| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a determination method which enables the accurate isolation and determination of copper oxides and copper sulfides. <P>SOLUTION: A voltage is applied to a copper-containing sample (an object 13 to be measured ) immersed in an electrolytic solution BL to reduce a corrosion product in the surface of the sample and measure changes in the quantity of electricity at the time of the application of the voltage. The corrosion product is determined on the basis of measurement results in the method. The electrolytic solution is a mixed solution of an LiOH aqueous solution of 1 M or above or an LiOH aqueous solution of 0.5 M or above and an aqueous solution of a hydroxide of an alkali metal (except Li) of 3 M or above, and the corrosion product is a copper oxide and a copper sulfide. Application conditions are changed according to the thickness of the corrosion product. <P>COPYRIGHT: (C)2009,JPO&INPIT |
