A chelate-forming resin bearing mercapto and azo groups and its application to the recovery of mercury(II).
A new chelate-forming resin bearing mercapto and azo groups was prepared from a common anion-exchange resin by treatment with azothiopyrine disulphonic acid (ATPS). ATPS resin was very stable and highly effective for the collection of mercury(II) by the batch and column methods. In the column method, the amount of mercury(II) in solution could be reduced to below 0.5 mug/l. The mercury(II) adsorbed could be eluted with thiourea solution, and the resin could be used repeatedly.
Nakayama
M
M
Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan.
Chikuma
M
M
Tanaka
H
H
Tanaka
T
T