title: Spatial and temporal distribution of aliphatic hydrocarbons and linear alkylbenzenes in the particulate phase from a subtropical estuary (Guaratuba Bay, SW Atlantic) under seasonal population fluctuation.
abstract: Guaratuba Bay, a subtropical estuary located in the SW Atlantic, is under variable anthropogenic pressure throughout the year. Samples of surficial suspended particulate matter (SPM) were collected at 22 sites during three different periods to evaluate the temporal and spatial variability of aliphatic hydrocarbons (AHs) and linear alkylbenzenes (LABs). These compounds were determined by gas chromatography with flame ionization detection (GC-FID) and mass spectrometry (GC/MS). The spatial distributions of both compound classes were similar and varied among the sampling campaigns. Generally, the highest concentrations were observed during the austral summer, highlighting the importance of the increased human influence during this season. The compound distributions were also affected by the natural geochemical processes of organic matter accumulation. AHs were associated with petroleum, derived from boat and vehicle traffic, and biogenic sources, related to mangrove forests and autochthonous production. The LAB composition evidenced preferential degradation processes during the austral summer.
authors.affiliation: Centro de Estudos do Mar da Universidade Federal do Paraná, P.O. Box 61, 83255-976 Pontal do Paraná, PR, Brazil; Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos (PGSISCO) da Universidade Federal do Paraná, P.O. Box 61, 83255-976 Pontal do Paraná, PR, Brazil. Electronic address: anadauner@gmail.com.
authors.forename: Ana Lúcia L
authors.initials: ALL
authors.lastname: Dauner
authors.affiliation: Centro de Estudos do Mar da Universidade Federal do Paraná, P.O. Box 61, 83255-976 Pontal do Paraná, PR, Brazil. Electronic address: ccmart@ufpr.br.
authors.forename: César C
authors.initials: CC
authors.lastname: Martins
mesh_terms: D001267:Atlantic Ocean; D061006:Bays / Q000737:chemistry*; D001555:Benzene Derivatives / Q000032:analysis*; D004784:Environmental Monitoring; D063366:Estuaries; D019015:Geologic Sediments / Q000737:chemistry; D006838:Hydrocarbons / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001555:Benzene Derivatives; D006838:Hydrocarbons; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical
keywords: Degradation; Hydrocarbons; Sources; Spatial variations; Suspended particulate matter; Temporal variations