Abstract
The alloy sample was dissolved in hydrofluoric acid and a portion of the resulting stock solution was heated with sulphuric acid to remove fluoride ion. Tin(II) chloride solution was then added to ensure complete reduction of Fe3+ to Fe2+. Solid sodium citrate was added to form a citrate complex with Fe2+. The polarographic peak of the Fe2+-citrate complex was then used as a measure of the percentage of iron in Zircaloy alloys.
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