摘要
丙酮肟在酸性介质中加热水解生成具有还原性的羟胺 ,并将加入的 Fe( )还原为 Fe( ) ,再用 Ce( )滴定 Fe( ) ,从而间接测定丙酮肟。选择了最佳实验条件 ;该法已用于测定火力发电厂锅炉钝化液中丙酮肟 ,相对标准偏差≤1 .1 4% ( n=6 ) ,加标回收率在 97.7%～ 1 0 0 .0 %之间 ;讨论了共存物质对测定的影响。
The method of redox titration for the indirect determination of acetoxime by titrating Fe(Ⅱ) with Ce(Ⅳ) was developed.The Fe(Ⅲ) was quantitatively reduced to Fe(Ⅱ) by hydroxylamine which was produced by hydrolysis of acetoxime in acidic medium on heating.The optimum experiment conditions were selected.The method can be used for the determination of acetoxime in boiler passivation solution of heat power plant.The results indicated that the average recovery was in the range of 97 7%～100 0% with the RSD≤1 14%( n =6).This method is simple,convenient and accurate.
出处
《分析试验室》
CAS
CSCD
2000年第2期21-23,共3页
Chinese Journal of Analysis Laboratory
关键词
氧化还原滴定
丙酮肟
锅炉钝化液
Redox titration
Acetoxime
Hydrolysis
Bolier passivation solution
