Archives of Environmental Contamination and Toxicology

, Volume 64, Issue 1, pp 32–51

Contaminants in Stream Sediments From Seven United States Metropolitan Areas: Part I: Distribution in Relation to Urbanization

Authors

    • California Water Science Center, United States Geological Survey
  • Patrick W. Moran
    • Washington Water Science Center, United States Geological Survey
  • Robert J. Gilliom
    • California Water Science Center, United States Geological Survey
  • Daniel L. Calhoun
    • Georgia Water Science Center, United States Geological Survey
  • Christopher G. Ingersoll
    • Columbia Environmental Research Center, United States Geological Survey
  • Nile E. Kemble
    • Columbia Environmental Research Center, United States Geological Survey
  • Kathryn M. Kuivila
    • California Water Science Center, United States Geological Survey
  • Patrick J. Phillips
    • New York Water Science Center, United States Geological Survey
Article

DOI: 10.1007/s00244-012-9813-0

Cite this article as:
Nowell, L.H., Moran, P.W., Gilliom, R.J. et al. Arch Environ Contam Toxicol (2013) 64: 32. doi:10.1007/s00244-012-9813-0

Abstract

Organic contaminants and trace elements were measured in bed sediments collected from streams in seven metropolitan study areas across the United States to assess concentrations in relation to urbanization. Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, organochlorine pesticides, the pyrethroid insecticide bifenthrin, and several trace elements were significantly related to urbanization across study areas. Most contaminants (except bifenthrin, chromium, nickel) were significantly related to the total organic carbon (TOC) content of the sediments. Regression models explained 45–80 % of the variability in individual contaminant concentrations using degree of urbanization, sediment-TOC, and study-area indicator variables (which represent the combined influence of unknown factors, such as chemical use or release, that are not captured by available explanatory variables). The significance of one or more study-area indicator variables in all models indicates marked differences in contaminant levels among some study areas, even after accounting for the nationally modeled effects of urbanization and sediment-TOC. Mean probable effect concentration quotients (PECQs) were significantly related to urbanization. Trace elements were the major contributors to mean PECQs at undeveloped sites, whereas organic contaminants, especially bifenthrin, were the major contributors at highly urban sites. Pyrethroids, where detected, accounted for the largest share of the mean PECQ. Part 2 of this series (Kemble et al. 2012) evaluates sediment toxicity to amphipods and midge in relation to sediment chemistry.

Supplementary material

244_2012_9813_MOESM1_ESM.pdf (451 kb)
Supporting information details on the study areas and geographic data sources; methods for chemical analysis, modeling, and principal components analysis; and additional tables and figures. (PDF 452 kb).

Copyright information

© Springer Science+Business Media New York (outside the USA) 2012