Comparison of Ni enrichment and background concentrations in the Southeastern Black Sea sediments

ALKAN A., ALKAN N., Aktas M.

ENVIRONMENTAL FORENSICS, vol.22, pp.364-371, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22
  • Publication Date: 2021
  • Doi Number: 10.1080/15275922.2020.1850559
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Environment Index, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.364-371
  • Keywords: Enrichment factor, Black Sea sediments, metal, nickel, sediment quality
  • Karadeniz Technical University Affiliated: Yes


Surface sediment samples were collected at 104 stations in 34 different locations in seasonal periods in 2013-2014 on the southeastern coasts of the Black Sea. Nickel concentrations were measured with ICP-MS after microwave digestion and were higher in two seperate region than that of others. Relatively high Ni concentrations were found in Bafra (148 +/- 18 mg/kg), Derekoy (147 +/- 24 mg/kg), Canik (95 +/- 35 mg/kg), caltiburnu (129 +/- 13 mg/kg), carsamba (127 +/- 4 mg/kg), Terme/unye (94 +/- 28 mg/kg), Akcaabat (95 +/- 13 mg/kg), carsibasi (77 +/- 14 mg/kg), Vakfikebir (64 +/- 5 mg/kg) and Gorele (53 +/- 15 mg/kg). Nickel concentrations were higher than Effects Range-Medium (ERM) limits in the western and middle part of the region. Ni enrichment levels in sediments were calculated from both core data and earth crust values as a background. It was determined that the enrichment factors found by using earth crust values produced quite misleading results due to the geological variation of the region. It is also concluded that Ni concentrations in marine sediments of the southeastern coasts of the Black Sea are related to terrestrial geological structure.