| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for simply and more accurately quantifying mercury in a tin plating layer with respect to a sample having the tin plating layer. SOLUTION: In this method for quantitatively analyzing mercury in the plating layer consisting of tin or a tin alloy of a sample, which is obtained by forming the plating layer consisting of tin or the tin alloy to a base material consisting of copper or brass, or a sample, which is obtained by forming the plating layer consisting of tin or the tin alloy to a base material made of a metal through a substrate layer consisting of copper or brass, a plating peeling solution containing 18 mass% of nitric acid and 1-10 mass% of ferric nitrate is brought into contact with the sample to dissolve the plating layer and concentrated nitric acid is subsequently added to the peeling solution containing dissolved components to prepare a mixture liquid while mercury is reduced and vaporized from the mixture liquid to be quantified by an atomic absorptiometric method. COPYRIGHT: (C)2009,JPO&INPIT
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