Microdetermination of Methenamine in the Presence of Formaldehyde by Solid Phase Spectrophotometry
Figure 2
The decreases of absorbance of BCG in the Sephadex LH-20 phase in the presence of of MT (1-mm cell, similarly packed with Sephadex LH-20 equilibrated with water as reference). [BCG] = 10−4 M; 70 mg Sephadex LH-20; from up to down [MT] = 0.0 and 1.26 μg mL−1.
