Trace metals and PAHs in topsoils of the University campus in the megacity of São Paulo, Brazil

Autor(es)

Bourotte, Christine L. M. ^[1] ; Sugauara, Lucy E. ^[2] ; De Marchi, Mary R. R. ^[2] ; Souto-Oliveira, Carlos E. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Geociancias, Rua Lago 562, BR-05508080 Sao Paulo, SP - Brazil

^[2] Univ Estadual Paulista Julio de Mesquisa Filho, UNESP, Grp Estudo Saude Ambiental & Contaminantes Organ, Dept Quim Analit, Inst Quim, Campus Araraquara, Rua Prof Francisco Degni 55, BR-14800970 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Anais da Academia Brasileira de Ciências; v. 91, n. 3 2019.
• Citações Web of Science: 1

Resumo

Abstract: The aim of this study is to discuss the concentration distribution, composition and possible sources of trace metals and 13 PAHs in topsoils of the University campus, in the city of São Paulo, the largest city of South America. Mineralogy and granulometry of topsoils (0-10 cm) samples, were determined and As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, Sb, V, Zn, Hg, Pt, Pd and PAHs concentrations were quantified in the bulk fraction. The average clay content of soils was 221±61.8 g kg-1 and total carbon was low (mean of 25 g kg-1). Concentrations of metals were generally lower than the reference value established by the São Paulo State Environmental Agency and other studies in the São Paulo urban area, except for Cd, Ni, Pb, Cr and Zn. The mean concentration of the sum of 13 PAHs was 0.33 mg kg-1 and fluorene, indeno(1,2,3-cd)pyrene, anthracene, pyrene and benzo(ghi)perylene were the most abundant compounds. PAHs and trace metals variability were constrained in PMF analysis and showed an association with exhaust and non-exhaust vehicular emissions. The results also pointed out a spatial pattern in the campus area related to traffic conditions and intensity and terrain slope. (AU)

• Processo FAPESP: 10/20835-1 - Quantificação e distribuição de hidrocarbonetos policíclicos aromáticos (HPAs) e metais no material particulado atmosférico e em solos superficiais e poeira de rua dos campi da Universidade de São Paulo (Butantã e EACH) e de seu entorno
• Beneficiário: Christine Laure Marie Bourotte
• Modalidade de apoio: Auxílio à Pesquisa - Regular