Sequential and Simultaneous Radionuclide Separation-Measurement with Flow-Cell Radiation Detection

Radionuclide Sensors for Environmental Monitoring: From Flow Injection Solid-Phase Absorptiometry to Equilibration-Based Preconcentrating Minicolumn Sensors with Radiometric Detection

“…3 Both groups now have a number of publications, sometimes jointly, on dual-functionality, preconcentrating minicolumn sensors for radionuclides. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The separation properties of extractive scintillating resins were modeled after the extraction chromatographic resins used for radiochemical separations. Scintillating properties could be obtained by co-impregnating the resins with fluor molecules.…”

“…A number of these were further investigated and tested against groundwater, synthetic groundwater samples, or nuclear waste samples. [5][6][7][12][13][14]17 For example, further studies of 99 Tc sensing were carried out using Aliquat 336 as the sorbent. 5 The fluors, PPO and bis-MSB, were diffused into the macroporous acrylic-based (Amberchrom CG-71t2) polymer beads in a separate step prior to impregnation with the extractant.…”

“…Similarly, Egorov and co-workers described impregnation of both extractant and scintillating fluors in polymer beads, and characterized the analytical performance of the material in minicolumn sensors for 99 Tc . Both groups now have a number of publications, sometimes jointly, on dual-functionality, preconcentrating minicolumn sensors for radionuclides. − …”

“…This work that has largely occurred from 1995 to the present. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] As a secondary aim, we will cover radionuclide sensors that combine sorption and scintillation in formats other than minicolumn sensors. We are particularly concerned with the detection of Rand β-emitting radionuclides in liquids, which presents particular challenges as we shall describe below.…”

“…The aim of this review is to cover radionuclide sensors for α- and β-emitting radionuclides that combine some form of selective sorption with a radiometric detection method andas a primary aimto comprehensively review preconcentrating minicolumn sensors for radionuclide detection. This work that has largely occurred from 1995 to the present. − As a secondary aim, we will cover radionuclide sensors that combine sorption and scintillation in formats other than minicolumn sensors. We are particularly concerned with the detection of α- and β-emitting radionuclides in liquids, which presents particular challenges as we shall describe below.…”