Naslov
An Analitical Solution of Non­‐linear Equation of Chromatography and Its Application in Determination of Radioactive Strontium.

Autori
Grahek, Željko ; Coha, Ivana

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

Izvornik
Tenth International Conference on Methods and Applications of Radioanalytical Chemistry / - , 2015

Skup
Tenth International Conference on Methods and Applications of Radioanalytical Chemistry - MARC X

Mjesto i datum
Kailua-Kona (HI), Sjedinjene Američke Države, 12.04.2015. - 17.04.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Analitical solution; Chromatography; radioactive strontium; Sr resin

Sažetak
The ideal linear model of chromatography can be used for the modelling of radionuclide sensor column in so called “equilibration based pre-­‐concentration mini-column sensor analysis for the determination of low level concentration of some elements and radionuclides in water”[1]. Egorov et all. used theoretical approach typical for linear equilibrium chromatography and applied theoretical solutions for frontal analysis to modelling (predict) column-­‐detector response (column with low number of theoretical plates ‐ solutions for the breakthrough curves). This approach is reasonable because at low concentration of element and "short" column, linear sorption isotherm and low number of theoretical plates are expected. However, if sample contains higher concentration of target element, deviation from linear condition is expected. In open literature, simple analytical solution doesn’t exist for non­‐ linear isotherm in case of frontal analysis. Therefore, in this paper authors will show how an analytical solution for parabolic isotherm can be obtained by combination of Cole-Hopf and Laplace transform. This solution will be used to predict sensor column response in previously mentioned sense. Difference between linear and non­‐linear solution with emphasis on prediction of Sr binding profile on Sr specific reins (Sr resin, SuperLig) and expected column response in case of low number of theoretical plates will be discussed. The advantages and limitations of non­‐linear solution will be shown through application to determine radioactive strontium in real samples.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA