14CO2 is a radioactive byproduct of numerous clinical exams and enzymatic assays. Traditional methods for capturing and quantifying 14CO2 produce a large quantity of radioactive liquid organic waste, which is both difficult and expensive to handle. A polymeric membrane which can simultaneously capture and quantify 14CO2 has been developed to circumvent both problems. The membrane contains a quaternary amine trapping agent (HyamineTM) and an organic fluor for β- detection. A 12% (w/v) polysulfone/sulfonated polysulfone blend membrane containing 0.5 mmol of HyamineTM captured 4.0 × 10-5 mmol/cm2 of 14CO2 with a counting efficiency of 70%. The membrane retained all of the 14CO2 for at least a three-day period.
|Number of pages||6|
|Journal||Journal of Membrane Science|
|State||Published - Jan 31 1995|
Copyright 2014 Elsevier B.V., All rights reserved.
- Affinity membranes
- Microporous and porous membranes
ASJC Scopus subject areas
- Materials Science (all)
- Physical and Theoretical Chemistry
- Filtration and Separation