硫代硫酸钠标准溶液在各国药典中多采用重铬酸钾为基准.其实验条件,如所用酸度、碘化钾浓度及作用时间等,在文献上都有较详尽的记载.并且也有不少文献提出修正及改进的方法.此外,硫代硫酸钠标准液亦可用标准碘溶液标定其当量浓度.标准碘溶液当量浓度有用直接称取法配制,亦有用三氧化二砷 Sodium thiosulfate standard solution in many countries Pharmacopoeia more use of potassium dichromate as a benchmark.The experimental conditions, such as acidity, potassium iodide concentration and the role of time, in the literature are more detailed records.And there are also many documents Amendment and improvement of the method.In addition, sodium thiosulfate standard solution can also be used standard iodine solution calibration equivalent concentration of standard iodine equivalent weight directly available method of preparation, but also with arsenic trioxide