Uyen Nguyen

Uyen Nguyen
Pennsylvania State University | Penn State · Department of Geosciences

BSc

About

15
Publications
544
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Citations

Publications

Publications (15)
Article
Full-text available
A significant portion of oil released during the Deepwater Horizon disaster reached the Gulf of Mexico (GOM) seafloor. Predicting the long-term fate of this oil is hindered by a lack of data about the combined influences of pressure, temperature, and sediment composition on microbial hydrocarbon remineralization in deep-sea sediments. To investigat...
Data
Gas chromatography–Mass spectrometry (GC-MS) and quantification methods. (DOCX)
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Depletion (%) of total n-alkane and total PAH of individual samples. (TOC: total organic carbon, Carb: carbonate in the sediments, P: pressure, T: temperature, WD: water depth, SED: sediment fraction, WAF: water fraction). (DOCX)
Data
Depletion of different PAH compound groups to compare the extent of biodegradation as number of rings increases. (C1: methyl, C2: ethyl or dimethyl, C3: trimethyl, C4: tetramethyl; Naph: napthalene, PNT: phenanthrene, Fluo: fluorene, DBT: dibenzothiophene, Py: pyrene, 11H-benzoF: 11H-benzo[b]fluorene, Chy: chrysene). (TIFF)
Data
Change in ratios of C17 n-alkane/pristane and C18 n-alkane/phytane after 18 days. A, sediment fractions (SED) and B, water fractions (WAF). Initial ratios are represented by the black square. Samples are color-coded according to sampling water depths. The dashed arrow represents interpreted direction of increasing biodegradation extent. (TIF)
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Background hydrocarbons in un-incubated sediments. (DOCX)
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Selected Ion Monitoring method for alkylated PAHs. Each compound group is identified based on a quantitative ion and a confirmation ion m/z (Zeigler et al., 2008; Robbat Jr. and Wilton, 2014*). * Zeigler C., MacNamara K., Wang Z., Robbat Jr. A. Total alkylated polycyclic aromatic hydrocarbon characterization and quantitative comparison of selected...
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Summary of experimental and analytical procedures. (TIF)
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Depletion in total cyclohexanes (m/z 83) after 18 days. The dashed arrow represents interpreted direction of increasing biodegradation extent. (TIF)
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Depletion of total PAHs after 18 days of incubation of oil in water fraction (WAF, triangles). Initial total PAHs are represented by squares. Samples are color-coded according to sampling water depths. The dashed arrow represents interpreted direction of increasing biodegradation extent. (TIF)
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Distribution of hopanes and triaromatic sterane compound groups, showing the similarity between day 0 and day 18 samples, to justify the use of C30 hopane and C26-TAS as internal conservative oil biomarker in our study. (DOCX)
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Calculation of n-alkane depletion due to off-gassing at 15 Mpa. (DOCX)
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Oil hydrocarbons analyzed in this study and their quantitative molecular ion (m/z). (DOCX)
Data
Depletion of different n-alkanes to compare the extent of biodegradation as number of carbon increases. A. Mean and standard errors plot for depletion of each n-alkane for all day-18 samples; B. Boxplot for depletion of each n-alkane for all day-18 samples. (TIFF)

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