Abstract
The duckweed Lemna minor is one of the smallest vascular plants with a known strong capacity for metal accumulation. L. minor is proposed as a phytomonitor for coal ash drainage systems and for bioassay studies directed to complexation and speciation. The duration of the experiment can be restricted to fourteen days; it is then possible to determine accurate data of differences in growth of the clone forming plant by using image processing techniques. Leaching of pulverized fuel ash (PFA) with acetic acid according to EPA instruction resulted in effects attributed to the acetic acid itself rather than to the metals in solution. Toxic effects of both leachates, ’natural’ and ’artificial’, are discussed. The order of toxicity of metals studied so far in separate metal experiments is Cd > Cu > Zn > As(Arsenite) > Se(Selenite) > Ge > B > Mo.
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Jenner, H.A., Janssen-Mommen, J.P.M. (1989). Phytomonitoring of pulverized fuel ash leachates by the duckweed Lemna minor . In: Munawar, M., Dixon, G., Mayfield, C.I., Reynoldson, T., Sadar, M.H. (eds) Environmental Bioassay Techniques and their Application. Developments in Hydrobiology, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1896-2_34
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DOI: https://doi.org/10.1007/978-94-009-1896-2_34
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