|
|
Thick-film amperometric sensor array
Růžička, Tomáš ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
Supposed work deals with proposal and construction of thick-film amperometric sensor array. The reason of this proposal of sensor array is multiple increase of speed, increase of accuracy and enlargement of possibilities of measuring against current optical system. In theoretic part there is described method of seriography and electrochemical analytic method for determination of chemical elements in the solution. Practical part is composed of proposal of topology of electrochemical sensor electrodes, their comparison according to characteristics and subsequently of the proposal of sensor array. For testing of function of sensor array measuring by method of cyclical voltametry was done with the help of default electrochemical oxidative-reducing pair of potassium ferro-ferricyanide.
|
|
|
Cobalt phthalocyanines as sensors for detection of htiol groups
Vaňková, Kateřina ; Nesměrák, Karel (advisor) ; Schwarzová, Karolina (referee)
Title: Cobalt phthalocyanines as sensors for determination of thiol groups Annotation: The possibility of employment of cobalt phthalocyanine as a material for the modification of HOPG electrode for construction of a sensor for quantification of thiol groups was studied. Thiol groups are occurring in various biologically active substances (sulfur amino acids). The electrochemical behavior of cobalt tetraneopentoxy-phthalocyanine (CoTNPc) in the water/organic phase system was studied, and individual peaks of cyclic voltammogram of the compound were identified. The electrodeposition of CoTNPc on HOPG electrode was found as a suitable method for construction of the sensor for quantification of thiol groups. The reproducibility of fabrication of the sensor and its time-stability was studied. The calibration dependencies for model analytes (cysteine hydrochloride and homocysteine) were measured. Key words: thiols, phthalocyanines, amperometric sensor, cyclic voltammetry
|
|
|
Cobalt phthalocyanines as sensors for detection of htiol groups
Vaňková, Kateřina ; Nesměrák, Karel (advisor) ; Schwarzová, Karolina (referee)
Title: Cobalt phthalocyanines as sensors for determination of thiol groups Annotation: The possibility of employment of cobalt phthalocyanine as a material for the modification of HOPG electrode for construction of a sensor for quantification of thiol groups was studied. Thiol groups are occurring in various biologically active substances (sulfur amino acids). The electrochemical behavior of cobalt tetraneopentoxy-phthalocyanine (CoTNPc) in the water/organic phase system was studied, and individual peaks of cyclic voltammogram of the compound were identified. The electrodeposition of CoTNPc on HOPG electrode was found as a suitable method for construction of the sensor for quantification of thiol groups. The reproducibility of fabrication of the sensor and its time-stability was studied. The calibration dependencies for model analytes (cysteine hydrochloride and homocysteine) were measured. Key words: thiols, phthalocyanines, amperometric sensor, cyclic voltammetry
|
|
|
Thick-film amperometric sensor array
Růžička, Tomáš ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
Supposed work deals with proposal and construction of thick-film amperometric sensor array. The reason of this proposal of sensor array is multiple increase of speed, increase of accuracy and enlargement of possibilities of measuring against current optical system. In theoretic part there is described method of seriography and electrochemical analytic method for determination of chemical elements in the solution. Practical part is composed of proposal of topology of electrochemical sensor electrodes, their comparison according to characteristics and subsequently of the proposal of sensor array. For testing of function of sensor array measuring by method of cyclical voltametry was done with the help of default electrochemical oxidative-reducing pair of potassium ferro-ferricyanide.
|
guest ::
