无砷锌还原测定锡合金中砷的分光光度法研究

Sutdy of Method of Spectorphotometry Determination of Arsenic with Zinc Metal free from Arsenic Reduction in Tin Alloy

本文研究了无砷锌还原测定微量砷的新银法。根据试验结果，吸收波长选择λ=410nm，表观摩尔吸光系数ε=2.51×104，砷的线性范围是0～13μg／10mL。用于锡合金中砷的测定，获得满意结果。

A new silver method for determination of microamount of arsenic with Zinc Metal free from Arsenic reduction has been established.According to experimental result, the measuring wavelenghth is 410 mn,the apparent molar absorption coefficient is 2.51×104 L.mol-1·cm-1.Beer's law is obeyed for 0~13 μg/10 mL.The proposed method has been applted to the determination of arsenic in tinalloy. with satisfactory results.