Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1997-11-20
2000-10-31
Walker, W. L.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210650, 2105021, 250364, 2504831, 436178, B01D 6100, G01T 120
Patent
active
061397490
ABSTRACT:
A method for separation, identification, and quantification of radioactive species in an environmental fluid, such as surface or ground water, by passing the fluid through a sheet article. The sheet article is an essentially homogenous, fibrous or fibrillated, matrix or membrane that includes (1) ion-specific separators that sorb or react with the targeted radioactive species and (2) scintillators which emit light in response to radioactive emissions from the targeted species. The separators can be macrocyclic ligand-containing particles. The scintillators can be particles, fibers, a coating on the particles, or a coating on the fibrous matrix or membrane. The scintillator can be an organic scintillator or an inorganic crystalline scintillator. In one embodiment both the scintillator and the separator are incorporated into the same particle or fiber. A scintillation counter can be used to detect and quantify the emitted light.
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Dallas Susan K.
Erickson Mitchell D.
Goken Garold L.
Haddad Louis C.
Hoffmann Keith M.
3M Innovative Properties Company
Bond William J.
Cecil Terry K.
Griswold Gary L.
Sprague Robert W.
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