Also, these asymmetric systems allow for simultaneous selective removal of both positive and negative toxic ions at the same time, as the team demonstrated with the herbicides paraquat and quinchlorac. (sciencedaily.com)
Further cooling is done by evaporative cooling, by selective removal of the most energetic atoms from the system. (scientificamerican.com)
«Improving Stability of Zeolites in Aqueous Phase via Selective Removal of Structural Defects.» (pnnl.gov)