Langmuir–Blodgett film of p-tert-butylthiacalix[4]arene modified glassy carbon electrode as voltammetric sensor for the determination of Ag+

Polyaniline Langmuir–Blodgett film modified glassy carbon electrode as a voltammetric sensor for determination of Ag+ ions

“…The semicircle portions are observed at higher frequencies, and are associated with a process that is limited by electron transfer. The linear features observed at lower frequencies are attributed to diffusion-limited electron transfer [25]. The diameter of the semicircle at high frequency increases as the number of layers in the PAn-PTSA film is increased.…”

Determination of Silver(I) by Differential Pulse Voltammetry Using a Glassy Carbon Electrode Modified with Synthesized N-(2-Aminoethyl)-4,4'-Bipyridine

“…Only a limited number of articles have been published on the use of chemically modified glassy carbon electrodes for Ag(I) determination. Some of the used modifiers are: polyaniline [ 7 ], p - tert -butylthiacalixarene [ 8 ], chitosan [ 9 ] and polypyrrole film [ 10 ].…”

Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples

“…Some important characteristics of the proposed electrode were compared with previously reported Ag(I) ion-modied electrodes based on different materials and techniques (Table 3). It can be seen that most of the modied electrodes showed a lower sensitivity and much higher detection limit, 1,[30][31][32][37][38][39][40]42 except the results reported in the previous studies. 4,5,[34][35][36]41,43 Although the spectrometric method gives a lower LOD, 4,5,40-42 a preliminary separation and pre-concentration steps are necessary due to their extremely low concentrations and matrix interferences.…”

“…It is known to be discharged into the environment from its industrial applications and this leads to the possibility of entering the eco-system which might pose a potential risk as a toxic water pollutant. 1 The most common health effects associated with prolonged exposure to the Ag(I) ion are the development of a characteristic, irreversible pigmentation of the skin (argyria) and the eyes (argyrosis). The affected area becomes bluish-gray or ash gray and most prominent in areas of the body exposed to sunlight.…”