Effect of cadmium, zinc, copper and fluoranthene on soil bacteria

Cevik N., Karaca A.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.15, no.7, pp.619-625, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 7
  • Publication Date: 2006
  • Journal Name: FRESENIUS ENVIRONMENTAL BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.619-625
  • Keywords: flouranthene, heavy metals, bacteria, soil, AROMATIC-HYDROCARBONS, TOXICITY
  • Ankara University Affiliated: No

Abstract

The influence of Cd, Cu, Zn, and fluoranthene (FLA), separately and in combination applied with FLA, on the growth of soil bacteria were examined through a 90 days incubation period and compared with the no treatment (control). In the soils amended with all doses of Cd, Cu and Zn alone, and combined with FLA, total bacterial population was always significantly lower than that of the control soil. Significant reductions of bacterial counts were observed for both doses of heavy metals combined with FLA. Low concentration of heavy metals (50 mg kg(-1)), which was not affective when added separately, was found to reduce bacterial growth when applied in combination with FLA. At higher levels of heavy metals (150 mg kg(-1)), addition of FLA also increased the toxicity of the metals.