Kinetic Spectrophotometric Determination of Chromium (VI) by Oxidation of Sodium Pyrogallol-5-sulphonate by Hydrogen Peroxide

2004 ◽  
Vol 135 (8) ◽  
Author(s):  
Snezana S. Mitic ◽  
Gordana Z. Miletic ◽  
Aleksandra N. Pavlovic ◽  
Snezana B. Tosic
Keyword(s):  
Hydrogen Peroxide ◽  
Spectrophotometric Determination ◽  
Chromium Vi ◽  
Kinetic Spectrophotometric

scholarly journals Kinetic spectrophotometric determination of Bi(III) based on its catalytic effect on the oxidation of phenylfluorone by hydrogen peroxide

2009 ◽  
Vol 74 (8-9) ◽  
pp. 977-984
Author(s):  
Sofija Rancic ◽  
Snezana Nikolic-Mandic
Keyword(s):  
Hydrogen Peroxide ◽  
Spectrophotometric Determination ◽  
Reaction Rate ◽  
Catalytic Effect ◽  
Limit Of Detection ◽  
Kinetic Method ◽  
Limit Of Quantification ◽  
Kinetic Spectrophotometric ◽  
Good Agreement

A new reaction was suggested and a new kinetic method was elaborated for determination of Bi(III) in solution, based on its catalytic effect on the oxidation of phenyl-fluorone (PF) by hydrogen peroxide in ammonia buffer. By application of spectrophotometric technique, a limit of quantification (LQ) of 128 ng cm-3 was reached, and the limit of detection (LD) of 37 ng cm-3 was obtained, where LQ was defined as the ratio signal: noise = 10:1 and LD was defined as signal 3:1 against the blank. The RSD value was found to be in the range 2.8-4.8 % for the investigated concentration range of Bi(III). The influence of some ions upon the reaction rate was tested. The method was confirmed by determining Bi(III) in a stomach ulcer drug ('Bicit HP', Hemofarm A.D.). The obtained results were compared to those obtained by AAS and good agreement of results was obtained.

Kinetic-spectrophotometric determination of chromium(VI) by the oxidation of pyrogallol red

The Analyst ◽  
1985 ◽  
Vol 110 (6) ◽  
pp. 719 ◽  
Author(s):  
J. Medina-Escriche ◽  
A. Sevillano-Cabeza ◽  
M. de la Guardia-Cirugeda
Keyword(s):  
Spectrophotometric Determination ◽  
Pyrogallol Red ◽  
Chromium Vi ◽  
Kinetic Spectrophotometric

Kinetic Spectrophotometric Determination of Ascorbic Acid in Pharmaceutical Samples by Oxidation of Ponceau 4R by Hydrogen Peroxide

2008 ◽  
Vol 55 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Zora M. Grahovac ◽  
Snežana S. Mitić ◽  
Todor G. Pecev ◽  
Emilija T. Pecev ◽  
Aleksandra N. Pavlović
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Spectrophotometric Determination ◽  
Pharmaceutical Samples ◽  
Ponceau 4R ◽  
Kinetic Spectrophotometric
Sign in / Sign up

Export Citation Format

Share Document