Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"petrogenic"”.
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Biomarkers of Human Exposure and Effect to Petrogenic Polycyclic Aromatic Hydrocarbons
… the 2010 Deepwater Horizon (DWH) oil spill. Petrogenic polycyclic aromatic hydrocarbons (PAHs) found in crude oil have the potential to bioaccumulate in seafood and render consumers vulnerable to adverse health effects. Despite the knowledge that alkylated PAHs abundant in petrogenic PAH …
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Petrogenic Polycyclic Aromatic Hydrocarbon Levels and Health of Gulf Coast Communities Following the Deepwater Horizon Oil Spill
… five million barrels of crude oil, containing petrogenic polycyclic aromatic hydrocarbons (PAHs), into the Gulf of Mexico. Few studies have described the effects that the Deepwater Horizon oil spill has had on human health. Utilizing an ongoing longitudinal cohort study we set out to …
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Petrogenic comparison of early crystal-poor ash-flow tuffs, San Juan volcanic field, south-central Colorado, A
Includes bibliographical references (pages 195-203).
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The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application
… analysis of organic biomarkers to (a) resolve petrogenic from pre-aged vascular plant organic carbon (OC) in continental margin sediments, (b) investigate the underlying mechanisms controlling the anomalously old ages that are often observed for the terrestrial component of sedimentary OC, and …
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Organic geochemistry of an oil and gas seep in northern Gulf of Mexico sediments
… per mil) indicated that the gas has a major petrogenic component. δD values for methane, ethane, propane and butanes were -172, -101, -104, -101 per mil. Compositional variability of C₂⁺ gases among cores suggests the possible regional influence of gas hydrate formation. Compositional and …
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The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application
… analysis of organic biomarkers to (a) resolve petrogenic from pre-aged vascular plant organic carbon (OC) in continental margin sediments, (b) investigate the underlying mechanisms controlling the anomalously old ages that are often observed for the terrestrial component of sedimentary OC, and …
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Optimising the decommissioning of pipeline protection structures in the North Sea
… was discovered in high concentrations with a petrogenic source. The results drive towards developing an ecological risk assessment in decommissioned concrete mattresses, especially with regard to polypropylene rope. A method was developed to assess atmospheric emissions and energy use for …
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Assessing the fate of PAHs in the Boston Inner Harbor using semipermeable membrane devices (SPMDs)
… PAHs into these sections of the harbor is of petrogenic origin. The abundance of small analytes in the samples suggested a low-molecular weight petroleum source such as diesel, creosote, and/or coal tar. The ratios of pyrene-to-fluoranthene suggested another type of origin. Based on the …
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Spatial and temporal dynamics of biogeochemical processes in the Fraser River, Canada : a coupled organic-inorganic perspective
… of organic carbon and distinguish between petrogenic and biospheric organic carbon, which is critical to assessing the role of rivers in long-term atmospheric CO2 consumption. The estimated terrestrial residence time of biospheric organic carbon in the Fraser basin is 650 years, which is …
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Spatial and temporal dynamics of biogeochemical processes in the Fraser River, Canada : a coupled organic-inorganic perspective
… of organic carbon and distinguish between petrogenic and biospheric organic carbon, which is critical to assessing the role of rivers in long-term atmospheric CO2 consumption. The estimated terrestrial residence time of biospheric organic carbon in the Fraser basin is 650 years, which is …
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Geochemical properties of the Beni Bousera (N. Morocco) peridotites : a field and laboratory approach to understanding melt infiltration and extraction in an orogenic peridotite massif
… peridotites and dunites were formed by different petrogenic processes than the remainder of the massif. Trends in the CaO-MgO-Al 203-SiO 2 system and trace element patterns suggest partial melting of the peridotite played a significant role in the evolution of the massif, as has been previously …
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The development and application of statistical sampling regime to map out hydrocarbons in sediments.
… of weathered oil arising from a limited petrogenic input. Spatial structure analysis shows the existence of a trend in the variogram. Additionally, the spatial pattern in the contour maps of the measured parameters shows that the regionalized variables exhibited non-stationarity and were …
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Sediment-water exchange of polycyclic aromatic hydrocarbons in the lower Hudson Estuary
… of the dissolved PAH fraction was derived from petrogenic sources. In contrast, the same source ratios for the total (dissolved and sorbed) PAH concentrations indicated that only 55% of the total were petrogenically-derived. The observations in this work suggest that efforts to regulate and …
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Metals and polycyclic aromatic hydrocarbons in environmental matrices of the Fleet Lagoon, UK and toxicological investigations using the marine polychaete Hediste diversicolor.
… PAH’s at site 2 were identified as being from petrogenic sources. Exposure investigations using the environmentally relevant concentrations of Pb and pyrene found in sediment of the Fleet lagoon identified that both contaminants, alone and in combination negatively affect burrowing rates of H …
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Bioaccumulation and Toxicokinetics of Polycyclic Aromatic Compounds and Metals in Giant Floater Mussels (Pyganodon grandis) Exposed to a Simulated Diluted Bitumen Spill
… to their parent counterpart, demonstrating petrogenic PAC profiles. We detected significantly greater TPACs concentrations in mussels exposed to dilbit-contaminated water (25.92 – 27.79 µg g-1, ww Lipid, n=9, at day 25 of the uptake phase) compared to mussels from the Control (average of …
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Monitoring of Persistent Organic Pollutants (POPs) in marine biota from the Catania Gulf (Sicily, Italy) and development of new sensitive analytical methods for their detection
… three- to six-ring PAHs, suggesting a mixture of petrogenic and pyrogenic sources. Considering that the data reported in literature are very few and controversial, the results obtained by this preliminary study clearly indicate the need of additional and in-depth investigations. Finally, a new …