[Analysis of organic additives in copper-plating brightener by high performance liquid chromatography].

This paper describes a high performance liquid chromatographic method for analysis of organic additives in copper\|plating brightener. The copper\|plating brightener was filtered through 0.45 μm micropore membrane and determined on a Spherisorb\|C\-6H\-5 column, with V (methanol)∶ V (water)=30∶70 mobile phase at the flow rate of 1.5 mL/min, and detected at UV 210 nm.2\|benzimidazolethiol,ethylene thiourea,1\|propanesulfonic acid 3,3′\|dithio\|bis\|disodium salt were separated and determined. The recoveries were more than 99% with CV less than 1%. The method is simple and rapid.