Figure 3From: Validated spectrophotometric methods for determination of Alendronate sodium in tablets through nucleophilic aromatic substitution reactionsEffect of the pH of 0.2 M borate buffer on the reaction of: ■ ALD (15 μg/mL) with NBD-Cl, ▲ ALD (40 μg/mL) with DNFB (method II), ● ALD (15 μg/mL) with DNFB (method III).Back to article page