部分範圍與特徵。

這項計畫最終目標是建立多層次化學形態分析的框架，同時實現全面質量覆蓋與高度的分子特異性；憑藉團隊數十年經驗與先進工具，本研究將彌補關鍵知識缺口，推動大氣氣溶膠化學與環境化學的發展。