Use of methyliminodiacetic acid bound to cellulose for preconcentration and determination of trace-metal cations.
Methyliminodiacetic acid immobilized on a cellulose support can be conveniently utilized for trace-metal uptake. Capacities and uptake yields as a function of pH have been evaluated for Pb(II), Cu(II), Mg(II), Ca(II), Cd(II), Zn(II), Co(II), Ni(II) and Hg(II) and the results compared with those predicted from the stability constants for the same systems in homogeneous solution. The immobilization of the ligand increases its co-ordinating ability. The applicability to speciation studies is considered.
Gennaro
M C
MC
Dipartimento di Chimica Analitica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy.
Sarzanini
C
C
Mentasti
E
E
Baiocchi
C
C