硫化钼中总铁含量的测定

Determination of total iron content in molybdenum disulfide

以磺基水杨酸为显色剂,采用紫外分光光度法测定硫化钼中的总铁含量。实验结果表明:该方法分析步骤简单、分析速度快;在吸收波长为420 nm、磺基水杨酸用量为5 m L条件下,方法的选择性好,精密度和准确度较好,其中测量结果标准偏差为0.000 406、加标回收率为99.89%。该方法为硫化钼深度除铁提供一定的分析依据。

Adding 5-sulfosalicylic acid for color agent to the solution,the total iron content of molybdenum disulfide was determined by UV spectrophotometry.Results showed it had simple analysis procedure and quick analysis.Under the conditions of absorbance wave at 420 nm and the dosage of 5-sulfosalicylic acid of 5 m L,the method had a good selectivity and high precision and accuracy.The standard deviation of the measurement result was 0.000 406,the standard recovery rate was99.89%,and it provided a certain basis for the further removal of iron of molybdenum disulfide.