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Author Ola, I.; Drebenstedt, C.; Burgess, R.M.; Mensah, M.; Hoth, N.; Okoroafor, P.; Külls, C.
Title Assessing petroleum contamination in parts of the Niger Delta based on a sub-catchment delineated field assessment Type Journal Article
Year 2024 Publication (up) Environmental Monitoring and Assessment Abbreviated Journal
Volume 196 Issue 6 Pages 585
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Abstract The Niger Delta in Nigeria is a complex and heavily contaminated area with over 150,000 interconnected contaminated sites. This intricate issue is compounded by the region’s strong hydrological processes and high-energy environment, necessitating a science-based approach for effective contamination assessment and management. This study introduces the concept of sub-catchment contamination assessment and management, providing an overarching perspective rather than addressing each site individually. A description of the sub-catchment delineation process using the digital elevation model data from an impacted area within the Delta is provided. Additionally, the contamination status from the delineated sub-catchment is reported. Sediment, surface water and groundwater samples from the sub-catchment were analyzed for total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAHs), respectively. Surface sediment TPH concentrations ranged from 129 to 20,600 mg/kg, with subsurface (2-m depth) concentrations from 15.5 to 729 mg/kg. PAHs in surface and subsurface sediment reached 9.55 mg/kg and 0.46 mg/kg, respectively. Surface water exhibited TPH concentrations from 10 to 620 mg/L, while PAHs ranged from below detection limits to 1 mg/L. Groundwater TPH concentrations spanned 3 to 473 mg/L, with total PAHs varying from below detection limits to 0.28 mg/L. These elevated TPH and PAH levels indicate extensive petroleum contamination in the investigated sediment and water environment. Along with severe impacts on large areas of mangroves and wetlands, comparison of TPH and PAH concentrations with sediment and water quality criteria found 54 to 100% of stations demonstrated exceedances, suggesting adverse biological effects on aquatic and sediment biota are likely occurring.
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ISSN 1573-2959 ISBN Medium
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Notes Approved no
Call Number THL @ christoph.kuells @ Ola2024 Serial 290
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Author Orloff, K.G.; Mistry, K.; Charp, P.; Metcalf, S.; Marino, R.; Shelly, T.; Melaro, E.; Donohoe, A.M.; Jones, R.L.
Title Human exposure to uranium in groundwater Type Journal Article
Year 2004 Publication (up) Environmental Research Abbreviated Journal
Volume 94 Issue 3 Pages 319-326
Keywords Groundwater, Human exposure, Uranium, Urine
Abstract High concentrations of uranium (mean=620μg/L) were detected in water samples collected from private wells in a residential community. Based on isotopic analyses, the source of the uranium contamination appeared to be from naturally occurring geological deposits. In homes where well water concentrations of uranium exceeded the drinking water standard, the residents were advised to use an alternate water source for potable purposes. Several months after the residents had stopped drinking the water, urine samples were collected and tested for uranium. Elevated concentrations of uranium (mean=0.40μg/g creatinine) were detected in urine samples, and 85 percent of the urine uranium concentrations exceeded the 95th percentile concentration of a national reference population. Urine uranium concentrations were positively correlated with water uranium concentrations, but not with the participants’ ages or how long they had been drinking the water. Six months later, a second urine sample was collected and tested for uranium. Urine uranium concentrations decreased in most (63 percent) of the people. In those people with the highest initial urine uranium concentrations, the urine levels decreased an average of 78 percent. However, urine uranium concentrations remained elevated (mean=0.27μg/g), and 87 percent of the urine uranium concentrations exceeded the 95th percentile concentration of the reference population. The results of this investigation demonstrated that after long-term ingestion of uranium in drinking water, elevated concentrations of uranium in urine could be detected up to 10 months after exposure had stopped.
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ISSN 0013-9351 ISBN Medium
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Call Number THL @ christoph.kuells @ orloff_human_2004 Serial 136
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Author Androvitsanea, A.; Fawzy, M.; Fuchs, J.; Külls, C.; Fahlbusch, H.; Heiden, J.
Title Hydrologische Bedingungen im Heraion von Samos vom 12. bis 8. Jh. v. Chr. und ihre Bedeutung für die wasserbauliche Infrastruktur Type Journal Article
Year 2018 Publication (up) Environmental Water Engineering Abbreviated Journal
Volume 1 Issue 1 Pages 1-21
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Call Number THL @ christoph.kuells @ Androvitsanea2018hydrologische Serial 17
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Author Rehm-Berbenni, C.; Druta A.; Åberg, G.; Neguer J.; Külls, C.; Patrizi, G.; Pacha, T.; Kienzle, P.; Bugini, R.; Fiore, M.G.
Title Isotope Technologies Applied to the Analysis of Ancient Roman Mortars Type Book Whole
Year 2005 Publication (up) European Commission Abbreviated Journal
Volume Issue Pages
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Abstract Results of the CRAFT Project EVK4 CT-2001-30004
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Call Number THL @ christoph.kuells @ Serial 73
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Author Benites Lazaro, L.L.; Bellezoni, R.; Puppim de Oliveira, J.; Jacobi, P.R.; Giatti, L.
Title Ten Years of Research on the Water-Energy-Food Nexus: An Analysis of Topics Evolution Type Journal Article
Year 2022 Publication (up) Frontiers in Water Abbreviated Journal
Volume 4 Issue Pages
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Call Number THL @ christoph.kuells @ article Serial 86
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