用鲁米诺-KIO4-Fe(1, 10-phen)32+体系的化学发光法测定痕量铁

Chemiluminescence of Lumindnol-KIO4-Fe(1, 10-phen)32+ System and Its Application

中文关键词:  配合物  化学发光  鲁米诺  Fe  1,10-菲咯啉

英文关键词:Complex  chemiluminescence  luminol  Fe  1,10-phenanthroline

中文摘要:

      本文利用鲁米诺-KIO₄-Fe(1,10-phen)₃²⁺配合物体系产生化学发光反应,建立了测定痕量铁的新的化学发光分析方法.该法以1,10-phen为配位体,铁的检出限为1.6×10^-7g/L,工作曲线响应浓度范围在1×10^-5-1×10^-3g/L.在测定2×10^-4g/L铁的相对标准偏差为3.5%.用于检测工业沉淀BaSO₄中痕量铁获得满意结果.

英文摘要:

      This paper reports a new complex chemiluminescence,i.e.luminol-IO₄-catalyzed by Fe(1,10-phenanthroline)₃²⁺ complex. Based on this catalysis a new chemiluminescence method for the determination of trace Fe(Ⅱ) is proposed. The detection limit is 1.6×10^-7g/L Fe(Ⅱ),the linear dynamic range is 1×10^-5-1×10^-3g/L Fe(Ⅱ) and the variation coefficient at an iron concentration of 2×10^-4g/L Fe(Ⅱ) is 3.5% (n=10).This method has ho satisfactorily applied to the determination of trace iron ion in precipitated BaSO₄ samples.