IngentaConnect Lead and Cadmium Contamination in Roadside Soils in Irbid City, J...

Authors: A. Massadeh¹; M. Tahat²; Q. Jaradat³; I. Al-Momani⁴

Source: Soil and Sediment Contamination (formerly Journal of Soil Contamination), Volume 13, Number 4, 2004 , pp. 347-359(13)

Publisher: Taylor and Francis Ltd

Abstract:

This study evaluates the amount and distribution of Pb and Cd in roadside soils adjacent to two main roads in Irbid, Jordan, from October 2001 to July 2002. A total of 260 samples were collected from Irbid-Howara Street and Yarmouk University Street. Lead and Cd content were measured using Graphite Furnace Atomic Absorption Spectrometry. The environmental significance of this study is discussed in terms of the influence of traffic density on Pb and Cd concentrations in roadside soils, and enrichment factors were calculated to evaluate the degree of pollution. The accuracy of the results obtained has been examined and two standard reference materials, CRM 142 R (soil) and SRM 2709 (soil), were analyzed to confirm the accuracy of the results. The precision of the measurements was assessed in terms of relative standard deviation (RSD) using five replicate analyses of samples collected from the roadside sites. RSD values for Pb and Cd were found to be less than 6%. The overall Pb concentration in roadside soil samples was 325 and 431 mgr

g g-1 for Pb and 1.142 and 1.135 mgr

g g-1 for Cd in Yarmouk University Street and Irbid-Houwa Street, respectively. Results indicated that levels of Pb and Cd were decreasing as the distance from the road increases. Enrichment factor results were 655 and 826 for Pb, and 252 and 237 for Cd in Yarmouk University Street and Irbid-Houwa Street, respectively.

Keywords: Graphite furnace atomic absorption spectrometry; lead; cadmium; roadside soils; Jordan

Document Type: Research article

DOI: 10.1080/10588330490466030

Affiliations: 1: Department of Medicinal Chemistry and Pharmacognosy Faculty of Pharmacy, Jordan University of Science and Technology Irbid Jordan 2: Mechanical Engineering Department Faculty of Engineering, Jordan University of Science and Technology Irbid Jordan 3: Chemistry Department Faculty of Science, Mutah University Alkarak Jordan 4: Chemistry Department Faculty of Science, Yarmouk University Irbid Jordan

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Lead and Cadmium Contamination in Roadside Soils in Irbid City, Jordan: A Case Study