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Author Ola, I.; Drebenstedt, C.; Burgess, R.M.; Mensah, M.; Hoth, N.; Okoroafor, P.; Külls, C. url  doi
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  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  
  Keywords  
  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 Külls, C.; Jobin, J.; Weiler, M. openurl 
  Title Environmental analytics for water carbon management: enable WCM: Schlussbericht Type Report
  Year 2015 Publication Abbreviated Journal  
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  Publisher (up) Albert Ludwigs Universität, Professur für Hydrologie Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Kuells2015environmental Serial 65  
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Author Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G. url  doi
openurl 
  Title Dynamics of flood water infiltration and ground water recharge in hyperarid desert Type Journal Article
  Year 2008 Publication Groundwater Abbreviated Journal  
  Volume 46 Issue 3 Pages 450-461  
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  Publisher (up) Blackwell Publishing Inc Malden, USA Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Dahan2008dynamics Serial 27  
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Author Joseph, J.; Külls, C.; Arend, M.; Schaub, M.; Hagedorn, F.; Gessler, A.; Weiler, M. doi  openurl
  Title Application of a laser-based spectrometer for continuous in situ measurements of stable isotopes of soil CO2 in calcareous and acidic soils Type Journal Article
  Year 2019 Publication Soil Abbreviated Journal  
  Volume 5 Issue 1 Pages 49-62  
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  Publisher (up) Copernicus Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Joseph2019application Serial 15  
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Author Baram, S.; Ronen, Z.; Kurtzman, D.; Külls, C.; Dahan, O. url  doi
openurl 
  Title Desiccation-crack-induced salinization in deep clay sediment Type Journal Article
  Year 2013 Publication Hydrology and Earth System Sciences Abbreviated Journal  
  Volume 17 Issue 4 Pages 1533  
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  Publisher (up) Copernicus GmbH Place of Publication Editor  
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  Notes Approved no  
  Call Number THL @ christoph.kuells @ Baram2013desiccation Serial 21  
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