Bio-Accumulation of chromium in Raphanus sativus irrigated with highly chromium contaminated water


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Volume :

10

Issue :

1

Abstract :

Chromium is a heavy metal which leads to environmental hazards. The growth of plant and development is effected by toxicity of Chromium. Now a day the soil and groundwater are getting highly contaminated with chromium (Cr) due to many tannery and chemical industries effluent. The soil and groundwater are getting highly contaminated with chromium (Cr) due to many tannery and chemical industries effluent. The indiscriminate disposal of tannery and chemical wastes is the main cause of chromium contamination in soil and groundwater. It has been reported that most (>90%) of the soil samples nearby these industries has high concentration of Cr (>200 mg kg- 1 ) which exceeds the maximum permissible limit prescribed by many Environmental Protection Agencies. The Cr contaminated soil and water has exhibited greater risk in terms of both salinity and solidity hazards and was found unsuitable for both human consumption and irrigation purpose as it will lead to carcinogen & mutagen in human body. In this present study, Radish (Rapahanus sativus) plants have been grown in uncontaminated soil and highly Chromium contaminated water has been supplied as irrigation during the growing period. The variation of Bioaccumulated Chromium during initial growth period in different parts of Radish plant (i.e. root and leave) has been analyzed and studied. The morphological study has been done after during this period. The growth rate has been retarded with contaminated water irrigation. The yield of biomass in root and leave has been decreased to 33. 33% and 23.52% respectively. Similarly the width and length of leave and root has been decreased considerably.

Keyword :

Chromium contaminated, Bio-accumulated Chromium, Growing period, un contaminated soil
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