Shen T C, Fong M M
SETI Institute, NASA, Ames Research Center, Moffett Field, California 94035-1000,USA.
J Chromatogr Sci. 1994 Jan;32(1):36-40. doi: 10.1093/chromsci/32.1.36.
Studies of divinylbenzene copolymers and dimethacrylate homopolymers indicate that the polymer pore size controls the separation of water and ammonia on porous-layer-open-tubular (PLOT) columns. To a lesser degree, the polarity of the polymers also affects the separation of a water-ammonia gas mixture. Our results demonstrate that the pore size can be regulated by controlling the cross-linking density or the chain length between the cross-linking functional groups. An optimum pore size will provide the best separation of water and ammonia.
