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- W1502805422 abstract "A gold plating solution was treated with sulfuric acid, hydrogen peroxide and hydrazine sulfide, removing gold as precipitates and thoroughly reducing all arsenic to arsenic (III). Atomic absorption measurement for the samples prepared by this procedure showed that total amount of arsenic could be determined at approximately c.v. 3.0%.The amount of arsenic (III) was determined basically by direct atomic absorption measurement. The amount of arsenic (III) in the diluted gold plating solution measured directly, however, was found to contain 8.9% arsenic (V). This suggested that the amount of arsenic (III) should be calculated byAs(III)=B-0.089A/1-0.089……(1)A: Total amount of arsenicB: Amount of arsenic (III) measured directlyThis method of determining the amount of arsenic (III) was applied to actual gold plating solutions containing various amounts of arsenic and arsenic (III)/arsenic (V) ratios. It was confirmed that the amount of arsenic (III) in gold plating solutions could be determined at approximately c.v. 5.7%.It was also found that the amount of arsenic codeposited in gold plating films could be determined by the same procedures as for total arsenic analysis by simply adding a step in which the film was dissolved in aqua regia." @default.
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- W1502805422 date "1987-01-01" @default.
- W1502805422 modified "2023-09-30" @default.
- W1502805422 title "Determination of total amount of arsenic and arsenic (III) in gold plating solutions by continuous hydride-generation atomic absorption spectroscopy." @default.
- W1502805422 doi "https://doi.org/10.4139/sfj1950.38.223" @default.
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