Study on the relationship between speciation of heavy metals and their ecotoxicity

Zhang Manping; Wang Juying; Bao Junbo

doi:10.1007/BF02843822

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Study on the relationship between speciation of heavy metals and their ecotoxicity

Updated：2023-05-16

- Study on the relationship between speciation of heavy metals and their ecotoxicity
- Journal of Oceanology and Limnology Vol. 10, Issue 3, Pages: 215-222(1992)
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- DOI：10.1007/BF02843822
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- Published：1992
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Manping, Z., Juying, W. & Junbo, B. Study on the relationship between speciation of heavy metals and their ecotoxicity., Chin. J. Ocean. Limnol. 10, 215–222 (1992). https://doi.org/10.1007/BF02843822
DOI：

Manping, Z., Juying, W. & Junbo, B. Study on the relationship between speciation of heavy metals and their ecotoxicity., Chin. J. Ocean. Limnol. 10, 215–222 (1992). https://doi.org/10.1007/BF02843822 DOI：

摘要

Abstract

Heavy metal is a main pollutant in the marine ecosystem

so study on the effect of heavy metal on phytoplankton is important. Algae (Chaetoceros sp.

Dunaliella sp.

Dicrateria zhanjiangenis Hu. var. sp.) were laboratory cultured to observe the effect of heavy metals on their growth. The effect of different metal ion concentration

the detoxication effect of complexation agents and the growth of algae in different media and different nutrition levels were studied to evaluate the effect of metal speciation. It is proved that trace amount of heavy metals can stimulate the growth of algae cells but that high concentration is lethal. The sequence of toxicity is Cd2+>Zn2+>Pb2+. In ordinary nutrition conditions

the detoxication sequence of complexation agents toChaetoceros sp. is EDTA >sodium salicylate>sodium oxalate >sodium citrate>sulfanilic acid>O-phenanthroline. This is in good conformity with the stability constant sequence of these agents with copper and good evidence that toxicity of metal ion is related to its activity and not to its total concentration.

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references

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