三正辛胺萃取-双波长作图法同时测定铁和锌  

Simultaneous Determination of Zinc and Iron by Trioctylamine Extraction-Double Wavelength Graphical Method

作　　者：刘宇[1] 刘立行[1] 程淑秋 

机构地区：[1]抚顺石油学院应用化学系,抚顺113001

出　　处：《冶金分析》1997年第6期4-6,14,共4页Metallurgical Analysis

摘　　要：用三正辛胺萃取分离干扰离子,以5-Br-PADAP-TritonX-100为显色体系。提出了一种同时测定两组分的双波长作图法,并用于铁和锌的同时测定。线性范围:Fe^(3+)0～12μg/25ml,Zn^(2+)0～10μg/25ml。合成样回收率100.9%～102.4%,铝合金标样分析结果的相对误差小于±3.0%.方法简便、准确。Trioctylamine is used to extract and separate zinc and iron from interference ions.5-Br-PADAP—Triton X-100 is used as a coloured system.A double wavelength graphical method for simultaneous determination of zinc and iron has been developed.Linear ranges are 0-12μg/25ml for iron(Ⅲ)and 0-10μg/25ml for zinc(Ⅱ).The extraction recorvery of analytical results for standard samples of aluminium alloy is less than ±3.0%.This method is simple and accurate.

关 键 词：双波长作图法 三正辛胺 萃取 显色体系 铁 锌 

分 类 号：O614.811[理学—无机化学] O614.241[理学—化学]