Faculty Profiles - YU Xu | The Hong Kong University of Science and Technology

Xu YU
余欻

PhD in Environmental Science
Graduate University of the Chinese Academy of Sciences, 2019

Research Assistant Professor
Division of Environment and Sustainability

(852) 3469 2556
yuxu@ust.hk
Room 4363
Personal Web

ORCID

0000-0001-5774-6135

Scopus ID

57198885825

Research Interest Publications Projects

Research Interest

Aerosol chemistry
Air pollution
Atmospheric applications
Environmental chemistry/instrumentation
Atmospheric science

Publications

All Years 16 2025 0 2024 2 2023 4 2022 1 2021 1 2020 4 2019 4

2024 2

Characteristics of aerosol aminiums over a coastal city in North China: Insights from the divergent impacts of marine and terrestrial influences

Science of the Total Environment, v. 918, March 2024, article number 170672
Yang, Yiyan; Sun, Mingge; Wu, Guanru; Qi, Yuxuan; Zhu, Wenqing; Zhao, Yunhui; Zhu, Yujiao; Li, Wenshuai; Zhang, Yanjing; Wang, Nana; Sheng, Lifang; Wang, Wencai; Yu, Xu; Yu, Jianzhen; Yao, Xiaohong; Zhou, Yang
Article

New measurements reveal a large contribution of nitrogenous molecules to ambient organic aerosol

npj Climate and Atmospheric Science, v. 7, (1), March 2024, article number 72
Yu, Xu; Li, Qianfeng; Liao, Kezheng; Li, Yumin; Wang, Xinming; Zhou, Yang; Liang, Yongmei; Yu, Jianzhen
Article

2023 4

Abundance and sources of organic nitrogen in fine (PM_2.5) and coarse (PM_2.5–10) particulate matter in urban Hong Kong

Science of the Total Environment, v. 901, November 2023, article number 165880
Yu, Xu; Wong, Yee Ka; Yu, Jianzhen
Article

Dissecting the contributions of organic nitrogen aerosols to global atmospheric nitrogen deposition and implications for ecosystems

National Science Review, v. 10, (12), December 2023, article number nwad244
Li, Yumin; Fu, Tzung-May; Yu, Jianzhen; Yu, Xu; Chen, Qi; Miao, Ruqian; Zhou, Yang; Zhang, Aoxing; Ye, Jianhuai; Yang, Xin; Tao, Shu; Liu, Hongbin; Yao, Weiqi
Article

First Online Observation of Aerosol Total Organic Nitrogen at an Urban Site: Insights Into the Emission Sources and Formation Pathways of Nitrogenous Organic Aerosols

Journal of Geopyhsical Research: Atmospheres, v. 128, (19), October 2023, article number e2023JD038921
Yu, Xu; Zhou, Min; Li, Jinjian; Qiao, Liping; Lou, Shengrong; Han, Wenye; Zhang, Zijing; Huang, Cheng; Yu, Jianzhen
Article

Important Roles and Formation of Atmospheric Organosulfates in Marine Organic Aerosols: Influence of Phytoplankton Emissions and Anthropogenic Pollutants

Environmental Science & Technology, v. 57, (28), July 2023, p. 10284-10294
Wang, Yujue; Zhang, Yanjing; Li, Wenshuai; Wu, Guanru; Qi, Yuxuan; Li, Shubin; Zhu, Wenqing; Yu, Jianzhen; Yu, Xu; Zhang, Hong-Hai; Sun, Jun; Wang, Wencai; Sheng, Lifang; Yao, Xiaohong; Gao, Huiwang; Huang, Cheng; Ma, Yingge; Zhou, Yang
Article

2022 1

Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection

Atmospheric Environment, v. 271, 15 February 2022, article number 118905
Li, Jinjian; Yu, Xu; Li, Qianfeng; Wang, Shan; Cheng, Yuk Ying; Yu, Jianzhen
Article

