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Widespread Pb contamination in urban backyard soils for >100 years identified in soil cores constrained by 210Pb and 137Cs by Franziska C. Landes; Margaret Calcio; Jennifer M. Sobolewski; Kelcey Wallens-Logan; Anna Ledeczi; Yael Kiro; Louise Bolge; James Ross; Steven N. Chillrud; Brian J. Mailloux; Alexander van Geen is a Environmental Science article available to read on EtoBox.
What is Widespread Pb contamination in urban backyard soils for >100 years identified in soil cores constrained by 210Pb and 137Cs about?
Contaminated soil in urban residential areas is often overlooked as a source of childhood exposure to toxic levels of lead (Pb). We document mean Pb concentrations of 1200 ± 1000 mg/kg, three times the now outdated EPA soil hazard standard of 400 mg/kg, for 370 surface soils collected from 76 homes in the boroughs of Brooklyn and Manhattan of New York City. The mean Pb content of 250 ± 290 mg/kg Pb for 571 surface soils collected from tree pits and public parks was much lower. A subset of 22 surface samples analyzed by EPA Method 1340 extracted 86 ± 21 % (±1SD) of total soil Pb, indicating that it the Pb was highly bioavailable. To investigate the origin of backyard contamination, 49 cores were collected to an average depth of 30 cm from a subset of 27 homes. Twelve soil cores were analyzed for 210Pb and 137Cs to constrain processes that impact contaminant distribution and inventories (particle focusing, soil accumulation, loss, and mixing). Concentrations of Pb declined with depth in 60 % of the cores but usually did not reach background. Mean uncorrected Pb inventories of 340 ± 210 g/m2 Pb (mean ± 1SD, n = 12) were more than five times higher than the radionuclide corrected inven
Who reads Widespread Pb contamination in urban backyard soils for >100 years identified in soil cores constrained by 210Pb and 137Cs?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Franziska C. Landes; Margaret Calcio; Jennifer M. Sobolewski; Kelcey Wallens-Logan; Anna Ledeczi; Yael Kiro; Louise Bolge; James Ross; Steven N. Chillrud; Brian J. Mailloux; Alexander van Geen
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)