Methods for determining the concentration of cyanide in sour aqu

Details Methods for determining the concentration of cyanide in sour aqu Methods for determining the concentration of cyanide in sour aqu

1995-03-24

1996-03-19

Housel, James C.

Chemistry: analytical and immunological testing

Nitrogen containing

Cyanide or isocyanide

436119, G01N 3100

Patent

active

055003737

ABSTRACT:
A method for determining the concentration of cyanide in an aqueous system is disclosed. The method determines the cyanide concentration from a determination of reference thiocyanate concentrations and will measure the cyanide concentration in the presence of sulfides.

REFERENCES:
patent: 4804631 (1989-02-01), Lue-Hing et al.
patent: 5431877 (1995-07-01), Brucken et al.
Ingersoll et al., "Development and Evaluation of Procedures for the Analysis of Simple Cyanides, Total Cyanides, and Thiocyanate in Water and Wastewater", U.S. Dept. of Commerce, National Technical Information Service, Oct. 1983.
Kuban et al., "Selective Determination of Gases by Two-Stage Membrane Differentiated Flow Injection Analysis. Determination of Trace Hydrogen Cyanide in the Presence of Large Concentrations of Hydrogen Sulfide", Anal. Chem., 1992, 64, 1106-1112.
Luthy et al., "Determination of Cyanide Levels in Hygas Wastewater", Environmental Studies Institute-Carnegie Mellon University, Pittsburgh, PA, Nov. 1978.
Sweileh, "Determination of Cyanide and Thiocyanate By A Spectro-photometric Flow-Injection Method", Analytica Chimica Acta, 220 (1989), pp. 65-74.
Meeussen et al., "Spectrophotometric Determination of Total Cyanide, Iron-Cyanide Complexes, Free Cyanide and Thiocyanate In Water By A Continuous-Flow System", Analyst, vol. 114, Aug. 1989, pp. 959-963.

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