Determination of Se(IV) concentration via cathodic stripping voltammetry in the presence of Cu(II) ions and ammonium diethyl dithiophosphate

Materials interacting with inorganic selenium from the perspective of electrochemical sensing

“…Even higher sensitivity was achieved by adding copper ions and ammonium pyrrolidine dithiocarbamate, which forms a complex with both Se and Cu. This method provided a detection limit of 65 ng L -1 ref 62 . The CunSen complex is also formed after the electrochemical deposition on a Cu surface, but it was reported that it is more stable than Ag2Se and AuSe, therefore more negative potential is needed for the consequent reduction 63 .…”

New Strategies for the Simple and Sensitive Voltammetric Direct Quantification of Se(IV) in Environmental Waters Employing Bismuth Film Modified Glassy Carbon Electrode and Amberlite Resin

“…The stripping voltammetry method makes possible the direct determination of Se(IV), while Se(VI), as electrochemically inactive, is usually reduced to Se(IV) before analysis. Among voltammetric techniques, cathodic stripping voltammetry (CSV) [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ] and anodic stripping voltammetry (ASV) [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ] have commonly been used for selenium determination. According to our knowledge, currently, there are only few papers with regard to selenium detection procedures by adsorptive stripping voltammetry (AdSV) [ 39 , 40 , 41 , 42 , 43 , 44 ] available in the literature.…”

“…Therefore, mercury electrodes were also commonly used in voltammetric procedures for selenium determination, but due to the toxicity of mercury, over the years, electrodes made of mercury have been gradually replaced by other more environmentally friendly electrodes. Mercury electrodes, such as the hanging mercury drop electrode [ 4 , 5 , 6 , 7 , 9 , 10 , 11 , 12 , 13 , 14 , 17 , 18 , 22 , 23 ], mercury film electrode [ 8 ], hanging copper amalgam drop electrode [ 15 ], and cyclic renewable mercury film silver-based electrode [ 16 ], were widely used for the determination of selenium by cathodic stripping voltammetry. The use of solid electrodes made of Ag [ 19 , 20 ] and Cu [ 21 ] was also studied.…”