Journal of Bioanalysis & Biomedicine

Saeeda Nadir Ali

Publications

• Research Article
  Synthesis and Spectrophotometric Determination Ibuprofen Charge Transfer Complexes with P-Chloranil, 7,7,8,8-Tetracyanoquinodimethane, Bromothymol Blue, Methyl Orange and Picric Acid
  Author(s): Najma Sultana, Saeed Arayne M and Saeeda Nadir AliNajma Sultana, Saeed Arayne M and Saeeda Nadir Ali
  
  Three simple, sensitive and inexpensive spectrophotometric methods have been described for the assay of ibuprofen in bulk drugs and pharmaceutical formulations. The developed methods are based on the formation of colored charge transfer complexes of ibuprofen with p-chloranil, 7,7,8,8-tetracyanoquinodimethane, bromothymol blue, methyl orange and picric acid in acetonitrile as solvent. These newly formed complexes were found to absorb at 438, 394, 403, 418, 374 nm respectively. Optimizations of various experimental conditions are described. Beer’s law obeyed in the concentration range6-54, 2-24, 4-28, 3-21 and 4-28 μgmL-1 with correlation coefficient >0.998 in each case and lower limit of detection values were 76, 90, 234, 63 and 189 ng mL-1, respectively. The association constants and standard free energy changes were studied using Benesi-Hildebrand plots. Oscillator&rsquo.. Read More»
  DOI: 10.4172/1948-593X.1000092

  Abstract PDF