Sources and Health Risks of Heavy Metals in PM2.5 in a Campus in a Typical Suburb Area of Taiyuan, North China
| Autor: | Changyuan Wan, Kankan Liu, Qingmin Shang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Population Air pollution heavy metals PM2.5 health risk campus Coal combustion products lcsh:QC851-999 010501 environmental sciences Environmental Science (miscellaneous) Combustion medicine.disease_cause complex mixtures 01 natural sciences Spring (hydrology) medicine education Air quality index 0105 earth and related environmental sciences Inhalation exposure education.field_of_study geography geography.geographical_feature_category Heavy metals Environmental chemistry Environmental science lcsh:Meteorology. Climatology |
| Zdroj: | Atmosphere; Volume 9; Issue 2; Pages: 46 Atmosphere, Vol 9, Iss 2, p 46 (2018) |
| ISSN: | 2073-4433 |
| Popis: | To evaluate air pollution and the public health burden of heavy metals in PM2.5 in a campus with a population of approximately 40,000 in a typical suburb area of Taiyuan, North China, PM2.5 measurements were conducted during the spring and winter of 2016. The average concentrations of PM2.5 in spring and winter were 97.3 ± 35.2 µg m−3 and 205.9 ± 91.3 µg m−3, respectively. The order of concentration of heavy metals in PM2.5 was as follows: Zn > Pb > Mn > Cu > Cr > Ni > Cd > As, in both spring and winter. The concentrations of Cd and Pb in winter and the concentrations of Cr in both spring and winter in this study were significantly higher than the corresponding air quality standard values. Road/soil dust, industrial emissions/coal combustion, and vehicle emissions/oil combustion and coal combustion/industrial emissions, road/soil dust, and vehicle emissions/oil combustion were identified by principal component analysis to be the major sources of heavy metals for spring and winter, respectively. The carcinogenic risks posed by Cr via the three exposure pathways (except for inhalation exposure to children) and by Pb via ingestion exposure exceeded the acceptable level for both children and adults. The non-carcinogenic risks posed by Mn via inhalation for both children and adults, and by Cr and Pb for children via ingestion exceeded the acceptable level. |
| Databáze: | OpenAIRE |
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