Journal
SOIL & SEDIMENT CONTAMINATION
Volume 13, Issue 3, Pages 313-327Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10588330490445349
Keywords
soil and sediment contamination; PAHs; metals; accelerated solvent extraction; GC/MS analysis
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Soil and sediment samples from New Orleans have been collected and analyzed for contamination by 16 polycyclic aromatic hydrocarbons (PAHs) and 8 trace metals. Total PAH contents were found to vary from 40 mug/kg to 40,000 mug/kg, and concentrations of total metals varied in the range of 80 mg/kg and 7600 mg/kg. Source analysis of PAHs using diagnostic concentration ratios such as phenanthrene/anthracene and fluoranthene/pyrene indicated that PAHs found at elevated concentrations in New Orleans soils and sediments were of pyrolytic origins. Spearman rank bivariate correlation analysis revealed significant correlations between soil PAHs and metals (r = 0.80, p < 0.0001) and between sediment PAHs and metals (r = 0.62, p < 0.05), suggesting common pollution sources for the two groups of environmental pollutants. Strong correlations were also found between Pb and Zn in soils (r = 0.93, p < 0.0001) as well as in sediments (r 0.65, p < 0.05).
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