T. Perez-ruiz et al., Flow-injection extraction-spectrophotometric method for the determination of ranitidine in pharmaceutical preparations, J PHARM B, 26(4), 2001, pp. 609-615
The spectrophotometric determination of trace amounts of ranitidine was car
ried out by liquid-liquid extraction using bromothymol blue with a flow sys
tem. The determination of ranitidine in the range of 1 x 10(-5)-1 x 10(-4)
mol l(-1) was possible with a sampling frequency of 40 samples h(-1), The m
ethod was satisfactorily applied to the determination of ranitidine in phar
maceutical preparations and the recovery was quantitative and no interferen
ces from excipients were observed. (C) 2001 Elsevier Science B.V. All right
s reserved.