2021 1

Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection

Environmental Science & Technology, v. 55, (17), September 2021, p. 11579-11589
Yu, Xu; Li, Qianfeng; Ge, Yao; Li, Yumin; Liao, Kezheng; Huang, Xiaohui Hilda; Li, Jinjian; Yu, Jianzhen
Article

2020 4

Dramatic increase in reactive volatile organic compound (VOC) emissions from ships at berth after implementing the fuel switch policy in the Pearl River Delta Emission Control Area

Atmospheric Chemistry and Physics, v. 20, (4), February 2020, p. 1887-1900
Wu, Zhengfeng; Zhang, Yanli; He, Junjie; Chen, Hongzhan; Huang, Xueliang; Wang, Yujun; Yu, Xu; Yang, Weiqiang; Zhang, Runqi; Zhu, Ming; Li, Sheng; Fang, Hua; Zhang, Zhou; Wang, Xinming
Article

Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging

Journal of Geophysical Research: Atmospheres, v. 125, (18), 31 Agust 2020, article number e2020JD032699
Yu, Xu; Li, Dejun; Zhang, Guohua; Zhou, Huaishan; Li, Sheng; Song, Wei; Zhang, Yanli; Bi, Xinhui; Yu, Jianzhen; Wang, Xinming
Article

PM_2.5-bound unresolved complex mixtures (UCM) in the Pearl River Delta region: Abundance, atmospheric processes and sources

Atmospheric Environment, v. 226, April 2022, article number 117407
Fang, Hua; Lowther, Scott D.; Zhu, Ming; Pei, Chenglei; Li, Sheng; Fang, Zheng; Yu, Xu; Yu, Qingqing; Wang, Yujun; Zhang, Yanli; Jones, Kevin C.; Wang, Xinming
Article

Wet and Dry Nitrogen Depositions in the Pearl River Delta, South China: Observations at Three Typical Sites With an Emphasis on Water-Soluble Organic Nitrogen

Journal of Geophysical Research: Atmospheres, v. 125, (3), February 2020, article number e2019JD030983
Yu, Xu; Pan, Yuepeng; Song, Wei; Li, Sheng; Li, Dan; Zhu, Ming; Zhou, Huaishan; Zhang, Yanli; Yu, Jianzhen; Wang, Xinming
Article

2019 1

Organosulfur Compounds Formed from Heterogeneous Reaction between SO₂ and Particulate-Bound Unsaturated Fatty Acids in Ambient Air

Environmental Science and Technology Letters, v. 6, (6), June 2019, p. 318-322
Zhu, Ming; Jiang, Bin; Li, Sheng; Yu, Qingqing; Yu, Xu; Zhang, Yanli; Bi, Xinhui; Yu, Jianzhen; George, Christian; Yu, Zhiqianng; Wang, Xinming
Article

2018 2

Fast Screening Compositions of PM_2.5 by ATR-FTIR: Comparison with Results From IC andOC/EC analyzers

Journal of Environmental Sciences, v. 71, September 2018, p. 76-88
Yu, Xu; Song, Wei; Yu, Qingqing; Li, Sheng; Zhu, Ming; Zhang, Yanli; Deng, Wei; Yang, Weiqiang; Huang, Zhonghui; Bi, Xinhui; Wang, Xinming
Article

Filter-based measurement of light absorption by brown carbon in PM_2.5 in a megacity in South China

Science of the Total Environment, v. 633, August 2018, p. 1360-1369
Li, Sheng; Zhu, Ming; Yang, Weiqiang; Tang, Mingjin; Huang, Xuang; Yu, Yuegang; Fang, Hua; Yu, Xu; Yu, Qingqing; Fu, Xiaoxin; Song, Wei; Zhang, Yanli; Bi, Xinhui; Wang, Xinming
Article

2017 1

Water soluble organic nitrogen (WSON) in ambient fine particles over a megacity in South China: Spatiotemporal variations and source apportionment

