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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。
With n-octylamine extraction and separation of interfering ions to 5-Br-PADAP-TritonX-100 for the color system. A dual wavelength mapping method for simultaneous determination of two components was proposed and used for the simultaneous determination of iron and zinc. Linear range: Fe ~ (3+) 0 ~ 12μg / 25ml, Zn ~ (2+) 0 ~ 10μg / 25ml. The recoveries of synthetic samples ranged from 100.9% to 102.4%, and the relative errors of the results of the aluminum standard samples were less than ± 3.0%. The method was simple and accurate.