A Comparative Spectrophotometric Study Using Ferrozine and 1,10-Ortho-phenanthroline to Evaluate the Iron Redox Ratio (Fe2+/ΣFe) in Glass Prepared by Microwave Heating

被引：12

作者：

Mandal, Biswajit ^{[1
]}

Sinha, Prasanta Kumar ^{[2
]}

Sen, Ranjan ^{[1
]}

Mandal, Ashis Kumar ^{[1
]}

机构：

[1] CSIR, Cent Glass & Ceram Res Inst, Glass Div, 196 Raja SC Mullick Rd, Kolkata 700032, India

[2] CSIR, Cent Glass & Ceram Res Inst, Mat Characterizat & Instrumentat Div, 196 Raja SC Mullick Rd, Kolkata 700032, India

来源：

ANALYTICAL SCIENCES | 2016年 / 32卷 / 05期

关键词：

Iron redox ratio in glass; microwave heating; barium borosilicate glass; spectrophotometric method; ferrozine; 1,10-ortho-phenanthroline; PHOSPHATE-GLASSES; DOPED GLASSES; FERROUS IRON; SILICATE; SPECTRA;

D O I：

10.2116/analsci.32.571

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the present study, Fe-doped barium borosilicate glass has been melted at 1250 degrees C under microwave heating. The iron redox ratio (Fe2+/total Fe) in the glass is investigated by two spectrophotometric methods. A novel decomposition technique has been optimized to measure the ferrous oxidation state in glass. Ferrozine was chosen as a specific complexing reagent; it forms a deep violet color complex with Fe2+ and has a broad absorbance peak centered at 562 nm. 1,10-ortho-phenanthroline develops an orange color complex with Fe2+ (having an absorbance peak centered at similar to 510 nm) and has been used to determine ferrous ion in glass. Both the methods are compared and the estimated redox ratio was found to be higher in the ferrozine method. The error limit of measurement has been determined as 0.012 and 0.023 for the ferrozine and 1,10-ortho-phenanthroline methods, respectively.

引用

页码：571 / 576

页数：6