出版社：Chinese Association for Aerosol Research in Taiwan
摘要：Seasonal variation and sources of elements bound to urban aerosol were studied. Fine (PM2.5)and submicron (PM1) aerosol was collected at 2-week campaigns during four seasons in 2018.The total concentration of 21 elements accounted on average for 3.5% of the total PM2.5 massconcentration and 2.0% of the total PM1 mass concentration. Seasonal differences in the elementconcentrations in PM1 and PM2.5 were found. Most elements in both aerosol size fractions had ahigher concentration in winter or autumn than in summer or spring. Enrichment factor analysisshowed extremely highly enriched Cd, Sb and Se in both fractions. Positive matrix factorization (PMF)analysis revealed 3 sources (residential heating, resuspension and anthropogenic background) forPM1 and 3 sources (residential heating, resuspension and brake abrasion) for PM2.5 aerosol inBrno. In addition, health risk assessment of possibly toxic elements was calculated.
关键词：Particulate matter;Seasonal variation;Sources of elements;ICP-MS;Elements toxicity
