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A novel and highly sensitive flow injection method was developed for the determination of Mebeverine. The method is based on the formation of an ion pair compound between Mebeverine hydrochloride and calcium hexacyanoferrate in an ammonium chloride medium, resulting in the formation of a whitish-yellow precipitate complex. The analysis was performed using a homemade NAG-4SX3-3D triple flow cell CFIA Analyzer. The experimental parameters were studied to optimize both the chemical and physical aspects of the method. The linear working range was obtained to be 0.01-40 mM, with an impressive correlation coefficient (r) of 0.9907. The limit of detection (LOD) was determined to be 0.349 µg/150 µl, and the repeatability of the method (RSD%) was demonstrated to be less than 1.5%. To further evaluate the performance of the newly proposed method, a comparison was conducted using the standard addition method in conjunction with a classical method. Overall, the developed flow injection method offers simplicity, sensitivity, and reliable analytical performance for the determination of Mebeverine, making it a promising alternative to the classical method. [ABSTRACT FROM AUTHOR]

A method is described for the determination of paracetamol(based on the formation of a orange-reddish color species by reduction of Fe(III) to Fe(II) by paracetamol and then reacted with 1,10-phenanthroline) in the range 0.001-0.09mMol.L-1 (r =0.9801, r2 = 0.9606, and R2 % = 96.06) with a detection limit (LOD) 21.77ng/160µL(3SB)(S/N=3) and with RSD% for 0.01 and 0.07mMol.L-1 less than 1 % (n=6). The method was applied successfully for determination of paracetamol in pharmaceuticals formulation. Analysis of drugs used the standard additions method via the individual t-test. The results showed a significant., difference between the quoted.. value of each company. with calculated t-test at 95% confidence(α=0.05) from new method. [ABSTRACT FROM AUTHOR]