Sources and Temporal Patterns of Polychlorinated Biphenyls Around a Large South American Grain-Shipping Port (Paranaguá Estuarine System, Brazil)

Combi, Tatiane; Taniguchi, Satie; Ferreira, Paulo Alves de Lima; Mansur, Andressa V.; Figueira, Rubens César Lopes; Mahiques, Michel Michaelovitch de; Montone, Rosalinda Carmela; Martins, César de Castro

doi:10.1007/s00244-012-9872-2

Cited by 31 publications

(10 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(PES), in southern Brazil, hosts the third largest harbor in the country (Martins et al 2010). PES covers a total area of 612 km 2 and presents a great diversity of pristine or preserved habitats, and sustains small-scale fisheries, incipient aquaculture, and urban touristic areas (Combi et al 2013).…”

mentioning

confidence: 99%

Baseline levels of oxidative stress biomarkers in species from a subtropical estuarine system (Paranaguá Bay, southern Brazil)

Sardi

Renaud

Lana

et al. 2016

Marine Pollution Bulletin

View full text Add to dashboard Cite

Offshore petroleum exploration has increased the risks of oil spills in coastal tropical and subtropical habitats. Monitoring tools are needed to assess and protect environmental health. We determined baseline values of antioxidant biomarkers (CAT, SOD, GPx, GST, MDA) for five ecologically relevant species in a subtropical system in southern Brazil. Regional baseline levels are compared with literature data as a basis to eventually test their efficacy as post-spill monitoring tools. Differences in the antioxidant response among species, contamination, and seasons were tested using univariate and multivariate analyses. The bivalves Anomalocardia flexuosa and Crassostrea rhizophorae and the catfish Genidens genidens emerge as suitable sentinel species. Seasonality is the main factor accounting for biomarkers variability, and not background contamination level. However, interactions between season and contamination level are also significant, indicating that biomarkers respond to complex environmental settings, a fact that needs to be fully understood for designing proper monitoring programs.

show abstract

mentioning

confidence: 99%

Baseline levels of oxidative stress biomarkers in species from a subtropical estuarine system (Paranaguá Bay, southern Brazil)

Sardi

Renaud

Lana

et al. 2016

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…Organic compounds such as PAHs, polychlorinated biphenyls (PCBs), and organochlorinated pesticides (OCPs) have already been reported at this estuary and may represent an environmental problem, considering the possible negative effects on aquatic organisms even at low concentrations.…”

Section: Methodsmentioning

confidence: 99%

“…The analytical procedure for PCBs and OCPs was based on the methodology described in Combi et al with minor modifications. The sediment (10 g) was extracted using ASE (Dionex) in 7‐min static cycles (130 °C; 1500 psi) with a mixture of n‐hexane/acetone (1:1, v/v).…”

Section: Methodsmentioning

confidence: 99%

Characterization of quality of sediments from Paranaguá Bay (Brazil) by combined in vitro bioassays and chemical analyses

Rizzi

Pérez-Albaladejo

Fernandes

et al. 2016

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

The present study characterizes the quality of sediments from the Paranaguá Estuarine Complex (South Brazil). Polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs) were determined in sediment samples together with a series of different in vitro bioassays. The fish hepatoma cell line (PLHC-1) was used to determine the presence of cytotoxic compounds and CYP1A- and oxidative stress-inducing agents in sediment extracts. Ovarian microsomal fractions from sea bass (Dicentrarchus labrax) were used to detect the presence of endocrine disrupters that interfered with the synthesis of estrogens (ovarian CYP19). Despite the relatively low levels of pollutants and no evidence of negative effects based on guideline levels, sediments collected close to harbors were enriched with CYP1A-inducing agents and they showed higher cytotoxicity. In contrast, sediments from internal areas inhibited CYP19 activity, which suggests the presence of endocrine disrupters at these sites. Overall, the selected bioassays and the chemistry data led to the identification of potentially impacted areas along the Paranaguá Estuarine Complex that would require further action to improve their environmental quality. Environ Toxicol Chem 2017;36:1811-1819. © 2016 SETAC.

show abstract

“…The 210 Pb activity was assayed by means of the photopeaks at 47 keV, 609 keV ( 214 Bi) and 661 keV, and the detailed method (calibration, detector counting efficiency and errors) has been fully described by Combi et al . (2013). To determine the detector counting efficiency in the radionuclide photopeak region, IAEA reference materials were employed.…”

Section: Methodsmentioning

confidence: 99%

Depositional history of sedimentary sterols around Penguin Island, Antarctica

et al. 2016

Self Cite

View full text Add to dashboard Cite

Lipid biomarkers are potential tools for identifying the sources, diagenesis and reactivity of organic matter (OM) in marine systems, including in Antarctica where the particular environmental characteristics have motivated several studies of organic markers. Sedimentary sterol distributions were determined in two sediment cores (PGI-1 and PGI-2) collected from the marine environment around Penguin Island, Antarctica, during the 2007–08 summer. The cores were sectioned at 1 cm intervals and the sterols were analysed using gas chromatography with flame ionization detection. The results indicate that the sterols were subjected to decades of degradation and transformation with depth in both cores. However, an expected progressive conversion of stenols to stanols (evaluated by 5α-stanols/Δ5-stenols ratio) within the deepest sediment layers was not clear, suggesting low degradation rates. In PGI-1, the deposition of large quantities of penguin guano affected the distribution of sterols and, consequently, primary production was favoured by the ornithogenic soil input. The results contribute to the understanding of the current processes associated with primary sources and transformation of OM in this important region of the Antarctic environment.

show abstract

Sources and Temporal Patterns of Polychlorinated Biphenyls Around a Large South American Grain-Shipping Port (Paranaguá Estuarine System, Brazil)

Cited by 31 publications

References 43 publications

Baseline levels of oxidative stress biomarkers in species from a subtropical estuarine system (Paranaguá Bay, southern Brazil)

Baseline levels of oxidative stress biomarkers in species from a subtropical estuarine system (Paranaguá Bay, southern Brazil)

Characterization of quality of sediments from Paranaguá Bay (Brazil) by combined in vitro bioassays and chemical analyses

Depositional history of sedimentary sterols around Penguin Island, Antarctica

Contact Info

Product

Resources

About