Investigation of heavy metal accumulation on different crop under irrigation with Kermanshah treated municipal wastewater

Document Type : Research Paper

Authors

1 . Department of Water Engineering, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran

2 Department of Water Engineering, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran

3 . Department of Environmental Health Engineering, School of Public Health, University of Medical Sciences, Kermanshah, Iran

4 Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran

Abstract

Abstract
In this study the accumulation of heavy metals including copper, iron, zinc, cadmium and manganese in different part (roots, stems and fruit or grain) of corn, barley, okra and parsley irrigated with treated municipal wastwater (TWW) of Kermanshah treatment plant and well water treatments (WEW as control treatment) investigated in randomized complete design for split plots with three replications for each crop in a real field conditions (in 2014). The results of statistical analysis showed that the effect of irrigation with wastewater on the accumulation of heavy metals in all the crops was statistically significant at the 5% level. Also, the accumulation amounts of iron, zinc and cadmium in different parts of studied crops under treated wastwater treatments were higher than well water treatments and were more than standard limits level in majority of cases. But it must be mentioned that although significant statistic and quantitative differences between treatments for accumulation of copper and manganese were found, but the amount of this metals in all crop parts and in the most cases was lower than permissible limits. Range of heavy metals in different crops under irrigation with wastewater was measured 14.1–37.7, 71.1–1165, 24.3–98.6, 0.1–2.30 and 15.8–269 mg kg-1 for copper, iron, zinc, cadmium and manganese, respectively. Additionally, heavy metals accumulation in roots were found higher than other parts of crops.
 
 

Keywords


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