高纯金属的分析技术问题日本日矿共石综合技术本部中村靖发表了他对高纯金属分析技术问题的看法。随着产业的发展，开发出高性能的新金属材料，其中杂质的浓度在ｐｐｂ级，有些杂质元素限制在ｐｐｔ级。他简要叙述了本课题的现状。以往金属中杂质分析的定量下限只是ｐｐｍ... Analysis of high-purity metals technical problems Nippon Kyoritsu General Technology Division Nakamura published his views on technical issues of high-purity metal analysis. With the development of the industry, new high-performance metal materials have been developed, in which the impurity concentration is in the ppb level and some impurity elements are limited to the ppt level. He briefly described the current status of this topic. In the past, the limit of quantitation of impurities in metals was only ppm ...