Figure 3.
Dissolution of BaSO4 by macropa, macropaquin, DTPA, and DOTA. (a) Dissolution at RT and pH 8 was initiated by the addition of chelator (5 mM) to a suspension of BaSO4 (4.53 mM Ba(NO3)2 and 13.48 mM Na2SO4). Barium content in solution was measured by GFAAS after 10, 20, and 30 min. (b) Samples from dissolution experiments after 30 min.