Diformylhydrazine as analytical reagent for spectrophotometric determination of iron(II) and iron(III)

被引：18

作者：

Nagabhushana, BM

Chandrappa, GT

Nagappa, B

Nagaraj, NH

机构：

[1] Univ Paris 06, Lab Chim Matiere Condensee, F-75252 Paris, France

[2] MS Ramaiah Inst Technol, Dept Chem, Bangalore 560054, Karnataka, India

[3] Karnataka State Pollut Control Board, Bangalore 560001, Karnataka, India

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2002年 / 373卷 / 4-5期

关键词：

Diformylhydrazine reagent; iron(III)-diformylhydrazine complexes; iron(II) determination; iron(III) determination; spectrophotometry;

D O I：

10.1007/s00216-002-1343-6

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The bidentate ligand diformylhydrazine (OHC-HN-NH-CHO), DFH, combines with iron(II) and iron(III) in alkaline media in the pH range 7.3-9.3 to form an intensely colored red-purple iron(III) complex with an absorption maximum at 470 nm. Beer's law is obeyed for iron concentrations from 0.25 to 13 mug mL(-1). The molar absorptivity was in the range 0.3258x10(4)-0.3351x10(4) L mol(-1) cm(-1) and Sandell's sensitivity was found to be 0.0168 mug cm(-2). The method has been applied to the determination of iron in industrial waste, ground water, and pharmaceutical samples.

引用

页码：299 / 303

页数：5

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