Heavy metals (Zinc, Copper) in sediment and macrobenthose of Namrood River in Tehran Province

Subject Areas : Marine Biology

M. Shapoori ¹ , M. Rezaei ² , A. Kamali ³

1 - Department of Natural Resources, Islamic Azad University Savadkooh Branch
2 - Department of Natural Resources, Islamic Azad University Science and Research Branch
3 - Department of Natural Resources, Islamic Azad University Science and Research Branch

Received: 2014-03-10 Accepted : 2015-08-16 Published : 2015-12-21

Keywords: Copper, Zinc, Tehran province, Gammarus pulex, Chironomidae, Namrood River,

Abstract :

Benthic macroinvertebrate communities are one of the key biological components considered for the assessment of benthic integrity in the context of the Water Framework Directive. The effect of industrial and agricultural wastewater effluent on water quality, habitat quality, and benthic macroinvertebrates of an urban stream in Namrood River located in Firoozkooh (Tehran province, Iran) was investigated in this study. The Namrood River is situated by the main road and is being polluted by pollutants from tourism industry and recreational centers, gas stations, sewage from villages, agricultural wastewater and fish culture effluent.  In the present study, three stations were selected, one station as blank and two stations, up and downstream were selected to sample the sediments and Chironomidae and Gammarus pluex in both cold and warm seasons of the year. The copper and zinc levels were measured in sediment and benthos. The results showed that copper and zinc concentration range in benthos were 0.170-0.966 and 0.187-3.846 ppm, respectively.  Sediments of the upstream station had the highest copper concentration among the samples in both cold and warm seasons of the year and the highest concentration of Zn was observed in sediments of upstream station in cold season.Comparing the average concentration of studied elements with WHO permissible limits showed concentrations lower than standard for Copper and Zinc element in sediment and benthos.‌

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