Online Flow‐Based Spectrophotometric Determination of Ferrous Iron Mass Fraction and Total Iron Mass Fraction in Twenty‐Seven Rock Reference Materials Using a Schlenk line Technique

2020 ◽  
Vol 44 (4) ◽  
pp. 785-804
Author(s):  
Ding‐Shuai Xue ◽  
Ben‐Xun Su ◽  
Yan‐Hong Liu ◽  
Dan‐Ping Zhang ◽  
Qian Guo ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Reference Materials ◽  
Ferrous Iron ◽  
Mass Fraction ◽  
Total Iron

scholarly journals Improved Spectrophotometric Determination of Total Iron and Iron(III) with o-Hydroxyhydroquinonephthalein and Their Characterization

2011 ◽  
Vol 131 (7) ◽  
pp. 1095-1101 ◽  
Author(s):  
Mitsuru HOSHINO ◽  
Hiroyuki YASUI ◽  
Hiromu SAKURAI ◽  
Takako YAMAGUCHI ◽  
Yoshikazu FUJITA
Keyword(s):  
Spectrophotometric Determination ◽  
Total Iron

Precision spectrophotometric determination of total iron in chromite ores

The Analyst ◽  
1980 ◽  
Vol 105 (1249) ◽  
pp. 333 ◽  
Author(s):  
D. Thorburn Burns ◽  
M. E. M. Abdel Aziz
Keyword(s):  
Spectrophotometric Determination ◽  
Total Iron

scholarly journals Spectrophotometric Determination of Total Iron in Rice and Maize Samples

2013 ◽  
Vol 11 (11) ◽  
pp. 101-104 ◽  
Author(s):  
Armila Rajbhandari ◽  
Tara Subedi
Keyword(s):  
Spectrophotometric Determination ◽  
Total Iron ◽  
Scientific World

Scientific World, Vol. 11, No. 11, July 2013, page 101-104 DOI: http://dx.doi.org/10.3126/sw.v11i11.8562

Collaborative Study of a Spectrophotometric Determination of Ferric, Ferrous, and Total Iron in Drugs by Reaction with α,α′-Dipyridyl

1977 ◽  
Vol 60 (6) ◽  
pp. 1350-1354
Author(s):  
Daniel J Sullivan
Keyword(s):  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Coefficient Of Variation ◽  
Collaborative Study ◽  
Total Iron ◽  
Average Recovery ◽  
Average Coefficient ◽  
Iron Preparation ◽  
Colorimetric Reagent

Abstract A spectrophotometric method for determining Fe2+, Fe3+, and total Fe in drugs has been developed, using α, α′-dipyridyl as the colorimetric reagent. The method is applicable to tablets, elixirs, injectables, and bulk powders. Eight collaborators analyzed a synthetic iron preparation and 7 commercial samples. For the synthetic iron preparation, the average recovery was 100.3% and the coefficient of variation was 1.02%. For 7 commercial samples, the average coefficient of variation was 1.44%. The method has been adopted as official first action.

A scheme of semi-micro analysis for the major elements in clay minerals, based on modifications to conventional methods of silicate analysis

Clay Minerals ◽  
1969 ◽  
Vol 8 (1) ◽  
pp. 1-13 ◽  
Author(s):  
G. Pruden ◽  
H. G. C. King
Keyword(s):  
Clay Minerals ◽  
Ferrous Iron ◽  
Major Elements ◽  
Total Iron ◽  
Total Water ◽  
Calcium Magnesium ◽  
Micro Analysis ◽  
Sodium And Potassium ◽  
Colorimetric Methods

A scheme is presented for the semi-micro analysis for the major elements in clay minerals, based mainly on improvements to conventional colorimetric methods. Silica and alumina are determined after fusing a 50-mg sample with sodium hydroxide. Titanium, total iron, calcium, magnesium, phosphorus and manganese are determined colorimetrically on a hydrofluoric-sulphuric acid digest of a 50-mg sample; sodium and potassium are determined flame photometrically on the same digest. Ferrous iron is determined separately. Additional methods for the determination of total water, total sulphur and fluorine are indicated.

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