青铜器粉状锈浸泡液中氯离子的离子色谱法分析

Analysis of Chloride Ion in Soaking Liquid of Powdery Rust of Bronze Ware Based on Ion Chromatography Method

有效去除氯离子是青铜器粉状锈去除的关键.工作中采用电导检测离子色谱法测定了青铜器粉状锈处理液中氯离子,10 min内完成分析检测.在离子色谱实验条件下,峰面积与氯离子浓度在0.1~20 mg/L范围内呈线性,检出限为0.03 mg/L,相对标准偏差在4.41%以下,回收率在98%~104%之间.该方法简单、快速,可以实时监测除锈溶液中氯离子的含量,能很好地反映器物的除锈程度.

Effective removal of chloride ions is the key to remove the powdery rust of bronze wares. In this work, the determination of chloride ion in powder rust treatment liquid of bronze ware by conductivity detection ion chromatography was completed in 10 minutes. Under the ex- perimental conditions of ion chromatography, the peak area and the concentration of chloride ion was linear in the range of 0.1 - 20 mg/L, the detection limit is 0.03 mg/L, the relative standard deviation is below 4.41% , the recovery was 98% - 104%. The method is simple and rapid, it can monitor the content of chloride ion in the rust removing solution in real time, and can well reflect the degree of rust removing of the artifacts.