Synthesis and Efficiency of a Spherical Macroporous Epoxy-dicyandiamide Chelate Resin for Preconcentrating and Separating Trace Au, Hg, Pd and Ru from Samples

GONG Bo-lin, LI Xue-qiang, WANG Feng-rong, CHANG Xi-jun

Chemical Research in Chinese Universities . 2001, (2): 168 -174 .