Road Dust Lead (Pb) in Two Neighborhoods of Urban Atlanta, (GA, USA)
Tóm tắt
Road dust continues to be a major potential reservoir of Pb in the urban environment, and an important potential component of child Pb exposure. This study presents ICP-AES analyses of metals in 72 samples of road dust ( < 250 µm) collected in the urban core of Atlanta, Georgia. In the Downtown area, median Pb concentrations are ~63 mg/kg Pb, with high values of 278 mg/kg. For comparison, median Pb values in a nearby residential neighborhood (also in the urban core) were ~93 mg/kg, with a high of 972 mg/kg. Geospatial variability is high, with significant variation observed over tens to hundreds of meters. Spearman Rank Correlation tests suggest that Pb and other metals (Cu, Ni, V, Zn) are associated with iron and manganese oxide phases in the residential area, as reported in other cities. However, Pb in the Downtown area is not correlated with the others, suggesting a difference in source or transport history. Given these complexities and the expected differences between road dust and soil Pb, future efforts to assess exposure risk should therefore be based on spatially distributed sampling at very high spatial resolution.
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Tài liệu tham khảo
Jones, 2009, Trends in blood lead levels and blood testing among US children aged 1 to 5 years, 1988-2004, Pediatrics, 123, 376, 10.1542/peds.2007-3608
Available online:http://www.cdc.gov/nceh/lead/data/national.htm.
Advisory Committee on Childhood Lead Poisoning Prevention, of the Centers for Disease Control and Prevention (ACCLPP) (2012). Low Level Lead Exposure Harms Children: A Renewed Call for Primary Prevention; Report to the CDCP.
Needleman, 1990, The long-term effects of exposure to low doses of lead in childhood. An 11-year follow up report, N. Engl. J. Med., 322, 83, 10.1056/NEJM199001113220203
Binns, 2007, Interpreting and managing blood lead levels of less than 10 microg/dL in children and reducing childhood exposure to lead: Recommendations of the Centers for Disease Control and Prevention Advisory Committee on Childhood Lead Poisoning Prevention, Pediatrics, 120, e1285, 10.1542/peds.2005-1770
Bellinger, 2008, Lead neurotoxicity and socioeconomic status: Conceptual and analytical issues, Neurotoxicology, 29, 828, 10.1016/j.neuro.2008.04.005
Gump, 2008, Low-level prenatal and postnatal blood lead (Pb) exposure and adrenocortical responses to acute stress in children, Environ. Health Perspect., 116, 249, 10.1289/ehp.10391
Nigg, 2008, Low blood lead levels associated with clinically diagnosed attention-deficit/hyperactivity disorder and mediated by weak cognitive control, Biol. Psychiatry, 63, 325, 10.1016/j.biopsych.2007.07.013
(2009). Lead exposure in children: Prevention, detection, and management: Statement of policy reaffirmation. Pediatrics, 123, 1421–1422.
Dixon, 2009, Exposure of U.S. children to residential dust lead, 1999-2004: II. The contribution of lead-contaminated dust to children’s blood lead levels, Environ. Health Perspect., 117, 468, 10.1289/ehp.11918
Mielke, 2011, Estimation of Leaded (Pb) gasoline’s continuing material and health impacts on 90 urbanized areas, Environ. Int., 37, 248, 10.1016/j.envint.2010.08.006
Koleske, J.V. (1995). Paint and Coating Testing Manual, ASTM. [14th].
Hall, 2003, Determination of Ti, Zn, and Pb in lead-based house paints by EDXRF, J. Anal. Atom. Spectr., 18, 775, 10.1039/b300597f
Chaulya, 2005, Air quality status of an open pit mining area in India, Environ. Monit. Assess., 105, 369, 10.1007/s10661-005-4345-y
Filippelli, 2005, Urban lead poisoning and medical geology: An unfinished story, Geolog. Soc. Am. Today, 15, 4
Laidlaw, 2012, Re-suspension of lead contaminated urban soil as a dominant source of atmospheric lead in Birmingham, Chicago, Detroit and Pittsburgh, USA, Atmos. Environ., 49, 302, 10.1016/j.atmosenv.2011.11.030
Brown, 2008, Soil lead (Pb) in residential transects through Lubbock, Texas: A preliminary assessment, Environ. Geochem. Health, 30, 541, 10.1007/s10653-008-9180-y
Cicchella, 2008, Heavy metal pollution and Pb isotopes in urban soils of Napoli, Italy, Geochem. Explor. Environ. Anal., 8, 103, 10.1144/1467-7873/07-148
Diawara, 2006, Arsenic, cadmium, lead, and mercury in surface soils in Pueblo, Colorado: Implications for population health risk, Environ. Geochem. Health, 28, 297, 10.1007/s10653-005-9000-6
Dunlap, 2008, The persistence of lead from past gasoline emissions and mining drainage in a large riparian system: Evidence from lead isotopes in the Sacramento River, California, USA, Geochim. Cosmochim. Acta, 72, 5935, 10.1016/j.gca.2008.10.006
Laidlaw, 2008, Resuspension of urban soils as a persistent source of lead poisoning in children: A review and new directions, Appl. Geochem., 23, 2021, 10.1016/j.apgeochem.2008.05.009
Li, 2001, Heavy metal contamination urban soils and street dusts in Hong Kong, Appl. Geochem., 16, 1361, 10.1016/S0883-2927(01)00045-2
Sezgin, 2004, Determination of heavy metal concentrations in street dusts in Instanbul E-5 highway, Environ. Int., 29, 979, 10.1016/S0160-4120(03)00075-8
Wei, 2010, A review of heavy metal contaminations in urban soils, urban road dusts and agricultural soils from China, Microchem. J., 94, 99, 10.1016/j.microc.2009.09.014
Kalenuik, 2011, Pb in urban road dust of Atlanta, Georgia: Distribution and Geostatistical analyses, Geolog. Soc. Am. Abs. Prog., 43, 582
Solt, 2010, Multivariate analysis of lead in urban soil in Sacramento, CA, Geol. Soc. Am. Abs. Prog., 42, 615
McKenzie, 2009, Metals associated with stormwater-relevant brake and tire samples, Sci. Total Environ., 407, 5855, 10.1016/j.scitotenv.2009.07.018
Wang, 1998, Fractionation and biotoxicity of heavy metals in urban dusts collected in Hong Kong and London, Env. Geochem. Health, 20, 185, 10.1023/A:1006530300522
Lu, 2003, Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China, Geoderma, 115, 101, 10.1016/S0016-7061(03)00079-X
Root, 2000, Lead loading of urban streets by motor vehicle wheel weights, Environ. Health Perspect., 108, 937, 10.1289/ehp.00108937
Krivoruchko, K. (2011). Spatial Statisical Data Analysis for GIS Users, ESRI Press.