NDLI: Heavy Metal Contamination of Road Dust at the Downtown Area in the Metropolitan City of Ulsan, Korea

Content Provider	IEEE Xplore Digital Library
Author	Duong, T.T.T. Byeong-Kyu Lee Dong, T.T.T. Ui-ryang Jeong Ae-ri Kim Haengah Kim Lee
Copyright Year	2006
Description	Author affiliation: Dept. of Civil & Environ. Eng., Ulsan Univ. (Duong, T.T.T.; Byeong-Kyu Lee; Dong, T.T.T.; Ui-ryang Jeong; Ae-ri Kim; Haengah Kim Lee)
Abstract	Road dust often contains elevated concentrations of heavy metals and can influence on human health. Therefore, a study on the characteristics of heavy metals in road dust was carried out in the Metropolitan City of Ulsan of Korea. Road dust was obtained from a downtown area, Seongnamdong, Chung-gu, Ulsan. The road dust was collected inside the filter attached in the vacuum cleaner in March, 2006. The road dust was separated into four size-fractions by using the sieves as follows: 2000 mum, 850 mum, 180 mum and 75 mum. The heavy metals in road dust sample were extracted by aqua regia extraction method $(HNO_{3}:HCl$ = 1:3). The concentrations of heavy metal were analyzed by atomic absorption spectrometry. The mean values in the road dust with 850 2000 mum, 180 - 850 mum, 75 - 180 mum, and < 75 mum size for Cd were 0.30, 0.46, 1.04, and 2.27 mug $g^{-1}$ , respectively; for Cu were 264.65, 139.10, 235.50, and 345.10 mug $g^{-1},$ respectively; for Pb were 51.80, 57.00, 118.40, and 223.26 mug $g^{-1},$ respectively; for Zn were 258.00, 430.05, 751.55, and 1270.85 mug $g^{-1},$ respectively; for Ni were 13.20, 24.76, 36.86, and 52.15 mug $g^{-1},$ respectively. The results indicate that the road dust in the study area has elevated concentrations of Cd, Cu, Pb, Zn, and Ni and the concentrations of heavy metals increased with the decrease of particle size. Road dust sample was also analyzed for the mobility of metals by sequential extraction methods including a modified BCR procedure and Tessier procedure. The results show that Cd was mainly in the exchangeable and carbonate phases, Ni was mainly in the exchangeable phase, Pb and Zn were associated with the carbonate fraction. However, Cu may not be associated with the exchangeable and carbonate fractions. In general, the mobility of heavy metals in the road dust might be Cd>Ni>Zn=Pb>Cu.
Starting Page	213
Ending Page	215
File Size	3434597
Page Count	3
File Format	PDF
ISBN	1424404266
DOI	10.1109/IFOST.2006.312289
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-18
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filters Pollution Absorption Roads Laboratories Humans Cities and towns Chemical elements Contamination Zinc
Content Type	Text
Resource Type	Article

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