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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Risk Simulation of Soil Contamination by Polycyclic Aromatic Hydrocarbons from Sewage Sludge used as Fertilizers

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Paraiba, Lourival C. [1] ; Queiroz, Sonia C. N. [1] ; de Souza, Debora R. C. [1] ; Saito, Maria L. [1]
Total Authors: 4
[1] Embrapa Meio Ambiente, BR-13820000 Jaguariuna, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 22, n. 6, p. 1156-U212, 2011.
Web of Science Citations: 7

This work investigated the presence of PAH in sewage sludge and in soil with sewage sludge applied as agricultural fertilizer and simulated a long-term risk of soil contamination by PAH. The samples were extracted using dichloromethane and then with n-hexane in ultrasonic bath. The clean-up of the extract was done on a column containing alumina. The residual PAH were obtained using a gas chromatograph coupled to a mass spectrometer (ion trap GC-MS/MS). The results evidenced that PAH concentration levels found in sewage sludge might raise potential contamination risks to the soil. Simulations of the concentrations of PAHs in soil, by mathematical modeling, allowed to indicate a priority order for monitoring soil quality in terms of these contaminants: phenanthrene > chrysene > benzo(k)fluoranthene > benzo(a)pyrene > pyrene > benzo(b)fluoranthene > benzo(g,h,i)perylene > indeno(1,2,3-c,d)pyrene > fluoranthene > benzo(a)anthracene > dibenzo(a, h) anthracene > fluorene > anthracene > naphthalene > acenaphthene > acenaphthylene. (AU)

FAPESP's process: 07/04427-8 - Bioconcentration of polycyclic aromatic hydrocarbons (PAH) in corn grains cultivated on the sewage sludge-amended soil
Grantee:Lourival Costa Paraíba
Support type: Regular Research Grants