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

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

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.

scholarly journals First Derivative Spectrophotometric Determination of Demeclocycline and Minocycline in Clinical Samples, Urine and Honey

1970 ◽  
Vol 8 (8) ◽  
pp. 34-38 ◽  
Author(s):  
A Raghavendra Guru Prasad ◽  
V Suryanarayana Rao
Keyword(s):  
Spectrophotometric Determination ◽  
Clinical Samples ◽  
Calibration Function ◽  
Linear Calibration ◽  
Ultraviolet Spectrophotometry ◽  
Zero Crossing ◽  
First Derivative ◽  
Scientific World ◽  
Linear Concentration

The authors present simple and rapid method for the first derivative spectrophotometric determination of demeclocycline (DMC) and minocycline (MNC). The linear calibration function is established in the concentration range 10 to 50 μg/ml for DMC and 10 to 60 μg/ml for MNC. The proposed method is also applied for their resolution in synthetic binary mixtures. The resolution is based on the first derivative ultraviolet spectrophotometry with zero crossing measurement. The corresponding calibration function is linear in the rage 10 to 40 μg/ml for DMC and 10 to 50 μg/ml for MNC. The proposed methods are found to be selective, linear (R > 0.99), accurate (recovery = 98 to 104%) and precise (RSD < 1.1%) in the respective linear concentration ranges. The method is successfully applied for the analysis of these drugs in clinical samples, urine and honey without pretreatment. Keywords: Demeclocycline; Minocycline; First derivative; Resolution; Applications. DOI: 10.3126/sw.v8i8.3843 Scientific World Vol.8(8) 2010 pp.34-38

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