1960
DOI: 10.2136/sssaj1960.03615995002400030013x
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Cobalt Reactions with Montmorillonite

Abstract: Specific reactions between montmorillonite and Co in low concentrations were studied in the presence of excess CaCl2. Two forms of bound Co were distinguished. One form, characterized as being slowly dissociable, appears to be bound in a monolayer by chemisorption and will exchange with Cu++, Zn++, or other Co++ and to a lesser extent with ions of other transition metals but not with Ca++, Mg++, or NH4+. A second form of Co did not dissociate and could not be extracted from the mineral with 2.5% acetic acid. T… Show more

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Cited by 62 publications
(26 citation statements)
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“…The NaOAc extraction displaces exchangeable metals on clays and weak to moderately adsorbed metals on oxides (Tessier et al, 1979). It will also dissolve carbonates although siderite is not particularly vulnerable (Hodgson, 1960;Heron et al, 1994). However, because the amount of NaOAc extractable Al was approximately 65% of that extractable by 0.5 N HCl (Fig.…”
Section: The Role and Fate Of Almentioning
confidence: 99%
“…The NaOAc extraction displaces exchangeable metals on clays and weak to moderately adsorbed metals on oxides (Tessier et al, 1979). It will also dissolve carbonates although siderite is not particularly vulnerable (Hodgson, 1960;Heron et al, 1994). However, because the amount of NaOAc extractable Al was approximately 65% of that extractable by 0.5 N HCl (Fig.…”
Section: The Role and Fate Of Almentioning
confidence: 99%
“…Estos autores diferenciaron métodos que empleaban EDTA (Hodgson, 1960), métodos que utilizaban ácidos inorgánicos (Ray el al., 1957;Hirst y Nicholls, 1958;Arrhenius y Korkish, 1959;Hodgson, 1960), métodos que empleaban agentes reductores (Arrhenius y Korkish, 1959;Chester y Hughes, 1967) y, finalmente, métodos que aplicaban conjuntamente ácidos inorgánicos y agentes reductores (Chester y Hughes, 1967).…”
Section: Evolución Históricaunclassified
“…This result confirms the chemical elements in the sediments and the finding of Arrhenius and Korkish (1959). nodules (Ray et al, 1957;Hirst and Nicholls, The combined solution of 1 M NH2OH-HCl 1958; Goldberg and Arrhenius, 1958;Arrhenius in 25 % acetic acid, however, leaches about 90% and Korkish, 1959;Hodgson, 1960; Chester and of iron oxide minerals and also nearly 100% of Hughes, 1966Hughes, , 1967Takematsu, 1972; Kitano both carbonate and manganese oxides in ferro et al., 1980;Kitano and Fujiyoshi, 1980a, manganese nodules. If only 25% CH3COOH is 1980b; Kitano et al, 1981;Tomiyama and used, the entire fraction of carbonate, excluding Kitano, 1982 (Taira et al, 1981).…”
Section: Introductionmentioning
confidence: 99%