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Impact of seasonal changes and environmental conditions on suspended and inhalable microplastics in urban air.
Chen, Yu-Cheng; Wei, Chun-Hsuan; Hsu, Wei-Ting; Proborini, Wahyu Diah; Hsiao, Ta-Chih; Liu, Zhen-Shu; Chou, Hsiu-Chuan; Soo, Jhy-Charm; Dong, Guo-Chung; Chen, Jen-Kun.
Afiliação
  • Chen YC; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, 35053, Taiwan; Department of Occupational Safety and Health, China Medical University, Taichung, 40402, Taiwan; Department of Safety, Health and Environmental Engineering, National United University, Mi
  • Wei CH; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, 35053, Taiwan.
  • Hsu WT; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, 35053, Taiwan.
  • Proborini WD; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, 35053, Taiwan.
  • Hsiao TC; Graduate Institute of Environmental Engineering, National Taiwan University, Taiwan.
  • Liu ZS; Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, Taiwan.
  • Chou HC; Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
  • Soo JC; Environmental Health Sciences Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA, USA.
  • Dong GC; Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan.
  • Chen JK; Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan.
Environ Pollut ; 362: 124994, 2024 Sep 19.
Article em En | MEDLINE | ID: mdl-39306067
ABSTRACT
Microplastics (MPs) are ubiquitous environmental pollutants extensively detected in atmospheric environments. Airborne MPs have raised concerns due to their transport and potential health risks of inhalation exposure. However, the factors influencing airborne MPs, particularly their concentrations and shapes suspended in urban air, remain unclear. We investigated MPs in total suspension particles with one-year measurements in Taipei City and identified their features using Nile Red staining combined with fluorescence microscopy and micro-Fourier transform infrared (µFTIR) spectroscopy. This study quantified the mean number concentration of total MPs as approximately 6.0 #/m³. We observed that MP abundance varied seasonally, with higher levels in the warm season than in the cold. A similar trend was noted for polymer types. Fragment-like MPs were the predominant shape, mainly found in polystyrene (PS), polyethylene (PE), and polypropylene (PP), while fibrous MPs, detected mostly as polyethylene terephthalate (PET) and polyamide (PA), were primarily observed at sizes greater than 300 µm. Both fiber and fragment-like MPs were positively associated with particle mass concentration, temperature, ultraviolet (UV) index, and wind speed, but negatively correlated with relative humidity and rainfall. Fibrous MPs were more affected by environmental factors than fragment-like MPs. Meteorological changes significantly influenced suspended MPs more than human activity within the city.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article