A - Papers appearing in refereed journals
Knight, B. and McGrath, S. P. 1995. A method to buffer the concentrations of free Zn and Cd ions using a cation exchange resin in bacterial toxicity studies. Environmental Toxicology And Chemistry. 14 (12), pp. 2033-2039.
|Authors||Knight, B. and McGrath, S. P.|
The chemical form or species of metal present in a growth system is crucial to the toxicity of that metal. A growth medium is described in which the free metal concentration of either Zn or Cd is known. A method using a cation exchange resin as a buffer to maintain free metal ion concentrations during microbial growth is discussed. Using a buffered system, free concentrations of 3.4 mu g Cd L(-1) and 57 mu g Zn L(-1) reduced the growth rate of a sensitive isolate of Rhizobium leguminosarum biovar trifolii. The results demonstrate that to assess the true toxicity of Cd and Zn, the free ion concentration must be considered and that small free concentrations must be buffered.
|Keywords||Environmental Sciences; Toxicology|
|Year of Publication||1995|
|Journal||Environmental Toxicology And Chemistry|
|Journal citation||14 (12), pp. 2033-2039|
|Digital Object Identifier (DOI)||doi:10.1897/1552-8618(1995)14[2033:AMTBTC]2.0.CO;2|
|Open access||Published as non-open access|
|Funder project or code||107|
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