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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 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 (down) Approved no
Call Number THL @ christoph.kuells @ Ola2024 Serial 290
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Author Krüger, N.; Külls, C.; Bruggeman, A.; Eliades, M.; Christophi, C.; Rigas, M.; Eracleous, T.
Title Groundwater recharge estimates with soil isotope profiles-is there a bias on coarse-grained hillslopes? Type Conference Article
Year 2020 Publication EGU General Assembly Conference Abstracts Abbreviated Journal
Volume Issue Pages 9840
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Call Number THL @ christoph.kuells @ Krueger2020groundwater Serial 42
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Author Tziritis, E.; Aschonitis, V.; Balacco, G.; Daras, P.; Doulgeris, C.; Fidelibus, M.D.; Gaubi, E.; Gueddari, M.; Güler, C.; Hamzaoui, F.; others
Title MEDSAL Project-Salinization of critical groundwater reserves in coastal Mediterranean areas: Identification, risk assessment and sustainable management with the use of integrated modelling and smart ICT tools Type Conference Article
Year 2020 Publication EGU General Assembly Conference Abstracts Abbreviated Journal
Volume Issue Pages 2326
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Call Number THL @ christoph.kuells @ Tziritis2020medsal Serial 43
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Author Külls, C.H.; Eichinger, F.; Fader, H.J.; Leistert, H.; Lorenz, G.; Szakacs, E.
Title New Environmental Analytical Techniques to Monitor Carbon Sequestration Type Conference Article
Year 2011 Publication 1st EAGE Sustainable Earth Sciences (SES) Conference and Exhibition Abbreviated Journal
Volume Issue Pages 268
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Area Expedition Conference European Association of Geoscientists & Engineers
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Call Number THL @ christoph.kuells @ Kuells2011new Serial 47
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Author Frey, S.; Külls, C.; Schlosser, C.
Title New Hydrological Age-Dating techniques using cosmogenic radionuclides Beryllium-7 and Sodium-22 Type Conference Article
Year 2011 Publication Proc. IAEA Conf. Monacco Abbreviated Journal
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Call Number THL @ christoph.kuells @ Frey2011new Serial 48
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