title: Source identification of petroleum hydrocarbons in soil and sediments from Iguaçu River Watershed, Paraná, Brazil using the CHEMSIC method (CHEMometric analysis of Selected Ion Chromatograms).
abstract: A chemometric method based on principal component analysis (PCA) of pre-processed and combined sections of selected ion chromatograms (SICs) is used to characterise the hydrocarbon profiles in soil and sediment from Araucária, Guajuvira, General Lúcio and Balsa Nova Municipalities (Iguaçu River Watershed, Paraná, Brazil) and to indicate the main sources of hydrocarbon pollution. The study includes 38 SICs of polycyclic aromatic compounds (PACs) and four of petroleum biomarkers in two separate analyses. The most contaminated samples are inside the Presidente Getúlio Vargas Refinery area. These samples represent a petrogenic pattern and different weathering degrees. Samples from outside the refinery area are either less or not contaminated, or contain mixtures of diagenetic, pyrogenic and petrogenic inputs where different proportions predominate. The locations farthest away from industrial activity (Balsa Nova) contains the lowest levels of PAC contamination. There are no evidences to conclude positive matches between the samples from outside the refinery area and the Cusiana spilled oil.
authors.affiliation: Environmental Assessment & Monitoring Department, Petrobras Research Center (CENPES), Petroleo Brasileiro S.A. - PETROBRAS, Av. Horácio de Macedo, 950 - Cidade Universitária, Ilha do Fundão ZIP: 21941-915 Rio de Janeiro, RJ, Brazil. fabianagallotta@petrobras.com.br
authors.forename: Fabiana D C
authors.initials: FD
authors.lastname: Gallotta
authors.forename: Jan H
authors.initials: JH
authors.lastname: Christensen
mesh_terms: D001938:Brazil; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D019015:Geologic Sediments / Q000032:analysis*; D006838:Hydrocarbons / Q000032:analysis*; D010578:Petroleum / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D025341:Principal Component Analysis; D045483:Rivers / Q000737:chemistry*; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D006838:Hydrocarbons; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical