Naslov
Separation of alkali metal cations by microchip electrophoresis

Autori
Horvat, Marija ; Galović, Olivera ; Sak-Bosnar, Milan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
23rd Croatian meeting of chemists and chemical engineers / Hadžiev, Andrea ; Blažeković, Zdenko - , 2013

ISBN
978-953-6894-50-5

Skup
23rd Croatian meeting of chemists and chemical engineers

Mjesto i datum
Osijek, Hrvatska, 21.04.2013. - 24.04.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
alkali metal cations ; microchip electrophoresis

Sažetak
Capillary electrophoresis (CE) is a very efficient separation technics for quantitation of different inorganic and organic compounds. It can be miniaturised on a microchip (Microchip Capillary Electrophoresis, MCE). The compounds of interest were separated from the other species of a complex system by migration in a channel incorporated in a microchip by means of a strong electric field using various detection systems for identification and quantification. Alkali and alkaline earth metals are routinely monitored in a variety of aqueous samples that are important to several industries such as the drinking and waste water industries, pharmaceutical companies, and metal plating industries. Besides other methods, Capillary Electrophoresis (CE) has also been shown to be a viable option for the analysis of free metals in solution. CE is a simple, high resolution technique that separates charged species based on their relative mobilities under the influence of an applied electric field. In this investigations MCE device of the own construction was successfully applied for separation of several alkaline metal cations, individually and in mixture. The influence of the following parameters on the separation ability was investigated: injection voltage, injection time, separation voltage, separation time. The background electrolyte and buffer composition were thoroughly studied in order to optimize the separation. The data obtained were calculated by measuring the peak area and peak height for each concentration. The linear response region for each particular cation investigated, both single and in a mixture, was determined using linear regression. A capacitively coupled contactless conductivity detection (C4D) was used for detection of the cations mentioned. The method was applied for determination of alkaline cations in water and mineral water.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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