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Issue 1118, 1969
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A modified procedure for the determination of gold with 4,4′-bis(dimethylamino)thiobenzophenone

Abstract

The spectrophotometric determination of gold with 4,4′-bis(dimethylamino)thiobenzophenone has been adapted for routine use in the range 0 to 50 µg of gold.

Composite reagent solutions containing 4,4′-bis(dimethylamino)thiobenzo-phenone, acetic acid, sodium acetate and either ethanol or butanol are convenient and stable, if protected from light.

The reagents give results with 95 per cent. confidence limits of ±1·2 µg (with the ethanolic reagent) and ±1·5 µg (with the butanolic reagent) of gold for a single determination of the absorbance.

Procedures with either reagent are applicable to the determination of up to 50 µg of palladium, silver or mercury.

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Article type: Paper
DOI: 10.1039/AN9699400397
Citation: Analyst, 1969,94, 397-398
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    A modified procedure for the determination of gold with 4,4′-bis(dimethylamino)thiobenzophenone

    A. J. Christopher, Analyst, 1969, 94, 397
    DOI: 10.1039/AN9699400397

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