IMPURITY MEASURING METHOD

摘要

An object (10) to be measured is driven, and a stick (11) prepared by cooling and solidifying a solution into a rod-like shape is brought into contact with the surface of the object (10) to be measured, thereby dissolving a natural oxide film and the like formed on the surface of the object (10). After the stick (11) is brought into contact with the overall surface of the object to be measured, the solution (13) held at a distal end portion of the stick (11) is analyzed by chemical analysis to measure the type and amount of an impurity adhered on the surface of the object (10).