Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers

Autor(es)

Paraiba, Lourival C. ^[1] ; Queiroz, Sonia C. N. ^[1] ; de Souza, Debora R. C. ^[1] ; Saito, Maria L. ^[1]

Afiliação do(s) autor(es)

^[1] Embrapa Meio Ambiente, BR-13820000 Jaguariuna, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 22, n. 6, p. 1156-U212, 2011.
• Citações Web of Science: 7

Resumo

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)

• Processo FAPESP: 07/04427-8 - Bioconcentração de hidrocarbonetos policíclicos aromáticos (HPAs) em grãos de milho cultivados em solos com lodo de esgoto
• Beneficiário: Lourival Costa Paraíba
• Modalidade de apoio: Auxílio à Pesquisa - Regular