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Assessing toxicity of copper, cadmium and chromium levels relevant to discharge limits of industrial effluents into inland surface waters using common onion, Allium cepa bioassay

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dc.contributor.author Hemachandra, C.K.
dc.contributor.author Pathiratne, A.
dc.date.accessioned 2017-10-27T05:55:28Z
dc.date.available 2017-10-27T05:55:28Z
dc.date.issued 2015
dc.identifier.citation Hemachandra, C.K., and Pathiratne, A., (2015). Assessing toxicity of copper, cadmium and chromium levels relevant to discharge limits of industrial effluents into inland surface waters using common onion, Allium cepa bioassay, Springer US. Vol 94 (2). 199-20. en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/17905
dc.description.abstract Toxicity of copper, cadmium and chromium relevant to established tolerance limits for the discharge of industrial effluents into inland surface waters was evaluated by Alliumcepa bioassay. The roots of A. cepa bulbs exposed to Cu2+ (3 mg L−1) individually or in mixtures with Cd2+ (0.1 mg L−1) or/and Cr6+ (0.1 mg L−1) exhibited the highest growth inhibition, mitotic index depression and nuclear abnormalities. Root tip cells exposed to Cr6+ or Cd2+ alone or in mixture displayed significant chromosomal aberrations in comparison to the controls. EC50s for root growth inhibition followed the order Cu2+ < Cd2+ < Cr6+ indicating greater toxicity of copper. The results show that the industrial effluent discharge regulatory limits for these metals need to be reviewed considering potential cyto-genotoxicity to biological systems. en_US
dc.language.iso en en_US
dc.publisher Springer US. en_US
dc.subject Bioassay en_US
dc.subject Heavy metals en_US
dc.subject Industrial effluents en_US
dc.subject Tolerance limits en_US
dc.title Assessing toxicity of copper, cadmium and chromium levels relevant to discharge limits of industrial effluents into inland surface waters using common onion, Allium cepa bioassay en_US
dc.type Article en_US


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