Li J-M, Zhai Q-Z, Li Y-L. Study of Chromogenic Reaction of p-Acetylchlorophosphonazo with Lead(II). ajc [Internet]. 2012 Aug. 16 [cited 2024 Nov. 22];25(1):567-9. Available from: https://asianpubs.org/index.php/ajchem/article/view/25_1_118