关于镀液中硫酸根的测定,简便实用的还算燃烧法。然而该法不是定量回收,不同含量硫酸根的测定须用工作曲线查对结果。另外,如有氯化铁、有机硫化物、硝酸铁存在,在此条件下也有热分解,所以对于含Cl~-、NO_3~-,有机硫化物(如硫脲等)的试样不适用(见表1)。笔者探讨了一个测定方法:硫酸钡沉淀-电导滴定法。该法基于在含硫酸根的溶液中滴加标准氯化钡 Determination of sulfate on the bath, simple and practical fairly burning method. However, the method is not quantitative recovery, the determination of different levels of sulfate with the working curve to check the results. In addition, ferric chloride, organic sulfides and ferric nitrate are present, and thermal decomposition occurs under these conditions. Therefore, it is not suitable for samples containing Cl -, NO 3 -, and organic sulfides (such as thiourea) See table 1). The author discusses a determination method: barium sulfate precipitation - conductivity titration method. The method is based on the dropwise addition of standard barium chloride to the sulfate-containing solution