Fast and accurate simultaneous quantification of strontium-90 and yttrium-90 using liquid scintillation counting in conjunction with the Bateman equation

Application of Titanium Dioxide for Zirconium Ions Adsorption and Separation from a Multicomponent Mixture

“…Використання діоксиду титану для адсорбції йонів цирконію та виділення їх із багатокомпонентної суміші 1 Ужгородський національний університет, Ужгород, Україна, h.v.vasylyeva@hotmail.com 2 Прикарпатський національний університет ім. В.Стефаника, Івано-Франківськ, Україна, myrif555@gmail.com 3 Лабораторія ядерної криміналістики, Інститут ядерних досліджень, НАН, Київ, Україна, myst@kinr.kiev.ua…”

“…Vp, (cm 3 g -1 ) Vmicro (cm 3 g -1 ) Vmeso (cm 3 zirconium ions were determined using direct complexometric titration in a strongly acidic medium with Xylenol Orange as an indicator [16]. Adsorption values were calculated using (eq.1) as follows:…”

“…90 Y β-particles have higher maximum energy than βparticles of 90 Sr (2.281 MeV versus 0.546 MeV, respectively) and completely shield strontium. The amount of 90 Sr can be approximately determined based on Vavilov-Cherenkov radiation generated by yttrium βparticles [3]. Another technique of environmental 90 Sr measurement is the separation of 90 Sr from yttrium by the oxalate precipitation and subsequent determination of 90 Sr amount based on the freshly formed daughter 90 Y.…”

Rapid 90Sr quantification method based on the Bateman equation for routine laboratory work

“…Measuring the activity immediately after 90 Sr separation is considered as a last-resort strategy for emergency situations because the accuracy of such analysis is compromised. However, there are mathematical approaches that can provide accurate results before secular equilibrium is reached [7,17]. Therefore, it is not necessary to wait a long time for the equilibrium sta te.…”

“…The proposed calculation method also applies the concept of measuring the total activity and calculating the 90 Sr fraction in a modifi ed manner [17].…”