DETECTION OF METAL ION HYDROLYSIS BY COAGULATION. III.¹ ALUMINUM²

Cluster Morphology of Protein-Coated Polymer Colloids

“…Thus, W decreases with the increasing of electrolyte concentration. The electrolyte concentration at which the energy barrier disappears, i.e., V T ϭ 0 and dV T /dH ϭ 0, is known as critical coagulation concentration (ccc) (45).…”

Pedogenetic acidification process of forest soils in Northern Kyoto

“…3 and 4. Although the Al(OH)zs ~ species were often considered to be a product of the hydrolytic reactions in this pH range (Matijevic et al 1961;Yoshida 1979), it was difficult to determine whether subsequent polymerization of AI(OH)2 + (Eq. 5) occurred in this titration, since the experimental conditions in the determination of the exchange (in 1 mol L -1 KCI solution) and titratable acidity (in 0.1 tool L -t NaCI solution) were different.…”

Ionic Factors Affecting Aluminum Transformations and the Impact on Soil and Environmental Sciences

“…Hydrolysis of AI(H 2 0)63+ ion can proceed through monomeric mechanism (Schofield and Taylor, 1954;Ragland and Coleman, 1960;Frink and Peech, 1963;Hunt, 1963;Frink and Sawhney, 1967;Singh, 1969;Baes and Mesmer, 1976;Stol et aI., 1976) and polymeric mechanism (Brosset et al, 1954;Sillen, 1959;Hsu and Rich, 1960;Matijevic et al, 1961;Okura et al, 1962;Jackson, 1963a;Hsu and Bates, 1964b;Aveston, 1965;Fripiat et al, 1965;Hem and Roberson, 1967;Turner, 1969;Turner and Ross, 1970;Smith and Hem, 1972;Baes and Mesmer, 1976;Stol et al, 1976;Hsu, 1977). Monomeric Al ions are not the only Al species, and polymeric Al ions are important hydrolytic products in soil solutions and natural waters.…”

“…Using ultracentrifugation, Aveston (1965) derived average degrees of polymerization (Nw) as a function of n and concluded that the [A16(OHh5]3+ species (Brosset et al, 1954) did not fit the data and the octameric [AI 8 (OH)2o]4+ species (Matijevic et al, 1961) was unlikely. He interpreted his results in terms of the species AI2(OHh 4+ and AI\304(OHh/+.…”