Absorption of Mercury from Polluted Soil by Rice Plant(Case Study: Farms of Amol Industrial Suburban Area)

Document Type : Research Paper

Authors

1 M.Sc. Student of EnvironmentalEng., Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor

2 Faculty Member of Environmental Eng., Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor

3 Assist. Prof.of Chemistry, Payam-e-Noor University, Tehran

Abstract

Mercury has recognized as one of the most toxic heavy metals, which many industries generate and dispose to the environment. Few studies are done about mercury accumulation in soil and bioconcentration and transfer factor of mercury in rice plant cultivated in industrial areas. In this study samples were taken randomly from 10 farms in vicinity of Amol industrial suburban area with three replications. Samples were measured by the LECO AMA 254 Advanced Mercury Analyzer according to ASTM D-6733method. Also the parameters related to the quality of the soil were measured. The mean of mercury concentration in soil, root, stem and grain were found 0.031 ±0.012 mg/kg, 0.074 ±0.0163 mg/kg, 0.058 ±0.008 mg/kg and 0.051 ±0.0083 mg/kg respectively. The calculated transfer factor of mercury to various organs and bioconcentration factor were < 1 and 2.46 respectively. Pearson correlation test showed a positive correlation between mercury concentration in soil with mercury concentration in grain and also a negative correlation between pH with mercury concentration in root and soil. It is concluded that rice plant have high potential for phytoremediation of mercury from soil.         

Keywords

References

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Journal of Water and Wastewater; Ab va Fazilab ( in persian )
Volume 24, Issue 1 - Serial Number 1
Serial number:85
March 2013
Pages 69-74

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