溴量法测定对羟基苯磺酸钠的含量

Determination of Hydroxy-benzenesulfonic Acid Monosodium Salt Sodium Phenolsulfonate with Bromimetry

[目的]研究测定对羟基苯磺酸钠含量的简便方法。[方法]采用溴量法测定对羟基苯磺酸钠的含量,以淀粉指示剂确定滴定终点。[结果]溴量法测定对羟基苯磺酸钠的含量标准偏差为0.004 688,相对误差为3.57%。[结论]溴量法测定对羟基苯磺酸钠的含量具有较高的精确度和准确度,且方法简便、快捷、易于推广。

[ Objective ] To establish a simple method for detecting Hydroxy-benzenesulfonie acid monosodium salt sodium phenolsuffonate content. [ Methods] Bromimetry was applied for measuring the sample concentration and starch indicator was used to determine the end point. [Results] The experiment showed that the standard deviation of Hydroxy-benzenesulfonie acid monosodium salt sodium phenolsulfonate content is 0. 004 688, accuracy is 3.57%. [ Conclusion] Determination of Hydroxy-benzenesulfonie acid monosodium salt sodium phenolsulfonate with bromimetry has high precision and accuracy. The method is simple and rapid, it can be used for the determination of Hydroxy-benzenesulfonic acid monosodium salt sodium phenolsuffonate.