Determination of Sulfamethoxazole in Pure and Pharmaceutical Samples by Using Direct Method for Calibration Curve of Normal Spectrum of UV-Spectrophotometry

Abstract

Normal spectra for sulfamethoxazolesolutions were developed and used for the determination of sulfamethoxazole (SMX) antibiotic by using zero-crossing technique and simultaneously determining (SMX) at wavelength 259.00 nm. The correlation coefficient of the calibration curve for the normalspectrum was 0.9990. Linearity was maintained by using concentrations (0.990104M, 0.996104M, 0.999104M, 1.004104M, 1.005104M) and the percentage recovery of sulfamethoxazolesamples were (99.00%, 99.60%, 99.90 %, 100.40 % and 100.50 %). A statistical analysis confirmed, a precision with accuracy for simultaneous fixing of (SMX). In addition, a British pharmacopoeia method was compared with the method used in this paper using F test.