NDLI: Comparison of three sequential extraction procedures for partitioning of heavy metals in car park dusts

Content Provider	Royal Society of Chemistry (RSC)
Author	Kartal, Şenol Birol, Gökhan Tokalıoğlu, Şerife
Copyright Year	2003
Abstract	The aim of this study was to elucidate the amount of metal released at each step by using different extractants in three sequential extraction schemes for the partitioning of metal contents of car park deposited dust samples. For this purpose, three different sequential extraction procedures (SEP) were employed for the metal fractionation in car park dust samples collected from the campus of Erciyes University, Kayseri, Turkey. While two of the sequential extraction procedures contain five steps the other, namely the BCR sequential extraction scheme, has three steps. The first two methods fractionate metals to be exchangeable, bound to carbonates, bound to Mn oxides, bound to Fe oxides and bound to organic matter, and the BCR protocol fractionates the metals as acid soluble and exchangeable, reducible, and oxidisable. Determination of the metals Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn was performed by flame atomic absorption spectrometry (FAAS). The results obtained by the three methods were compared and showed that the amount of metal released at each step of the leaching procedure depended both on the type of reagents used and the sequence in which they were applied. The most mobile elements were Cd, Pb and Zn which are metals potentially toxic to the environment and are also known to originate from traffic. The calculated enrichment factors for Cd and Pb were substantially high (73.5–187 and 18.4–27.5, respectively) and somewhat lower for Zn (5.1–6.8). These results confirm that they are important metal pollutants for car parks. Detection limits and recoveries were found in the range of 0.01–1.39 µg ml−1and 68–126%, respectively, for the metals studied and the three sequential extraction procedures.
Starting Page	468
Ending Page	476
Page Count	9
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	5
Issue Number	3
Journal	Journal of Environmental Monitoring
DOI	10.1039/b300047h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Erciyes University Cu Kayseri Turkey Acid Lead Absorption spectroscopy
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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