A biotic ligand model predicting acute copper toxicity for barley (Hordeum vulgare): influence of calcium, magnesium, sodium, potassium and pH

Chemosphere
Xuedong WangYibing Ma

Abstract

The effects of selected cations and pH on the acute toxicity of copper (Cu) to barley root elongation were investigated to develop an appropriate biotic ligand model (BLM). The results showed that increasing activities of Mg(2+) and Ca(2+), but not Na(+) and K(+), linearly increased the EC50 (as Cu(2+) activity). Unchanged EC50 at solution pH less than 6.5 and sharply decreased EC50 with increasing of solution pH when greater than 6.5 can be explained by toxicity of the CuHCO(3)(+), CuCO(3)(aq) and CuOH(+) complexes. Conditional binding constants were obtained for the binding of Cu(2+), CuHCO(3)(+), CuCO(3)(aq), CuOH(+), Mg(2+) and Ca(2+) with biotic ligand: logK(CuBL) 6.33, logK(CuHCO(3)BL) 5.71, logK(CuCO(3)BL) 5.70, logK(CuOHBL) 6.39, logK(MgBL) 2.92 and logK(CaBL) 1.96. Using the estimated constants, a BLM was successfully developed to predict Cu toxicity to barley root elongation as a function of solution characteristics.

References

Jan 31, 2002·Environmental Science & Technology·Karel A C de Schamphelaere, Colin R Janssen
Nov 24, 2004·Environmental Toxicology and Chemistry·Erik SmoldersMike J McLaughlin
Dec 16, 2004·Environmental Science & Technology·Soumya Niyogi, Chris M Wood
Mar 29, 2006·Environmental Toxicology and Chemistry·Koen OortsErik Smolders
Mar 29, 2006·Environmental Toxicology and Chemistry·Paula M C AntunesAstrid Voigt
Jan 24, 2007·Ecotoxicology and Environmental Safety·K LockC R Janssen
Jun 2, 2009·Ecotoxicology and Environmental Safety·Bo LiYibing Ma
Jun 24, 2010·Ecotoxicology and Environmental Safety·Xuedong WangLuo Hua

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Citations

Apr 20, 2016·Journal of Environmental Sciences (China)·Xuedong WangLuo Hua
Aug 21, 2013·Environmental Toxicology and Chemistry·Masoud M Ardestani, Cornelis A M van Gestel
Sep 15, 2014·Environmental Pollution·Masoud M ArdestaniCornelis A M van Gestel
Feb 4, 2016·Environmental Toxicology and Chemistry·Yanqing LinDominic M Di Toro
Feb 23, 2020·Bulletin of Environmental Contamination and Toxicology·Masoud M Ardestani
Jun 28, 2017·Environmental Science and Pollution Research International·Yi-Min WangJi-Zhou Li
Sep 23, 2020·Ecotoxicology and Environmental Safety·Xuedong WangRavi Naidu

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