Uzun, A., M. Soylak, L. Elci, and M. Dogan. 2010. “Application of Sorbent Extraction for Preconcentration Separation of Trace Amounts of Cadmium(II), Silver(I), Gold(II) and Lead(II) from Metallic Zinc Samples and Their Determinations by Atomic Absorption Spectrometry ”. Asian Journal of Chemistry 14 (3):1277-81. https://asianpubs.org/index.php/ajchem/article/view/22393.