Metabolites in bile of fish from São Sebastião Channel, São Paulo, Brazil as biomarkers of exposure to petrogenic polycyclic aromatic compounds     

da Silva DA  Buzitis J  Krahn MM  Bícego MC  Pires-Vanin AM 《Marine pollution bulletin》2006,52(2):175-183

This study reports the analysis of polycyclic aromatic compound (PAC) metabolites, as biomarkers of exposure to PACs in marine environment. PAC metabolites were measured in bile samples from 14 species of demersal fish caught in the São Sebastião Channel (SSC), SE Brazilian coastline. Naphthalene (NPH) equivalents, phenanthrene (PHN) equivalents, and benzo[a]pyrene (BaP) equivalents were quantified using a reverse-phase high-performance liquid chromatography coupled with fluorescence detection method. For all samples, the means (±standard deviation, n = 37) of concentrations obtained for NPH, PHN, and BaP equivalents were, respectively, 290,000 ± 200,000 ng/g, 18,000 ± 14,000 ng/g, and 970 ± 1900 ng/g. These results indicate recent exposure of these fish to PACs in their environment. In addition, two species (Cyclichthys spinosus and Prionotus nudigula) of fish were analyzed in order to investigate local sources of PAC contamination in the SSC and the influence of the petroleum terminal in fish caught in remote areas. The results showed that these fish species potentially migrate along the channel, especially P. nudigula. Correlations among groups of PAC metabolites indicate the same petrogenic source for NPH and PHN equivalents and a combustion source (e.g., automobile, ships) for BaP equivalents. The ratio BaP/PHN equivalents (0.05 ± 0.07, n = 37) confirms the predominance of petrogenic PACs for contamination by these chemicals in this region.  相似文献   

Tachylyte in Cenozoic basaltic lavas from the Czech Republic and Iceland: contrasting compositional trends     

Ulrych  Jaromír  Krmíček  Lukáš  Teschner  Claudia  Řanda  Zdeněk  Skála  Roman  Jonášová  Šárka  Fediuk  Ferry  Adamovič  Jiří  Pokorný  Richard 《Mineralogy and Petrology》2017,111(5):761-775

Mineralogy and Petrology - Tachylytes from rift-related volcanic rocks were recognized as: (i) irregular veinlets in host alkaline lava flows of the Kozákov volcano, Czech Republic, (ii)...  相似文献   

The role of precursory structures on Tertiary deformation in the Black Forest—Hegau region     

Egli  Daniel  Mosar  Jon  Ibele  Tobias  Madritsch  Herfried 《International Journal of Earth Sciences》2017,106(7):2297-2318

International Journal of Earth Sciences - Structural inheritance of preexisting crustal discontinuities is widely accepted to have played a crucial role during the Cenozoic tectonic evolution of...  相似文献   

MELVILLE,P. ULMER (Hrsg.): 13th Texas Symposium on Relativistic Astrophysics. World Scientific,Singapore 1987, xxi+634 Seiten,Preis: $ 90.::. ISBN 9971-50-307-7     

Jon P. Mücket 《Astronomische Nachrichten》1990,311(2):143-143

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