Publication: Influences of cadmium and zinc interaction and humic acid on metal accumulation in ceratophyllum demersum.
Issued Date
2007
Resource Type
Language
eng
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Mahidol University
Mahidol University
Mahidol University
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Springer
Bibliographic Citation
Water, Air & Soil Pollution. Vol. 180, (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 & Soil Pollution. Vol. 180, (2007), 225-235. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/9895
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Title
Influences of cadmium and zinc interaction and humic acid on metal accumulation in ceratophyllum demersum.
Other Contributor(s)
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 1-1) and Zn (0.5-5
mg 1-1). 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 1-1 of HA reduced Zn accumulation at 1 mg1-1
level (from 2,167 to 803 mg kg-1). Cd uptake by plant tissue, toxicity symptoms
and accumulation at 0.25 and 0.5 mg 1-1, were reduced (from 515 to 154 mg kg-
1 and from816 to 305 mg kg-1, respectively) by addition of 2 mg 1-1 of 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.