Ecological assessment of heavy metals in soil around a coal-fired thermal power plant in Turkey

Turhan S., Garad A. M. K., Hancerliogullari A., Kurnaz A., Goren E., Duran C., ...More

ENVIRONMENTAL EARTH SCIENCES, vol.79, no.6, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 6
  • Publication Date: 2020
  • Doi Number: 10.1007/s12665-020-8864-1
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, IBZ Online, PASCAL, Aerospace Database, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Compendex, Computer & Applied Sciences, Environment Index, Geobase, INSPEC, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Çukurova University Affiliated: Yes


In this study, heavy metal concentrations in agricultural surface soil (0-5 cm) samples collected from the area around the Kangal lignite-fired thermal power plant were determined using energy-dispersive X-ray fluorescence spectrometry. Also, the pH values of agricultural soil samples were measured to assess the level of acidification. Geo-accumulation index (I-geo), enrichment factor (E-F), contamination factor (C-F), contamination degree (C-D), modified contamination degree (mC(D)), and pollution load index (I-PL) were estimated to assess the heavy metals pollution in soil samples. The average concentration of Fe, Ti, Mn, Cr, Ni, Zn, Zr, Co, Cu, Pb, As, Sn and Hg was found as 39,065 +/- 5096, 2262 +/- 738, 721 +/- 119, 713 +/- 236, 610 +/- 199, 82 +/- 37, 65 +/- 26, 64 +/- 19, 29 +/- 3, 17 +/- 7, 9 +/- 7, 3 +/- 1 and 2 +/- 1 mg kg(-1), respectively. The values of pH varied from 7.5 to 8.2 with an average value of 8.0 (moderately alkaline). The I-geo, E-F and C-F results reveal that the study area is heavily or very highly contaminated with Cr, Ni, and Hg. On the basis of the I-PL value, the soil samples are polluted with heavy metals. However, the mC(D) indicates moderate heavy-metal contamination of the soil samples.