Publication: Influences of cadmium and zinc interaction and humic acid on metal accumulation in Ceratophyllum demersum
Issued Date
2007-03-01
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ISSN
15732932
00496979
00496979
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2-s2.0-33846873007
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Mahidol University
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SCOPUS
Bibliographic Citation
Water, Air, and Soil Pollution. Vol.180, No.1-4 (2007), 225-235
Suggested Citation
Sushera Bunluesin, Prayad Pokethitiyook, Guy R. Lanza, Julian F. Tyson, Maleeya Kruatrachue, Baoshan Xing, Suchart Upatham Influences of cadmium and zinc interaction and humic acid on metal accumulation in Ceratophyllum demersum. Water, Air, and Soil Pollution. Vol.180, No.1-4 (2007), 225-235. doi:10.1007/s11270-006-9265-0 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/24463
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Title
Influences of cadmium and zinc interaction and humic acid on metal accumulation in Ceratophyllum demersum
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Abstract
Interactions between Zn and Cd on the accumulation of these metals in coontail, Ceratophyllum demersum were studied at different metal concentrations. Plants were grown in nutrient solution containing Cd (0.05-0.25 mg l-1) and Zn (0.5-5 mgl-1). High concentrations of Zn caused a significant decrease in Cd accumulation. In general, adding Cd solution decreased Zn accumulation in C. demersum except at the lowest concentration of Zn in which the Zn accumulation was similar to that without Cd. C. demersum could accumulate high concentrations of both Cd and Zn. The influence of humic acid (HA) on Cd and Zn accumulation was also studied. HA had a significant effect on Zn accumulation in plants. 2 mg l-1of HA reduced Zn accumulation at 1 mg l-1level (from 2,167 to 803 mg kg-1). Cd uptake by plant tissue, toxicity symptoms and accumulation at 0.25 and 0.5 mg l-1, were reduced (from 515 to 154 mg kg-1and from 816 to 305 mg kg-1, respectively) by addition of 2 mg l-1of HA. Cd uptake reached a maximum on day 9 of treatment, while that of Zn was observed on day 15. Long-term accumulation study revealed that HA reduced toxicity and accumulation of heavy metals. © 2006 Springer Science+Business Media B.V.