摘要
采用乙二胺四乙酸二钠(EDTA)掩蔽锶,在pH值为5.9条件下,钡离子与重铬酸钾生成铬酸钡沉淀,分离后,用碘量法测定。相对标准偏差1.02%～2.17%,加标回收率95%～103%。
A method for the determination of barium in strontium carbonate is introduced. It masks strontium with EDTA. In a medium of NaOAc - HO Ac buffer solution at pH 5. 9,Ba ( I ) reacts with potassium dichromate to form barium chro-mate precipitate. After separation, it is determined by iodimetry. The RSD obtained is between 1. 02%-2. 17% and the recovery rate is in the range of 95%-103%.
出处
《无机盐工业》
CAS
2000年第5期45-46,共2页
Inorganic Chemicals Industry
