BIOACCUMULATIONS OF OXYTETRACYCLINE AND HEAVY METAL ON THE EARTHWORM APORRECTODEA LONGA

Document Type : Novel Research Articles

Abstract

Impacts of antibiotic and heavy metals contaminations on agricultural soils attracted world attention. The present study aims to estimate the bioaccumulation of Oxytetracycline (OTC) and selected heavy metals (Fe, Cu, Zn) at Shandwil Island, Sohag, Egypt where they use the manure as an organic fertilizer. Concentrations of OTC, Cu, Fe and Zn in the earth worm (Aporrectodea longa) and the corresponding concentration in litter and soil at 25 locations at the studied site were determined. Some environmental factors (air/soil temperature, soil pH, soil water content and organic matter) were recorded at each investigated location. A. longa showed a significantly higher OTC concentration than litter and soil while studied heavy metals in soil showed higher concentrations than in earthworm and litter. Biomagnification (BMF) and bioconcentration (BCF) factors of OTC were 6.76 and 32.86, respectively. However, BMF and BCF of studied metals were relatively less than OTC and decreased in the following sequence Cu<Fe<Zn. Multiple regression analysis was used to show the effect of studied heavy metals and environmental factors on OTC concentration and bioaccumulation.

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Assiut University Journal of Multidisciplinary Scientific Research
Volume 47, Issue 2
December 2018
Pages 19-34

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