Photometric Determination of Silica in Aluminous Materials by Molybdenum Blue Reaction

1944 ◽  
Vol 16 (11) ◽  
pp. 705-707 ◽  
Author(s):  
J A. Brabson ◽  
I W. Harvey ◽  
G E. Maxwell ◽  
O A. Schaeffer
Keyword(s):  
Photometric Determination ◽  
Molybdenum Blue ◽  
Blue Reaction

Modifications of spectrophotometric methods for total phosphorus determination in meat samples

2009 ◽  
Vol 63 (1) ◽  
Author(s):  
Aneta Jastrzębska
Keyword(s):  
Total Phosphorus ◽  
Reducing Agents ◽  
Statistical Parameters ◽  
Molybdenum Blue ◽  
Spectrophotometric Methods ◽  
Hydrazine Sulphate ◽  
Meat Samples ◽  
Blue Reaction ◽  
Better Than

AbstractSpectrophotometric determination of total phosphorus in meat samples was modified using the molybdenum blue reaction with the following reducing agents: ascorbic acid (AA), hydrazine sulphate (HS), and mixture of hydroquinone and hydrazine sulphate (HHS). Proposed methods were validated by evaluation of statistical parameters such as: linearity, sensitivity, limits of detection (DL) and quantification (QL), precision, and accuracy, against the standard and malachite green (MG) modified procedures and by applying food certified materials. The values of within-day and between-days precision in meat samples for all tested reducing agents were better than 3.4 % and 4.2 %, respectively. The recoveries for CRMs analyses were between 92 % and 102.3 %. Obtained results suggest usefulness of the hydroquinone and hydrazine sulphate mixture in the determination of phosphorus ions.

Pervaporation-flow injection determination of arsenic based on hydride generation and the molybdenum blue reaction

2001 ◽  
Vol 445 (2) ◽  
pp. 229-238 ◽  
Author(s):  
Thusitha Rupasinghe ◽  
Terence J Cardwell ◽  
Robert W Cattrall ◽  
Maria D.Luque de Castro ◽  
Spas D Kolev
Keyword(s):  
Flow Injection ◽  
Hydride Generation ◽  
Molybdenum Blue ◽  
Blue Reaction

Evaluation of the Molybdovanadate Photometric Determination of Phosphorus in Mixed Feeds and Mineral Supplements

1963 ◽  
Vol 46 (5) ◽  
pp. 836-838 ◽  
Author(s):  
Paul F Parks ◽  
Dorothy E Dunn
Keyword(s):  
Photometric Determination ◽  
Molybdenum Blue ◽  
Mineral Supplements ◽  
Coefficients Of Variation ◽  
Aoac Method ◽  
Mixed Feeds

Abstract The molybdovanadate method was compared to AOAC method 22.061 and a molybdenum blue method for analysis of phosphorus in mixed feeds and mineral supplements. Six mixed feeds and four mineral supplements ranging from 0.7 to 12.5% P were each analyzed 6-9 times by each of the methods. Average coefficients of variation for the three methods over the phosphorus range studied were: AOAC, 2.74%; molybdovanadate, 3.07%; molybdenum blue, 6.93%. The molybdovanadate method was superior to the molybdenum blue method for samples containing more than 2.5% P and the reagents used in the former method were more stable. The molybdovanadate method was found to be as accurate as the AOAC method and requires less time for analysis.

scholarly journals Photometric determination of silicon in vanadium by MIBK extraction and molybdenum blue method

1970 ◽  
Vol 19 (2) ◽  
pp. 236-238 ◽  
Author(s):  
Noboru YAMAMOTO ◽  
Shigeo SOEJIMA ◽  
Masao HARADA
Keyword(s):  
Photometric Determination ◽  
Molybdenum Blue

Cerimetric Determination of Molybdenum in High Chloride Media Using Molybdenum Blue Reaction

1960 ◽  
Vol 32 (6) ◽  
pp. 635-637 ◽  
Author(s):  
C. M. Callahan ◽  
S. C. Foti ◽  
J. R. Lai
Keyword(s):  
Molybdenum Blue ◽  
Blue Reaction ◽  
High Chloride
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