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化学学报
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化学学报 ›› 1953, Vol. 19 ›› Issue (4): 167-174. 上一篇    下一篇

论文

在均匀溶液中用碘酸盐作沉淀剂以测定铈

蔡淑莲   

  1. 复旦大学化学系
  • 投稿日期:1953-09-06 发布日期:2013-06-04

The Determination of Cerium by Precipitation as Iodate from Homogeneous Solution

SHU-LIEN TSAI   

  1. Department of Chemistry, Fu-Tan University
  • Received:1953-09-06 Published:2013-06-04

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489

被引次数

3

1.在均匀溶液中沉淀的碘酸铈,性质紧密,便利于过滤和洗涤.烧灼成为氧化铈后,适合于作为铈的定量分析.2.利用碘酸亚铈能溶解于稀酸溶液而碘酸铈则不溶的区别,先用过氧化氢把全部铈离子还原,再加入碘酸铵,然后进行氧化,使碘酸铈在均匀溶液中沉淀出来.3.本方法适用于含氧化铈2.5—250毫克的样品.4.所得沉淀的分子式经初步测定为 Ce2(IO3)7(OH)·xH2O,其中x的数值不定,涨落在3与5之间.

When cent iodate is precipitated from acid solution by the addition of a soluble iodate,a gelatinous precipitate is obtained,which is difficult to filter and wash.The precipitate must be redissolved and reprecipitated as oxalate for final ignition to carie oxide.