| 摘要 |
PROBLEM TO BE SOLVED: To provide an analysis method by which a sulfur component contained in an electroless plating solution can quantitatively be analyzed with high reproducibility even in the case of being a trace amount of several to several tens ppm and to provide an electroless plating method using the above method. SOLUTION: In this analysis method, one or more metallic compounds selected from gallium, indium, antimony and bismuth compounds are added to an electroless plating solution containing a trace amount of sulfur component to prepare an insoluble salt, and a trace amount of sulfur component is quantitatively analyzed by the transmittance of a suspension, and the electroless plating method uses the above method.
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