I_2－CCl_4萃取体系间接光度法测定焊剂中的Fe^（3＋）

I_2-CCl_4 Extraction Spectrophotometry of Fe￣(3+) in Solder

本文研究结果表明，在ｐＨ＝１．０～２．０的酸性溶液中Ｆｅ３＋与ＫＩ作用游离出碘，以ＣＣｌ４萃取光度法测碘［１，２］，用于间接测定焊剂中Ｆｅ３＋的含量。

The analysis method of Fe3+ in solder was developed using I2-CCl4 extraction spectrophotometry. Fe3+ in solder can indirectly be analysed by spectrophotometry of I2 in CCl4 solution, which was released by action of Fe3+ with KI solution (pH=1. 0～2. 0).