Indirect Complexometric Analysis with Aid of Liquid Amalgams

Quantitative Separation of Copper, Cadmium, and Zinc by Precipitation of Sulfides with Thioacetamide

“…These results are comparable in accuracy to analyses reported using masking reagents (29), liquid amalgams (31), or ion exchange separation (2) as a preliminary step to complexometric titration. Other separations employing hydrolysis of thioacetamide are being investigated with the hope that more sulfide chemistry may be utilized in quantitative analysis.…”

“…Finally each metal ion solution (noted I, II, III in Figure 2, Methods A and B) was adjusted to the proper pH for complexometric titration with dilute ammonia. Because of decomposition of the cadmium Eriochrome Black T color, addition of a known amount of standard magnesium chloride -was essential to obtain a sharp end point in the titration of cadmium (31).…”

Studies in Analytical Chemistry

“…This vessel, shown in Fig. 2, is a modification of that described by Scribner and Reilley (1958). By diluting the sample solution to volume before reduction, and taking an aliquot of the reduced solution, the greatest difficulty in the use of liquid amalgams, viz., quantitative separation of the two phases, is obviated.…”

Tetradecahedral Cu@Ag core–shell powder with high solid-state dewetting and oxidation resistance for low-temperature conductive paste

“…35,36 Although ammonium hydroxide is commonly used as a complexing agent for electroless Ag plating onto Cu powders (Table S1 †), 31,32,34,[37][38][39][40][41] the stability of the cuprammonium complex and Ag-ammine complex is unsatisfactory. 42,43 It is difficult to control the plating rate and stability of the plating bath, which is a major challenge for large-scale production. In addition, the preparation of Cu@Ag powders using TETA or EDTA as a single complexing agent has also been reported, but the density and smoothness of the Ag shells and the conductivity of the powders are not satisfactory, mainly because they can only regulate the Ag ion release rate in a limited range.…”