Copper Determination in Gunshot Residue by Cyclic Voltammetric and Inductive Coupled Plasma-Optical Emission SpectroscopyNurul’Afiqah Hashimah Mohd Hashim, Zainiharyati Mohd Zain and Mohd Zuli JaafarMATEC Web of Conferences, 59 (2016) 04005DOI: https://doi.org/10.1051/matecconf/20165904005