Mohamad S, Radzi Abas M. Enrichment of Cu, Zn and Cd by Solid-Phase Extraction using Silica Gel Chemically Modified with Hydroxamic Acid Prior to Their Determination by Flame Atomic Absorption Spectrometry. Malaysian J. Sci. [Internet]. 2005 Aug. 25 [cited 2024 Dec. 23];24(2):65-70. Available from: https://ajba.um.edu.my/index.php/MJS/article/view/8330