亚甲基蓝分光光度法测定锑浸出液中硫化钠

湿法炼锑中常采用硫化钠作为从锑矿中提取锑硫化物的浸出剂。准确测定锑浸出液中的硫化钠浓度对掌握和完善湿法炼锑工艺、提高生产效率有重要作用。将亚甲基蓝分光光度法用于锑浸出液中硫化钠的测定,考察了波长选择、体系酸度、显色时间、基质干扰等条件,测评、优化了方法;将方法应用于锑浸出液中硫化钠的测定,方法检出限为0.002mg/L,测定结果相对标准偏差≤3%,加标回收率≥90%。方法能较理想地应用于锑浸出液中硫化钠的测定,丰富了锑浸出液中硫化钠的测定方法,也为相关研究提供了支持与参考。

Determination of Sodium Sulfide in Antimony Lixivium by Methylene Blue Spectrophotometric Method

Sodium sulfide is often applied as the extractant to extract antimony sulfide from antimony concentrates in hydrometallurgy. It is vital to determine the sodium sulfide in the lixivium exactly, it is conducive to comprehending, complement the technology and improving the efficiency. The article is to appraise and optimize the methylene blue spectrometric method to the determination of sodium sulfide in antimony lixivium, with the conditions of wavelength selection, systematical acidity, incubation time, matrix effect etc by testing. The detection limit of the method is 0.002 mg/L, RSD of results is lower than 3%, the recovery rate is more than 90%, it is appropriate to be applied to determine the sodium sulfide in antimony lixivium, which enriches the methods and conducts the relative researches.