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  • Title: Electrophoretic analysis of cyanide depletion by Pseudomonas alcaligenes.
    Author: Zaugg SE, Davidson RA, Walker JC, Walker EB.
    Journal: Electrophoresis; 1997 Feb; 18(2):202-4. PubMed ID: 9080126.
    Abstract:
    Bacterial-facilitated depletion of cyanide is under development for remediation of heap leach operations in the gold mining industry. Capillary electrophoresis was found to be a powerful tool for quantifying cyanide depletion. Changes in cyanide concentration in aqueous suspensions of Pseudomonas alcaligenes bacteria and cyanide at elevated pH were easily monitored by capillary electrophoresis. The resulting data can be used to study rates of cyanide depletion by this strain of bacteria. Concentrations of these bacteria at 10(5) cells/mL were found to reduce cyanide from 100 ppm to less than 8 ppm in four days. In addition, other ions of interest in cyanide metabolism, such as formate, can be simultaneously analyzed. Direct UV detection of cyanide at 192 nm further simplifies the analytical method for these ions.
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