As thiosulfate is easy of oxidation,it is necessaryto avoid the oxidizing ion such as NO_3~-, to add Na_2SO_3 as a stabilizingagent and to prepare the organic amine thiosulfate freshly in use.

• 由于S_2O_3~(2-)易被氧化.；因此萃取时不应有氧化性离子如NO_8~-等存在；并且要加入Na_2SO_3作稳定剂