期刊
ENVIRONMENTAL POLLUTION
卷 163, 期 -, 页码 32-39出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.12.003
关键词
Baltimore; Lead; Spatial heterogeneity; Urban soil; Field-portable XRF
资金
- NSF [DEB 042376, 0808418]
- Direct For Biological Sciences
- Division Of Environmental Biology [1027188] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [0808418] Funding Source: National Science Foundation
Lead contamination of urban residential soils is a public health concern. Consequently, there is a need to delineate hotspots in the landscape to identify risk and facilitate remediation. Land use is a good predictor of some environmental pollutants. However, in the case of soil lead, research has shown that land use is not a useful proxy. We hypothesize that soil lead is related to both individual landscape features at the parcel scale and the landscape context in which parcels are embedded. We sampled soil lead on 61 residential parcels in Baltimore, Maryland using field-portable x-ray fluorescence. Thirty percent of parcels had average lead concentrations that exceeded the USEPA limit of 400 ppm and 53% had at least one reading that exceeded 400 ppm. Results indicate that soil lead is strongly associated with housing age, distance to roadways, and on a parcel scale, distance to built structures. (C) 2011 Elsevier Ltd. All rights reserved.
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