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Trace Elements Analysis and Source Assessment of School Dust in Daegu, Korea  

Song, Hee-Bong (Public Health and Environment Institute of Daegu Metropolitan City)
Do, Hwa-Seok (Public Health and Environment Institute of Daegu Metropolitan City)
Lee, Myoung-Sook (Public Health and Environment Institute of Daegu Metropolitan City)
Shin, Dong-Chan (Public Health and Environment Institute of Daegu Metropolitan City)
Yoon, Ho-Suk (Public Health and Environment Institute of Daegu Metropolitan City)
Kwak, Jin-Hee (Public Health and Environment Institute of Daegu Metropolitan City)
Jung, Cheol-Su (Public Health and Environment Institute of Daegu Metropolitan City)
Kang, Jae-Hyung (Public Health and Environment Institute of Daegu Metropolitan City)
Publication Information
Abstract
Samples of 45 school dust were collected in Daegu in January 2007, were sieved below 100 ${\mu}m$, and 14 elements were analyzed using ICP after an acid extraction. Results obtained from the source assessment of trace elements using enrichment factor showed that dust from playground were influenced by natural sources, while dust from classroom were influenced by urban anthropogenic sources. The measured values were remarkably higher in components from natural sources than in components from urban anthropogenic sources. Dust from classroom are highly concentrated than those from playground. Concentrations of dust in urban area are similar to those of dust in rural area and there was no significant difference in concentrations between classroom with playground soil and classroom with play-ground grass. Compared with other cities in Korea, concentrations of heavy metals in Daegu city were higher in classroom and lower in playground than those of heavy metals in other cities. Dust from classroom contained lower concentrations of trace elements than those from street in Daegu. Results of pollution indices of heavy metals indicated that playground was not contaminated with heavy metals and classroom was considered to be highly contaminated. No appreciable differences in playground were found between urban and rural areas but in case of classroom pollution, heavy metal concentrations were a little bit higher in urban areas than in rural areas. The correlation analysis among trace elements indicated that components in playground were significantly correlated, while components in classroom were less correlated. Trace element components of classroom dust were not significantly affected by those of playground dust.
Keywords
School Dust; Trace Elements; Enrichment Factor; Pollution Indices;
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Times Cited By KSCI : 2  (Citation Analysis)
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