Bioaccessibility, sources and health risk assessment of trace metals in urban park dust in Nanjing, Southeast China
| Autor: | Shi-Wei Li, Yixuan Sun, Cheng Wang, Xinyi Cui, Huiming Li, Xin Qian, Jinhua Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Pollution China Parks Recreational Health Toxicology and Mutagenesis media_common.quotation_subject 0211 other engineering and technologies chemistry.chemical_element Environmental pollution 02 engineering and technology 010501 environmental sciences Risk Assessment 01 natural sciences Arsenic Metals Heavy Humans Dust exposure Cities Health risk Child 0105 earth and related environmental sciences media_common 021110 strategic defence & security studies Urban park Health risk assessment Public Health Environmental and Occupational Health Dust General Medicine Contamination Trace Elements chemistry Environmental chemistry Environmental science Environmental Pollution |
| Zdroj: | Ecotoxicology and Environmental Safety. 128:161-170 |
| ISSN: | 0147-6513 |
| Popis: | Arsenic, Cd, Co, Cr, Cu, Mn, Ni, Pb, V, and Zn total concentrations and bioaccessibilities in 15 urban park dust samples were determined. The oral bioaccessibility measured by the Simple Bioaccessibility Extraction Test (SBET) decreased in the order of Pb>Cd>Zn>Mn>Cu>Co>V>Ni>As>Cr. The Tomlinson pollution load index (PLI) and geoaccumulation index (I(geo)) were calculated to evaluate the pollution extent to which the samples were contaminated. Sources were identified using principal component analysis and Pb isotope compositions. Most elements except Co and V were considered to mainly originate from anthropogenic sources. Non-carcinogenic and carcinogenic risks to humans through urban park dust exposure were assessed using the oral bioaccessibilities of the elements. Ingestion was the main pathway for non-carcinogenic risk. The hazard quotients were below the safe level (=1) for all elements, however, Pb (0.154) and As (0.184) posed potential higher risks to children than adults. The carcinogenic effects occurring were below the acceptable level (10(-4)) for As and |
| Databáze: | OpenAIRE |
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