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Kim H, Park EH. Effects of chemical composition of ambient PM 2.5 measured in Seoul on potential health risks and generation of reactive oxygen species. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 352:124139. [PMID: 38734055 DOI: 10.1016/j.envpol.2024.124139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
This study assesses the health effects associated with the chemical species of ambient particulate matter (PM) with an aerodynamic diameter ≤2.5 μm (PM2.5) in Seoul, focusing on identifying key chemical constituents and their sources. We employed two approaches to estimate health risks: (1) evaluating carcinogenic and noncarcinogenic risks using IRIS (Integrated Risk Information System) data from the US EPA (Environmental Protection Agency), and (2) quantifying the generation of hydroxyl radicals (·OH) following exposure to PM2.5 in surrogate lung fluid (SLF). Our results show a significant impact on human health from certain elements (Cr, Ni, As, and Cd) and polycyclic aromatic hydrocarbons (PAHs) (DaeP, DahA, and BaP for carcinogenic risks; BaP and BeP for noncarcinogenic risks). Notably, Cr and BaP, which are influential in both risk assessment and ·OH generation, highlight their significant roles in human health impacts. However, other components (e.g., CPP, BaP, BghiP, BaA, CHR, PYR, FLT, Ca, Mg, and Cu), though contributors to ·OH generation, were not included in the EPA's health risk assessment, suggesting a need for a broader PM2.5 compositional analysis to more accurately determine exposure concentrations and assess inhalation risks. These components predominantly originate from anthropogenic sources, such as combustion, vehicles, and industrial activities, underscoring the significant health implications of the pollutants emitted from these sources. The study concluded that focusing solely on the mass reduction of PM2.5 may not suffice; a dual approach that reduces both mass concentration and chemical-specific health risks is imperative for effective public health protection.
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Affiliation(s)
- Hwajin Kim
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Institute of Health and Environment, Seoul National University, 1 Gwanak, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
| | - Eun Ha Park
- Institute of Health and Environment, Seoul National University, 1 Gwanak, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Now at Research Institute of Industrial Science and Technology, 67 Cheongam-ro, Namgu, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea
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Vallabani NVS, Gruzieva O, Elihn K, Juárez-Facio AT, Steimer SS, Kuhn J, Silvergren S, Portugal J, Piña B, Olofsson U, Johansson C, Karlsson HL. Toxicity and health effects of ultrafine particles: Towards an understanding of the relative impacts of different transport modes. ENVIRONMENTAL RESEARCH 2023; 231:116186. [PMID: 37224945 DOI: 10.1016/j.envres.2023.116186] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 05/26/2023]
Abstract
Exposure to particulate matter (PM) has been associated with a wide range of adverse health effects, but it is still unclear how particles from various transport modes differ in terms of toxicity and associations with different human health outcomes. This literature review aims to summarize toxicological and epidemiological studies of the effect of ultrafine particles (UFPs), also called nanoparticles (NPs, <100 nm), from different transport modes with a focus on vehicle exhaust (particularly comparing diesel and biodiesel) and non-exhaust as well as particles from shipping (harbor), aviation (airport) and rail (mainly subway/underground). The review includes both particles collected in laboratory tests and the field (intense traffic environments or collected close to harbor, airport, and in subway). In addition, epidemiological studies on UFPs are reviewed with special attention to studies aimed at distinguishing the effects of different transport modes. Results from toxicological studies indicate that both fossil and biodiesel NPs show toxic effects. Several in vivo studies show that inhalation of NPs collected in traffic environments not only impacts the lung, but also triggers cardiovascular effects as well as negative impacts on the brain, although few studies compared NPs from different sources. Few studies were found on aviation (airport) NPs, but the available results suggest similar toxic effects as traffic-related particles. There is still little data related to the toxic effects linked to several sources (shipping, road and tire wear, subway NPs), but in vitro results highlighted the role of metals in the toxicity of subway and brake wear particles. Finally, the epidemiological studies emphasized the current limited knowledge of the health impacts of source-specific UFPs related to different transport modes. This review discusses the necessity of future research for a better understanding of the relative potencies of NPs from different transport modes and their use in health risk assessment.
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Affiliation(s)
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, 171 77, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Karine Elihn
- Department of Environmental Science, Stockholm University, 11418, Stockholm, Sweden
| | | | - Sarah S Steimer
- Department of Environmental Science, Stockholm University, 11418, Stockholm, Sweden
| | - Jana Kuhn
- Institute of Environmental Medicine, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Sanna Silvergren
- Environment and Health Administration, 104 20, Stockholm, Sweden
| | - José Portugal
- Institute of Environmental Assessment and Water Research, CSIC, 08034, Barcelona, Spain
| | - Benjamin Piña
- Institute of Environmental Assessment and Water Research, CSIC, 08034, Barcelona, Spain
| | - Ulf Olofsson
- Department of Machine Design, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Christer Johansson
- Department of Environmental Science, Stockholm University, 11418, Stockholm, Sweden; Environment and Health Administration, 104 20, Stockholm, Sweden
| | - Hanna L Karlsson
- Institute of Environmental Medicine, Karolinska Institutet, 171 77, Stockholm, Sweden.
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