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Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   MARCH 2011 , Volume 8 , Number 1; Page(s) 90 To 99.
 
Paper: 

CONTINUOUS WAVELET TRANSFORMS FOR SIMULTANEOUS SPECTRAL DETERMINATION OF TRIMETHOPRIM AND SULPHAMETHOXAZOLE IN TABLETS

 
 
Author(s):  DINC E.*, KADIOGLU Y., DEMIRKAYA F., BALEANU D.
 
* DEPARTMENT OF ANALYTICAL CHEMISTRY, FACULTY OF PHARMACY, ANKARA UNIVERSITY, 0610 TANDOGAN, ANKARA, TURKEY
 
Abstract: 

A new signal processing approach was developed to improve the simultaneous spectrophotometric determination of trimethoprim (TMP) and sulphamethoxazole (SMX) in their binary mixtures without using any chemical pre-treatment. This approach was essentially based on the continuous wavelet transform (CWT) of the absorption spectra of the target compounds and their samples. A set of continuous wavelet transforms was applied. Biorthogonal with 2.4 order (BIOR2.4), Coiflets with 2 order (COIF2), Daubechies with 3 order (DB3) and Haar (HAAR) were found to be suitable for the quantitative resolution of the twocomponent mixture containing TMP and SMX compounds. The confirmation of the determination results obtained by applying the BIOR2.4, COIF2, DB3 and HAAR wavelet families was achieved by first derivative spectrophotometry (DS1) analysis of the same mixtures. The validation of the above-mentioned signal processing methods was tested by analyzing various binary mixtures of the related compounds, and by using the standard addition technique. The simultaneous determination of TMP and SMX in commercial tablets was assessed by using the proposed signal processing tools.

 
Keyword(s): CONTINUOUS WAVELET TRANSFORMS, BINARY MIXTURE, TRIMETHOPRIM, SULPHAMETHOXAZOLE, TABLETS
 
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