还原蒸馏——紫外光度法测定钢铁中微量硫的研究

The Reduction Distillation-Ultraviolet Range Spectrophotometry for the Determination of Micro Amount of Sulfur in lron & Steel Samples

本文介绍了一种可测定钢铁中微量硫（ｐｐｍ）的还原蒸馏——紫外光度法，并通过实验确定了最佳测定条件．本法测得结果准确可靠，对含硫量为４ｐｐｍ的标样多次测得结果的相对标准偏差（Ｒ，Ｓ，Ｄ）为８．４％，该方法的回收率为９８．９±２．３％（ｎ＝１０）．

This paper describes the reduction distillation-ultraviolet range spectrophotometry for the determination of micro amount of sulfur in iron & steel samples and some tests of related conditions. The result of determination is accurate. The standard samples of 0.0004% sulfur content are measured several times, and the R. S. D of it is 8.4%. The average yield is 98.9±2.3%(n=10).