摘要
采用铅偶氮胂Ⅲ光度法测定巴氏合金中的杂质铅时 ,由于溶液中铅的浓度低于吸光灵敏度最大区间的浓度 ,在溶液中分别加入等量的铅 ,使铅的浓度在吸光灵敏度最大区间浓度范围内 ,然后以光度法测定。研究了铅偶氮胂Ⅲ光度法的最佳条件 ,用该法测定标准样品中的铅 ,测定结果与标准值基本一致。精密度为 0 .0 0 8 6 % (n =4 )。
The quantitative lead was added into the sample solution to let the concentration come up to be in the interval range suitable for determining by the spectrophotometry of arsenazo Ⅲ, which was used to determine lead in the Babbitt alloy.The optimum conditions were researched and the result of standard sample was basically consistent with the certified value with the precision of 0.0086 %(n=4)
出处
《化学分析计量》
CAS
2004年第2期20-22,56,共4页
Chemical Analysis And Meterage
