Roadside Rhododendron pulchrum leaves as bioindicators of heavy metal pollution in traffic areas of Okayama, Japan
- 18 March 2008
- journal article
- Published by Springer Science and Business Media LLC in Environmental Monitoring and Assessment
- Vol. 149 (1-4), 133-141
- https://doi.org/10.1007/s10661-008-0188-7
Abstract
The leaves of roadside Rhododendron pulchrum Sweet were examined as a bioindicator of traffic-related heavy metal pollution in Okayama. Total contents of heavy metals in roadside soil and the R. pulchrum leaves were determined. Results of correlation analyses showed significant correlations among Pb, Ni, and Zn contents of roadside soil and leaf samples. These results suggest that R. pulchrum is a useful bioindicator of heavy metal pollution in traffic areas. To identify traffic-related heavy metal pollution sources, traffic-related materials such as tires, asphalt pavement, and road paint were collected and analyzed. The results of analyses of our data show that Zn is emitted mainly from the abrasion of tires; Cr is emitted mainly from wear of the asphalt pavement. Furthermore, the respective lead isotope ratios in R. pulchrum leaves, soil, roadside dust, and traffic-related materials were measured using inductively coupled plasma mass spectrometry. The isotopic compositions of lead in R. pulchrum leaves were 207Pb/206Pb = 0.861–0.871 and 208Pb/206Pb = 2.093–2.127, which agrees well with ratios in automobile wheel balance weights, suggesting that lead-containing products associated with automobiles, such as wheel balance weights, contribute to traffic-related lead pollution.This publication has 15 references indexed in Scilit:
- Strategies of heavy metal uptake by plants growing under industrial emissionsEnvironment International, 2007
- Measurement of chemical elements in rain from Rancho Viejo, a rural wooded area in the State of Mexico, MexicoAtmospheric Environment, 2006
- Urban soil pollution in Damascus, Syria: concentrations and patterns of heavy metals in the soils of the Damascus GhoutaGeoderma, 2005
- Heavy-metal content of roadside gutter sediments in Ibadan, NigeriaEnvironment International, 1997
- Investigation of Lead and Cadmium Levels in Roadside Rhododendron Leaves in Bergen, Norway Utilizing Multivariate AnalysisMicrochemical Journal, 1997
- Characterization of sources of lead in the urban air of Asia using ratios of stable lead isotopesEnvironmental Science & Technology, 1993
- Soil Pollution by Metals from Mining and Smelting ActivitiesPublished by Springer Science and Business Media LLC ,1988
- The deposition of lead and zinc from traffic pollution on two roadside shrubsEnvironmental Pollution Series B, Chemical and Physical, 1980
- Ore lead isotope ratios in a continuously changing earthEarth and Planetary Science Letters, 1975
- The Distribution of Zinc-65 inAgrostis tenuissibth. andA. stoloniferaL. Tissues4Journal of Experimental Botany, 1969