Application of silver/sulfide ion-selective electrode for the determination of aliphatic primary and secondary amines |
| |
| Authors: | Mohamed Tarek Mohamed Zaki Mohamed Hossam Fawzy Mohamed Mokhtar Assey |
| |
| Institution: | (1) Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt;(2) Present address: Department of Chemistry, Faculty of Science, Azhar University, Assiut, Egypt |
| |
| Abstract: | Aliphatic primary and secondary amines were determined utilizing their reaction with carbon disulfide. A potentiometric titration of the formed dithiocarbamates (I) with silver nitrate using a silver/sulfide ion-selective electrode was carried out. The effects of solvent, base, temperature and reaction time were investigated. The optimum conditions for a quantitative formation of (I) requires a minimal amount of 1,4-dioxane, 2 drops of 0.2% sodium hydroxide solution, excess carbon disulfide to stand at room temperature for 15 min. The titration requires prior evaporation of the unreacted carbon disulfide at 46 ° C. An average recovery of 98.5% with a standard deviation of 0.69 was obtained for the analyzed amines. |
| |
| Keywords: | amines determination silver/sulfide electrode |
| 本文献已被 SpringerLink 等数据库收录！ |
|
