African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Heavy metal accumulations of Allium cepa L. as a bioindicator for air pollution in EreÄŸli, Turkey

Meltem MaraÅŸ Atabay1*,  Aysel KekillioÄŸlu2 and Metin Arslan3
  1Departments of Secondary Science and Mathematics Education, Biology Education Section, Faculty of Education, Karaelmas Üniversity, 67300, Kdz. EreÄŸli, Zonguldak, Turkey. 2Department of Biology, Faculty of Science and Art, NevÅŸehir University, NevÅŸehir, Turkey. 3Kırıkkale University, Kırıkkale Vocational High School, Department of Chemistry and Chemical Processing Technologies, Yahsihan,71450 Kırıkkale, Turkey.  
Email: [email protected]

  •  Accepted: 02 November 2011
  •  Published: 12 December 2011



EreÄŸli, a province with ıron-steel industrial activities, is situated on the coast of Black Sea in Northwestern Anatolia. Heavy metal pollution caused by industrial activities is a threat to environmental quality and human health. Allium cepa L. is a bioindicator due to its sensitivity to environmental pollution. Fe, Hg, Zn, Hg, Crshowed greater accumulation in its leaves in four different sampling points. A significant decrease at Hg and Pb concentrations was not seen in its leaves. This study showed that the leafy plants contaminated with toxic heavy metals during industrial activities and EreÄŸli’s air quality has been poor.


Key words: Heavy metal, bioindicator, ındustrial pollution, Western Anatolia.