A Localized Surface Plasmon Resonance Sensing Method for Simultaneous Determination of Atenolol and Amiloride in Pharmaceutical Dosage Forms and Urine Samples

Figure 3

(A) UV-visible spectra of 1 × 10⁻⁴ mol·L⁻¹ ATN, (B) 5 × 10⁻⁶ mol·L⁻¹ AML, and (C) ATN and AML mixture in absence and (D) in presence of 100 µL SH NPs and 50 mmol·L⁻¹ KNO₃. (The spectra were shifted vertically for clarification.)