Reddy BK, Kumar JR, Reddy KJ, Sarma LS, Reddy AV. A rapid and sensitive extractive spectrophotometric determination of copper(II) in pharmaceutical and environmental samples using benzildithiosemicarbazone. Anal Sci. 2003 Mar;19(3):423–8. doi: 10.2116/analsci.19.423. PMID: 12675353.
A Rapid and Sensitive Extractive Spectrophotometric Determination of Copper(II) in Pharmaceutical and Environmental Samples Using Benzildithiosemicarbazone