Ali Taher, M., Mostafavi, A., & Rohani, T. (2010). Atomic Absorption Spectrometric Determination of Trace Amounts of Copper in Natural Waters and Standard Biological Samples after Separation and Preconcentration onto Amberlite XAD-2 Loaded with 2-(5-Bromo-2-Pyridylazo)-5-Diethylaminophenol. Asian Journal of Chemistry, 15(3), 1331–1338. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/21809