Gravimetric Determination of Gold in Alloys

Avinur, P.

doi:10.1002/ijch.196700009

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1967

1976

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Cited by 2 publications

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“…While platinum constituted a grave interference in the gravimetric method [11], it is seen from the data (Figure 1 and Table I) that it does not interfere in the spectrophotometric method when present in the alloys in small amounts. The results of analyses of various and adverse synthetic gold alloys which were specially prepared for the spectrophotometric method of determination are listed in Table II.…”

Section: Resultsmentioning

confidence: 88%

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Direct Spectrophotometric Determination of Gold in Alloys as Chloroaurate

Avinur

1967

Israel Journal of Chemistry

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A method is presented for a simple and direct determination of gold in alloys, utilizing a preliminary separation of gold from an alloy, and its subsequent conversion to chloroauric acid. The optical density of the chloroaurate ion is measured at two selected wavelengths, calculating the gold content of alloys by using the absorbance difference technique as developed by Glasner and Avinur. A suitable technique enables wide‐range determination in various samples of gold alloys ranging from 0.001% to over 90% gold content. Platinum does not interfere when present in small amounts in the alloy.

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Section: Resultsmentioning

confidence: 88%

“…Spectrophotometric analysis of synthetic samples previously[11) prepared for gravimetric method of deter-…”

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confidence: 99%