Potential of <Emphasis Type="Italic">Micranthemum umbrosum</Emphasis> for phytofiltration of organic arsenic species from oxic water environment |
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| Authors: | Md Shariful Islam M Tajuddin Sikder M Kurasaki |
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| Institution: | 1.Environmental Adaptation Science, Division of Environmental Science Development, Graduate School of Environmental Science,Hokkaido University,Sapporo,Japan;2.Department of Agricultural Chemistry,Patuakhali Science and Technology University,Dumki, Patuakhali,Bangladesh;3.Department of Public Health and Informatics,Jahangirnagar University,Savar, Dhaka,Bangladesh;4.Group of Environmental Adaptation Science, Faculty of Environmental Earth Science,Hokkaido University,Sapporo,Japan |
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| Abstract: | Arsenic (As) is a toxic and carcinogenic metalloid that causes various hazards to human health. Phytofiltration is a more eco-friendly and green approach than chemoremediation, or other traditional technologies, for removing As from aquatic environments. Recently, Micranthemum umbrosum was shown as a promising candidate for phytofiltration of inorganic As species. This work examines the potential application of M. umbrosum to phytofiltration of organic As species, such as monomethylarsonic acid (MMAA, CH5AsO3) and dimethylarsinic acid (DMAA, C2H7AsO2), from oxic water environments. M. umbrosum plants were grown in two test concentrations of MMAA and DMAA, or a control, in a hydroponic experiment. After seven days, leaves accumulated 90 ± 3.2 and 48 ± 1.6 µg As g?1 (oven dry basis) from 1 µg As mL?1 of water added from MMAA and DMAA, respectively. Bioconcentration factor values and translocation factor values were always greater than 1.0, indicating that M. umbrosum was a good As accumulator and that leaves accumulated significantly higher amounts of As than stems and roots. Analysis of macro- and micronutrient data showed that M. umbrosum had higher resistance to organic As treatments than the control. These results confirm the potential application of M. umbrosum for phytofiltration of organic As from contaminated oxic water environments. |
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