Ligand displacement, headspace single-drop microextraction, and capillary electrophoresis for the determination of weak acid dissociable cyanide

A new method involving ligand displacement, headspace single-drop microextraction (SDME) with in-drop derivatization and capillary electrophoresis (CE) was developed for the determination of weak acid dissociable (WAD) cyanide. WAD metal–cyanide complexes (Ag(CN)2−, Cd(CN)42−, Cu(CN)32−, Hg(CN)2, Hg(CN)42−, Ni(CN)42− and Zn(CN)42−) are decomposed with ligand-displacing reagent and the released hydrogen cyanide is extracted from neutral solution...