biostudies-literatureAldekheel MNIA NIH HHSNational Institutes of Health123165https://www.ebi.ac.uk/biostudies/studies/S-EPMC10923010biostudies-literatureUnknown343In this study, we investigated the seasonal variations, chemical composition, sources, and oxidative potential of ambient PM2.5 (particles with a diameter of less than 2.5 μm) in Kuwait City. The sampling campaign was conducted within the premises of Kuwait Institute for Scientific Research from June 2022 to May 2023, covering different seasons throughout the year. The personal cascade impactor sampler (PCIS) operated at flow rate of 9 L/min was employed to collect weekly PM2.5 samples on PTFE and quarts filters. These collected samples were analyzed for carbonaceous species (i.e., elemental and organic carbon), metals and transition elements, inorganic ions, and DTT (dithiothreitol) redox activity. Furthermore, principal component analysis (PCA) and multi-linear regrEnvironmental pollution (Barking, Essex : 1987)Identifying urban emission sources and their contribution to the oxidative potential of fine particulate matter (PM2.5) in Kuwait.PMC109230105P01AG055367-05P01 AG055367Aldekheel MAl-Hemoud AAlkudari FTohidi RVerma VSioutas CSubramanian PSGfalseIdentifying urban emission sources and their contribution to the oxidative potential of fine particulate matter (PM2.5) in Kuwait.In this study, we investigated the seasonal variations, chemical composition, sources, and oxidative potential of ambient PM2.5 (particles with a diameter of less than 2.5 μm) in Kuwait City. The sampling campaign was conducted within the premises of Kuwait Institute for Scientific Research from June 2022 to May 2023, covering different seasons throughout the year. The personal cascade impactor sampler (PCIS) operated at flow rate of 9 L/min was employed to collect weekly PM2.5 samples on PTFE and quarts filters. These collected samples were analyzed for carbonaceous species (i.e., elemental and organic carbon), metals and transition elements, inorganic ions, and DTT (dithiothreitol) redox activity. Furthermore, principal component analysis (PCA) and multi-linear regr2024-01-01T00:00:00Z2024 Feb2025-04-26T12:31:03.393Z2025-04-06T13:59:05.924ZS-EPMC109230103810371610.1016/j.envpol.2023.123165