主要研究方向为大气污染物环境与源排放特征、污染来源成因、人体暴露和健康效应；大气微塑料的变化特征及其对健康的危害；固体燃料燃烧源排放相关暴露人群流行病学研究；大气汞等重金属污染的变化与来源解析等。

西安交通大学能动学院环境系教授，博士生导师。主持国家自然科学基金3项、国家重点研发计划项目子课题1项、陕西省杰出青年基金1项、陕西省重点研发计划等项目。发表SCI论文150余篇，被SCI引用4500余次，高被引H-index为38。以第一/通讯作者在本领域国际主流期刊发表SCI论文45篇，引用950余次。授权专利7项，软件著作权3项。参与编写专著译著4本。作为执笔人制定陕西省地方标准1项。任中国颗粒学会青年理事、中国颗粒学会气溶胶专委会秘书长、陕西省发改委资源节约与环境保护领域专家库专家，并担任The Innovation、Particuology、环境卫生学杂志等期刊青年编委等。

1、家用固体燃料燃烧源中含氮有机物居民暴露健康损伤机理研究，国家自然科学基金面上项目，2023-2026，项目负责人；

2、居民燃烧源排放含氮有机气溶胶的人体暴露健康损伤机理，陕西省自然科学基础研究计划杰出青年科学基金，2023-2025，项目负责人；

3、重点区域城市和城市群大气环境气候影响机制及适应对策，国家重点研发计划，2022-2027，子课题负责人；

4、关中农村生物质燃烧排放棕碳气溶胶的人体暴露健康效应，国家自然科学基金面上项目，2019-2022，项目负责人；

5、关中农村家庭取暖排放多环芳烃的特征与人体暴露评价，国家自然科学基金青年科学基金项目， 2016-2018，项目负责人；

6、关中大气污染物来源解析技术体系建立与应用，陕西省重点研发计划，2019-2022，课题负责人；

7、陕西关中农村人体暴露PM2.5的流行病学及毒性效应研究，陕西省自然科学基础研究计划-重点项目，2019-2022，项目负责人；

8、陕西关中城市群大气污染联防联控技术集成与应用示范，国家重点研发计划，2017-2021，子课题负责人；

9、咸阳市高分辨率大气工业污染源排放清单编制，一市一策大气污染控制项目，2019-2020，课题负责人；

10、餐饮业油烟工程技术指南编制，陕西省环境调查评估中心项目，2018-2019，项目负责人。

代表性论文：

1)Hongmei Xu, Jeroen E. Sonke*, Benjamin Guinot, Xuewu Fu, Ruoyu Sun, Aurélie Lanzanova, Frédéric Candaudap, Zhenxing Shen, Junji Cao*. Seasonal and annual variations in atmospheric Hg and Pb isotopes in Xi’an, China. Environmental Science & Technology, 2017, 51: 3759-3766.

2)Hongmei Xu*, Jean-François Léon, Cathy Liousse*, Benjamin Guinot, Véronique Yoboué, Aristide Barthélémy Akpo, Jacques Adon, Kin Fai Ho, Steven Sai Hang Ho, Lijuan Li, Eric Gardrat, Zhenxing Shen, Junji Cao. Personal exposure to PM2.5 emitted from typical anthropogenic sources in southern West Africa: chemical characteristics and associated health risks. Atmospheric Chemistry and Physics, 2019, 19: 6637-6657.

3)Hongmei Xu*, Yunxuan Gu, Yunlong Bai, Dan Li, Meixuan Liu, Zexuan Wang, Qian Zhang, Jian Sun, Zhenxing Shen. Exploration and comparison of the relationship between PAHs and ROS in PM2.5 emitted from multiple anthropogenic sources in the Guanzhong Plain, China. Science of The Total Environment, 915 (2024): 170229.

4)Hongmei Xu*, Junji Cao*, Judith C. Chow, R.-J. Huang, Zhenxing Shen, L. W. Antony Chen, Kin Fai Ho, John G. Watson. Inter-annual variability of wintertime PM2.5 chemical composition in Xi’an, China: Evidences of changing source emissions. Science of the Total Environment, 2016, 545-546: 546-555.

5)Hongmei Xu, Steven Sai Hang Ho, Meiling Gao, Junji Cao*, Benjamin Guinot, Kin Fai Ho, Xin Long, Jingzhi Wang, Zhenxing Shen, Suixin Liu, Chunli Zheng, Qian Zhang. Microscale spatial distribution and health assessment of PM2.5-bound Polycyclic Aromatic Hydrocarbons (PAHs) at nine communities in Xi’an, China. Environmental Pollution, 2016, 218: 1065-1073.

6)Hongmei Xu*, Rong Feng, Zexuan Wang, Ningning Zhang, Renjian Zhang, Kailai He, Qiyuan Wang, Qian Zhang, Jian Sun, Bin Zhang, Zhenxing Shen, Steven Sai Hang Ho, Junji Cao. Environmental and health risks of VOCs in tunnel in Xi’an, Northwest China: implication of impact from new energy vehicles. Environmental Pollution, 2021, 282: 117057.

7)Hongmei Xu, Junji Cao*, Kin Fai Ho, H. Ding, Yongming Han, Gehui Wang, Judith C. Chow, John G. Watson, Steve D. Khol, Juan Qiang, Wentao Li. Lead concentration in fine particulate matter after phasing out leaded gasoline in Xi’an, China. Atmospheric Environment, 2012, 46: 217-224.

8)Hongmei Xu*, Yaqi Li, Rong Feng, Kailai He, Steven Sai Hang Ho, Zexuan Wang, Kin Fai Ho, Jian Sun, Jiawen Chen, Yao Wang, Ying Liu, Feiyu Wang, Wanqi Xue, Linli Qu, Zhenxing Shen*, Junji Cao. Comprehensive characterization and health assessment of occupational exposures to volatile organic compounds (VOCs) in Xi'an, a major city of northwestern China. Atmospheric Environment, 2021, 246: 118085.

9)Rong Feng,Hongmei Xu*, Yunxuan Gu, Zexuan Wang, Bei Han, Jian Sun, Suixin Liu, Hongwei Lu, Steven Sai Hang Ho, Zhenxing Shen, Junji Cao*. Variations of personal exposure to particulate nitrated phenols from heating energy renovation in China: the first assessment on associated toxicological impacts with particle size distributions. Environmental Science & Technology, 2022, 56: 3974−3983.

10)Zexuan Wang,Hongmei Xu*, Yunxuan Gu, Rong Feng, Ningning Zhang, Qiyuan Wang, Suixin Liu, Qian Zhang, Pingping Liu, Linli Qu, Steven Sai Hang Ho, Zhenxing Shen, Junji Cao. Chemical characterization of PM2.5 in heavy polluted industrial zones in the Guanzhong Plain, northwest China: Determination of fingerprint source profiles. Science of the Total Environment, 840 (2022): 156729.

获得奖励：

曾获陕西省杰出青年基金

中国颗粒学会青年颗粒学奖

陕西省科学技术奖二等奖（R4）

陕西高等学校科学技术研究优秀成果奖一等奖3项（R1）

中国颗粒学会自然科学奖二等奖（R2）

第五届“中国气溶胶青年科学家奖”等。