Composite reactive articles for the determination of cyanide

Details Composite reactive articles for the determination of cyanide Composite reactive articles for the determination of cyanide

G - Physics

01

N

G01N 33/18 (2006.01) G01N 31/00 (2006.01) G01N 31/16 (2006.01) G01N 31/22 (2006.01)

Patent

CA 2111024

ABSTRACT OF THE DISCLOSURE composite reactive articles are useful for quantifying cyanide ions in solution. The composite reactive articles can he porous reactive supports comprising an inert substrate having immobilized thereon finely divided gold. The porous reactive supports can be particulate, porous fibrous membranes, or solution-cast membranes. Alternatively, the composite reactive articles can comprise porous fibrous membranes having enmeshed therein the aforementioned porous supports which can be in particulate or fibrous forms. The method for quantifying cyanide ions in solution comprising the steps of contacting and passing a solution containing cyanide ions through a reactive support comprising a porous, high surface area, inert substrate on which is immobilized finely divided elemental gold at a controlled rate to provide for a time to provide sufficient contact time for the gold and cyanide ions to react and provide a soluble gold cyanide complex, recovering the effluent comprising said gold cyanide complex, and determining the quantity of cyanide present in the gold cyanide complex.

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