摘要
样品经硝酸分解 ,用硫酸钡共沉淀分离铅后 ,锡在硫酸氯化钠底液中 ,在峰电位- 0 .5 2V处产生良好的还原波 ,能直接测定电解锰用阳极板中锡。回收率为 98.0 %～ 10 1.6% ,相对标准偏差为 0 .91%～ 2 .98% ,方法简便、快速、准确 ,优于容量法 。
In a base solution of H 2SO 4 and NaCl, a favorable reductive wave of Sn(Ⅱ) is observed at the peak potential of -0.52V ( vs .SCE). Based on this fact, a method for the determination of tin in anode plate which is an alloy composed mainly of lead, tin, antimony and silver, used in the production of electrolytic manganese. The sample is dissolved in diluted HNO 3, and H 2SO 4 together with BaCl 2 is added to separate the lead as a mixed crystal precipitate of Pb·Ba(SO 4) 4. RSD′s found are in the range of 0.91% to 2.98%, and recoveries are in the range of 98.0% to 101.6%. The proposed method has been used in the control analysis of the production of electrolytic manganese.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2002年第4期178-179,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
湖南省教委自然科学基金资助项目 ( 99c69)
关键词
示波极谱法
测定
电解锰
阳极板
锡
Oscillopolarography
Tin
Anode plate
Electrolytic manganese
