Molecular compositions and stable carbon isotopes (δ13C) of PAHs in wintertime PM2.5 in urban Xi'an, China: Implications for source distribution and atmospheric oxidation

Li, Jianjun; Wang, Xiaoqing; Dai, Wenting; Qi, Weining; Liu, Haijiao; Shen, Minxia; Liu, Yali; Guo, Xiao; Zhang, Yifan; Li, Lü; Cao, Yangyang; Li, Lijuan; Chen, Yu-Kun; Feng, Qiao

doi:10.1016/j.atmosres.2023.106890

Cited by 4 publications

(2 citation statements)

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“…Comparing PAH concentrations in air particles with other countries, urban and rural areas in Bangladesh demonstrated similar levels to Hefei (China), Conotou (Nigeria), the coastal urban region (Poland), Varanasi (India), and Shahryar (Iran) (Table 3). However, in shipbreaking areas, PAH concentrations in air particles in Bangladesh were notably higher than in other countries [52,54,81,[84][85][86][87][88][89][90][91][92][93][94]. This comparison suggests that shipbreaking areas could be among the most PAH-contaminated air particle zones in Bangladesh.…”

Section: Pahs In Air Particlesmentioning

confidence: 85%

“…Given this scenario, we recommend more research about PAHs in air particles, including shipbreaking areas and urban areas, which could be the possible hotspot of particulate-bound PAHs in Bangladesh. Therefore, we recommend subsequent research is needed to identify the molecular distribution and gas-to-particle partition of PAHs in air particles through the technique of compound-specific stable carbon isotopes [87]. The human health risks of air particles, including lung cancer risks [121], lung cell toxicity [122], lung cell alternation, and genetic instability [123], should be focused in the future on Bangladesh.…”

Section: Future Research Directions and Recommendationsmentioning

confidence: 99%

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Sources, Occurrences, and Risks of Polycyclic Aromatic Hydro-Carbons (PAHs) in Bangladesh: A Review of Current Status

Uddin,

2024

Atmosphere

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Polycyclic aromatic hydrocarbons (PAHs) pollution has emerged as a significant environmental issue in Bangladesh in the recent years, driven by both economic and population growth. This review aims to investigate the current trends in PAHs pollution research, covering sediments, water, aquatic organisms, air particles, and associated health risks in Bangladesh. A comparative analysis with PAHs research in other countries is conducted, and potential future research directions are explored. This review suggests that the research on PAHs pollution in Bangladesh is less well studied and has fewer research publications compared to other countries. Dominant sources of PAHs in Bangladesh are fossil fuel combustion, petroleum hydrocarbons, urban discharges, industrial emissions, shipbreaking, and shipping activities. The concentrations of PAHs in sediments, water, air particles, and aquatic organisms in Bangladesh were found to be higher than those in most of the other countries around the world. Therefore, coastal sediments showed higher PAHs pollution than urban areas. Health risk assessments reveal both carcinogenic and non-carcinogenic risks to residents in Bangladesh due to the consumption of aquatic organisms. According to this investigation, it can be concluded that there are considerably higher PAHs concentrations in different environmental compartments in Bangladesh, which have received less research attention compared with other countries of the world. Considering these circumstances, this review recommends that future PAHs pollution research directions should focus on aquatic ecosystems, shipbreaking areas, air particles, and direct exposure to human health risks. Therefore, this study recommends addressing the identification of PAH sources, bioaccumulation, biomagnification in the food web, and biomarker responses of benthic organisms in future PAHs pollution research.

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