Journal of Geophysical Research: Atmospheres, v. 122, (23), December 2017, p. 13045-13060
Yu, Xu; Yu, Qingqing; Zhu, Ming; Tang, Mingjin; Li, Sheng; Yang, Weiqiang; Zhang, Yanli; Deng, Wei; Li, Guanghui; Yu, Yuegang; Huang, Zhonghui; Song, Wei; Ding, Xiang; Hu, Qihou; Li, Jun; Bi, Xinhui; Wang, Xinming
Article

Article 2

Characteristics of aerosol aminiums over a coastal city in North China: Insights from the divergent impacts of marine and terrestrial influences

Science of the Total Environment, v. 918, March 2024, article number 170672
Yang, Yiyan; Sun, Mingge; Wu, Guanru; Qi, Yuxuan; Zhu, Wenqing; Zhao, Yunhui; Zhu, Yujiao; Li, Wenshuai; Zhang, Yanjing; Wang, Nana; Sheng, Lifang; Wang, Wencai; Yu, Xu; Yu, Jianzhen; Yao, Xiaohong; Zhou, Yang

New measurements reveal a large contribution of nitrogenous molecules to ambient organic aerosol

npj Climate and Atmospheric Science, v. 7, (1), March 2024, article number 72
Yu, Xu; Li, Qianfeng; Liao, Kezheng; Li, Yumin; Wang, Xinming; Zhou, Yang; Liang, Yongmei; Yu, Jianzhen

Article 4

Abundance and sources of organic nitrogen in fine (PM_2.5) and coarse (PM_2.5–10) particulate matter in urban Hong Kong

Science of the Total Environment, v. 901, November 2023, article number 165880
Yu, Xu; Wong, Yee Ka; Yu, Jianzhen

Dissecting the contributions of organic nitrogen aerosols to global atmospheric nitrogen deposition and implications for ecosystems

National Science Review, v. 10, (12), December 2023, article number nwad244
Li, Yumin; Fu, Tzung-May; Yu, Jianzhen; Yu, Xu; Chen, Qi; Miao, Ruqian; Zhou, Yang; Zhang, Aoxing; Ye, Jianhuai; Yang, Xin; Tao, Shu; Liu, Hongbin; Yao, Weiqi

First Online Observation of Aerosol Total Organic Nitrogen at an Urban Site: Insights Into the Emission Sources and Formation Pathways of Nitrogenous Organic Aerosols

Journal of Geopyhsical Research: Atmospheres, v. 128, (19), October 2023, article number e2023JD038921
Yu, Xu; Zhou, Min; Li, Jinjian; Qiao, Liping; Lou, Shengrong; Han, Wenye; Zhang, Zijing; Huang, Cheng; Yu, Jianzhen

Important Roles and Formation of Atmospheric Organosulfates in Marine Organic Aerosols: Influence of Phytoplankton Emissions and Anthropogenic Pollutants

Environmental Science & Technology, v. 57, (28), July 2023, p. 10284-10294
Wang, Yujue; Zhang, Yanjing; Li, Wenshuai; Wu, Guanru; Qi, Yuxuan; Li, Shubin; Zhu, Wenqing; Yu, Jianzhen; Yu, Xu; Zhang, Hong-Hai; Sun, Jun; Wang, Wencai; Sheng, Lifang; Yao, Xiaohong; Gao, Huiwang; Huang, Cheng; Ma, Yingge; Zhou, Yang

Article 1

Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection

Atmospheric Environment, v. 271, 15 February 2022, article number 118905
Li, Jinjian; Yu, Xu; Li, Qianfeng; Wang, Shan; Cheng, Yuk Ying; Yu, Jianzhen

Article 1

Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection

Environmental Science & Technology, v. 55, (17), September 2021, p. 11579-11589
Yu, Xu; Li, Qianfeng; Ge, Yao; Li, Yumin; Liao, Kezheng; Huang, Xiaohui Hilda; Li, Jinjian; Yu, Jianzhen

