单柱离子色谱法测定化学镀镍液中的HPO_3^(2-)和H_2PO_2^-

Determination of HPO and H_2PO in Electroless Plating Bath by Single-Column Ion Chromatography

应用HlC 6A型离子色谱仪 ,以 1.5mmol/L苯甲酸钠作淋洗液 ,可快速分离和测定化学镀镍液中的HPO2 - 3和H2 PO- 2 。HPO2 - 3和H2 PO- 2 的线性范围分别为 10～ 2 50mg/L和 15～ 12 0mg/L ,精密度分别为 0 .5%和 1.3% ,最低检出浓度分别为 0 .7mg/L和 0 .8mg/L。

The hypophosphite ion and phosphite ion were separated by Shimadzu HIC 6A Ion Chromatography, and sodium benzoate (1.5 mmol/L) used as an eluate. Calibration curves were linear over concentration range 10～250 mg/L of hypophosphite ion and 15～120 mg/L of phosphite ion. The precisions were 0.5% for hypophosphite ion and 1.3% for phosphite ion.