Extraction-spectrophotometric determination of mefenamic acid in pharmaceutical preparations

2014 ◽  
Vol 69 (10) ◽  
pp. 960-964 ◽  
Author(s):  
Zh. A. Kormosh ◽  
O. Yu. Matviichuk ◽  
Ya. R. Bazel’
The Analyst ◽  
1989 ◽  
Vol 114 (1) ◽  
pp. 101 ◽  
Author(s):  
Sukomal Das ◽  
Suresh C. Sharma ◽  
Santosh K. Talwar ◽  
P. D. Sethi

1997 ◽  
Vol 30 (15) ◽  
pp. 2743-2753 ◽  
Author(s):  
M. S. Rizk ◽  
Y M Issa ◽  
A F Shoukry ◽  
E M Atia

2006 ◽  
Vol 70 (3) ◽  
pp. 259-262 ◽  
Author(s):  
T SAFFAJ ◽  
M CHARROUF ◽  
A ABOURRICHE ◽  
Y ABOUD ◽  
A BENNAMARA ◽  
...  

2011 ◽  
Vol 8 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Baghdad Science Journal

A simple, accurate and sensitive spectrophotometric method for the determinaion of epinephrine is described . The method is based on the coordination of Pr (III) with epinephrine at pH 6. Absorbance of the resulting orange yellow complex is measured at 482 nm . A graph of absorbance versus concentrations shows that beer 's low is obeyed over the concentration range (1-50)mg.ml-1 of epinephrine with molar absorpitivity of ( 2.180x103 L.mol-1.cm-1 ), a sandell sensitivity of (0.084 mg.cm-2 ), a relative error of (-2.83%) , a corrolation coffecient (r= 0.9989) and recovery % ( 97.03 ± 0.75 ) depending on the concentration.This method is applied to analyse EP in several commercially available pharmaceutical preparations using direct methods .All statistical calculations are implemented via a Minitab software version 11.


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