Subhi Abed S, T. Hussein O. Spectrophotometric Determination of Vancomycin Hydrochloride (Batch and Flow-Injection) Using O-Nitroaniline as diazotized Chromogenic Reagent. Iraqi Journal of Science. 2023;56(4B):3025-3035. Accessed January 7, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9341