Article 4

Dramatic increase in reactive volatile organic compound (VOC) emissions from ships at berth after implementing the fuel switch policy in the Pearl River Delta Emission Control Area

Atmospheric Chemistry and Physics, v. 20, (4), February 2020, p. 1887-1900
Wu, Zhengfeng; Zhang, Yanli; He, Junjie; Chen, Hongzhan; Huang, Xueliang; Wang, Yujun; Yu, Xu; Yang, Weiqiang; Zhang, Runqi; Zhu, Ming; Li, Sheng; Fang, Hua; Zhang, Zhou; Wang, Xinming

Enhanced Wet Deposition of Water-Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In-Cloud Scavenging

Journal of Geophysical Research: Atmospheres, v. 125, (18), 31 Agust 2020, article number e2020JD032699
Yu, Xu; Li, Dejun; Zhang, Guohua; Zhou, Huaishan; Li, Sheng; Song, Wei; Zhang, Yanli; Bi, Xinhui; Yu, Jianzhen; Wang, Xinming

PM_2.5-bound unresolved complex mixtures (UCM) in the Pearl River Delta region: Abundance, atmospheric processes and sources

Atmospheric Environment, v. 226, April 2022, article number 117407
Fang, Hua; Lowther, Scott D.; Zhu, Ming; Pei, Chenglei; Li, Sheng; Fang, Zheng; Yu, Xu; Yu, Qingqing; Wang, Yujun; Zhang, Yanli; Jones, Kevin C.; Wang, Xinming

Wet and Dry Nitrogen Depositions in the Pearl River Delta, South China: Observations at Three Typical Sites With an Emphasis on Water-Soluble Organic Nitrogen

Journal of Geophysical Research: Atmospheres, v. 125, (3), February 2020, article number e2019JD030983
Yu, Xu; Pan, Yuepeng; Song, Wei; Li, Sheng; Li, Dan; Zhu, Ming; Zhou, Huaishan; Zhang, Yanli; Yu, Jianzhen; Wang, Xinming

Article 1

Organosulfur Compounds Formed from Heterogeneous Reaction between SO₂ and Particulate-Bound Unsaturated Fatty Acids in Ambient Air

Environmental Science and Technology Letters, v. 6, (6), June 2019, p. 318-322
Zhu, Ming; Jiang, Bin; Li, Sheng; Yu, Qingqing; Yu, Xu; Zhang, Yanli; Bi, Xinhui; Yu, Jianzhen; George, Christian; Yu, Zhiqianng; Wang, Xinming

Article 2

Fast Screening Compositions of PM_2.5 by ATR-FTIR: Comparison with Results From IC andOC/EC analyzers

Journal of Environmental Sciences, v. 71, September 2018, p. 76-88
Yu, Xu; Song, Wei; Yu, Qingqing; Li, Sheng; Zhu, Ming; Zhang, Yanli; Deng, Wei; Yang, Weiqiang; Huang, Zhonghui; Bi, Xinhui; Wang, Xinming

Filter-based measurement of light absorption by brown carbon in PM_2.5 in a megacity in South China

Science of the Total Environment, v. 633, August 2018, p. 1360-1369
Li, Sheng; Zhu, Ming; Yang, Weiqiang; Tang, Mingjin; Huang, Xuang; Yu, Yuegang; Fang, Hua; Yu, Xu; Yu, Qingqing; Fu, Xiaoxin; Song, Wei; Zhang, Yanli; Bi, Xinhui; Wang, Xinming

Article 1

Water soluble organic nitrogen (WSON) in ambient fine particles over a megacity in South China: Spatiotemporal variations and source apportionment

Journal of Geophysical Research: Atmospheres, v. 122, (23), December 2017, p. 13045-13060
Yu, Xu; Yu, Qingqing; Zhu, Ming; Tang, Mingjin; Li, Sheng; Yang, Weiqiang; Zhang, Yanli; Deng, Wei; Li, Guanghui; Yu, Yuegang; Huang, Zhonghui; Song, Wei; Ding, Xiang; Hu, Qihou; Li, Jun; Bi, Xinhui; Wang, Xinming

