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Application of thermal desorption for measuring PAHs on PM2.5.
Hsu, Yuan Cheng; Hsu, Yen Chen; Chang, Moo Been.
Afiliación
  • Hsu YC; Environmental Analysis Laboratory, Environmental Protection Administration, Taiwan, Republic of China.
  • Hsu YC; Graduate Institute of Environmental Engineering, National Central University, No. 300, Zhongda Road, Zhongli District, Taoyuan City, 32001, Taiwan.
  • Chang MB; Graduate Institute of Environmental Engineering, National Central University, No. 300, Zhongda Road, Zhongli District, Taoyuan City, 32001, Taiwan.
Environ Sci Pollut Res Int ; 28(48): 69210-69220, 2021 Dec.
Article en En | MEDLINE | ID: mdl-34296414
PM2.5 and polycyclic aromatic hydrocarbons (PAHs) emitted from various sources may cause respiratory disease and lung cancer. Additionally, PAHs deposited on PM2.5 would aggravate the hazard to human health once inhaled. Therefore, it is essential to investigate the PAHs adsorbed on PM2.5 in ambient air. However, analysis of PAHs on PM2.5 is limited so far due to high detection limit of the analytical method and complex pretreatment procedures of the sample. In this study, thermal desorption (TD) is combined with GC-HRMS for direct analysis of PAHs on PM2.5 collected by the filter without pretreatment. The results indicate that distribution of PAHs on the filter is uniform and each filter section is representative for direct analysis of PAHs on PM2.5. The optimal thermal desorption temperature and purge time of analysis are found at 320°C and 60 s, respectively. Furthermore, the PAHs on PM2.5 of ambient air in Taiwan including traffic area, industrial area, suburban area, and background site are investigated. The results indicate that the concentrations of PAHs on PM2.5 in ambient air of Northern, Central, and Eastern Taiwan are in the range of 0.13-6.63 ng/m3, with an average concentration of 2.23 ng/m3. The PAH concentration measured in winter is significantly higher than that in summer, and the concentration of PAHs on PM2.5 ranges from 0.071 to 0.280 ng/µg while the average concentration is 0.133 ng/µg. The technology optimized in this study can be applied for rapid and accurate measurement of PAHs present on fine particles.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Contaminantes Atmosféricos Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Contaminantes Atmosféricos Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania