Determination of Pb and Cd in road dusts over the period in which Pb was removed from petrol in the UK
- 1 July 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Environmental Monitoring
- Vol. 4 (4), 567-572
- https://doi.org/10.1039/b203905m
Abstract
It is commonly agreed that automobile exhaust has been the most important source of Pb pollution in urban areas, and that Cd may come from wear and tear of tyres. This study evaluates the fall in Pb concentrations in road dusts in Manchester as a consequence of the removal of Pb from petrol in January 2000. In the work presented here a slurry graphite furnace atomic absorption methodology for the determination of Pb and Cd in road dusts has been developed and is compared with an acid digestion method in terms of efficiency. The reproducibility and accuracy of the results obtained by acid digestion and the slurry method have been studied and a certified reference material CRM 038 was analysed to confirm the reliability of the proposed methods. Different factors were evaluated throughout this work including: (i) the effect of traffic density on Pb and Cd levels in road dust samples collected weekly during the period of May 1999 until September 2000; (ii) comparison between the Pb and Cd levels in a busy road and a residential street; (iii) the effect of distance from the source on Pb and Cd levels; The results of these experiments show a reduction in Pb levels over the sampling period. The relationship between road dust particle size and Pb and Cd concentration was also investigated in the 4–250 µm size range using the slurry method, showing that there is a relationship between metal concentration and particle size; the highest concentrations being for the smallest particle size.Keywords
This publication has 27 references indexed in Scilit:
- Searching for heavy metals grouping roadside soils as a function of motorized traffic influenceTalanta, 1998
- Fractionation and Biotoxicity of Heavy Metals in Urban Dusts Collected from Hong Kong and LondonEnvironmental Geochemistry and Health, 1998
- Heavy Metal Pollution in Children Playgrounds in Hong Kong and Its Health ImplicationsEnvironmental Technology, 1997
- Removal of lead and cadmium from aqueous waste streams using granular activated carbon (GAC) columnsEnvironmental Progress, 1994
- The speciation pattern of lead in street dusts and soils in the vicinity of two London schoolsEnvironment International, 1992
- Trace elements in street and house dusts: sources and speciationScience of The Total Environment, 1991
- Application of a poly(dithiocarbamate) resin with macroreticular support to the determination of trace amounts of cadmium and lead in non-saline watersThe Analyst, 1991
- The relationship between blood pressure and environmental exposure to lead and cadmium in Belgium.Environmental Health Perspectives, 1988
- Cadmium in human populationCellular and Molecular Life Sciences, 1984
- Deficits in Psychologic and Classroom Performance of Children with Elevated Dentine Lead LevelsThe New England Journal of Medicine, 1979