2019 1

Organosulfur Compounds Formed from Heterogeneous Reaction between SO₂ and Particulate-Bound Unsaturated Fatty Acids in Ambient Air

Environmental Science and Technology Letters, v. 6, (6), June 2019, p. 318-322
Zhu, Ming; Jiang, Bin; Li, Sheng; Yu, Qingqing; Yu, Xu; Zhang, Yanli; Bi, Xinhui; Yu, Jianzhen; George, Christian; Yu, Zhiqianng; Wang, Xinming
Article

2018 2

Fast Screening Compositions of PM_2.5 by ATR-FTIR: Comparison with Results From IC andOC/EC analyzers

Journal of Environmental Sciences, v. 71, September 2018, p. 76-88
Yu, Xu; Song, Wei; Yu, Qingqing; Li, Sheng; Zhu, Ming; Zhang, Yanli; Deng, Wei; Yang, Weiqiang; Huang, Zhonghui; Bi, Xinhui; Wang, Xinming
Article

Filter-based measurement of light absorption by brown carbon in PM_2.5 in a megacity in South China

Science of the Total Environment, v. 633, August 2018, p. 1360-1369
Li, Sheng; Zhu, Ming; Yang, Weiqiang; Tang, Mingjin; Huang, Xuang; Yu, Yuegang; Fang, Hua; Yu, Xu; Yu, Qingqing; Fu, Xiaoxin; Song, Wei; Zhang, Yanli; Bi, Xinhui; Wang, Xinming
Article

2017 1

Water soluble organic nitrogen (WSON) in ambient fine particles over a megacity in South China: Spatiotemporal variations and source apportionment

Journal of Geophysical Research: Atmospheres, v. 122, (23), December 2017, p. 13045-13060
Yu, Xu; Yu, Qingqing; Zhu, Ming; Tang, Mingjin; Li, Sheng; Yang, Weiqiang; Zhang, Yanli; Deng, Wei; Li, Guanghui; Yu, Yuegang; Huang, Zhonghui; Song, Wei; Ding, Xiang; Hu, Qihou; Li, Jun; Bi, Xinhui; Wang, Xinming
Article

No Publications

Projects

From January 2023 to December 2025

All Projects 3 Leading Projects 2 Participating Projects 1

Observation and Modeling of Organic Nitrogen Abundance and Molecular Composition in Aerosol and Rainwater in China

中國氣溶膠和降水中有機氮總量和分子組成的觀測與模擬研究 Participating

National Natural Science Foundation of China (NSFC) / Research Grants Council (RGC)
Project Team (HKUST)
YU Jianzhen (Lead)

WANG Zhe

YU Xu
2025 -
Dry deposition and source apportionment of atmospheric particulate organic nitrogen (ON): towards both water-soluble and water-insoluble ON

大氣顆粒物中水溶性和水不溶性有機氮干沉降特征與來源解析 Leading

RGC - General Research Fund
Project Team (HKUST)
YU Xu (Lead)

YU Jianzhen
2024 -
Environment and Conservation Fund Year-round observation of particulate organic and inorganic nitrates in urban Hong Kong: insights in NOx transformation pathway and the influence factors

環境及自然保育基金資助香港城市地區大氣顆粒物中有機和無機硝酸鹽全年觀測：探究NOx的轉化路徑及其影響因素 Leading

Environment and Conservation Fund / Woo Wheelock Green Fund
Project Team (HKUST)
YU Xu (Lead)

YU Jianzhen
2024 -

Research Interest

Publications

2024 2

2023 4

2022 1

2021 1

2020 4

2019 1

2018 2

2017 1

Article 2

Article 4

Article 1

Article 1

Article 4

Article 1

Article 2

Article 1

2019 1

2018 2

2017 1

Projects

From January 2023 to December 2025

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