摘要
本文提出了以meso-四(4-三甲铵基苯)卟啉为显色剂的双波长分光光度法同时测定微量铁和铜的方法.测定铁和铜的波长对分别为392.0—420.0nm和413.0—357.5nm.铁、铜量均在0.4～2.6μg/25ml范围内成直线关系.应用本法测定了自来水、精镁样品中铁、铜的含量,准确度和精密度都令人满意.
A sensitive dual-wavelength spectrophotometric method has been developed for the simultaneous determination of trace Fe and Cu, based on the formation of colour complexes of the two metals with the meso-tetra ( p-trimethylammoninm phcnyl ) porphyrin in pH 4.5-5.5 buffer medium. The pairs of wavelength o'f the determination of Fe and Cu are 392.0-420.4nm and 413.0-357.5nm respectively. The calibratio'n curves are rectilinear in the range of 0.4-2.6ug/25ml for Fe and Cu. This method has been applied to the direct simultaneous determination of Fe and Cu in the tap water and pure magnisium with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1991年第5期23-25,共3页
Metallurgical Analysis
