CHAPTER 9 . Binding Ability of Inorganic Major Components of Sea Water
245
Fig. 9.12. Speciation diagrams
for p~-, P20~- and P30io, by
considering the formation of
complexes with B1. 1l7 +, in SSWE,
S = 35 and t = 25°C. Species:
1. H2L; 2. HL; 3. BH2L; 4. BHL;
S.BL
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ample of speciation for this class of trace components, we considered the divalent cations Mn2+, Fe 2 +, Co2+, Ni 2 +, Cu 2 +, Zn 2 +, Cd 2 +. In some cases, this group of cations is
very homogeneous, but in general its speciation profiles display significant differences.
Using the formation constants obtained for the cr and SO~- complexes of divalent
cation under examination, it is quite simple to obtain formation constants for A 1.117complexes, as reported in Table 9.15. For Mn2+, Fe 2 +, Co 2 +, Ni2+, Cu 2 + and Zn 2 +, stabil-