Specific Sorption of Cobalt by Soil Clays

Tiller, K. G.; Hodgson, J. F.; Peech, Michael

doi:10.1097/00010694-196306000-00004

Cited by 44 publications

(19 citation statements)

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“…Cobalt has only a low affinity to humic substances, 12 and it is adsorbed to clay minerals in soil and geological origin by specific reactions. 25 This is reflected in its extraction behaviour: 50-70 % of Co is extracted in step 2, approx. 10 % in step 1 and up to 30 % in step 3.…”

Section: Cobaltmentioning

confidence: 99%

Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area

Zeiner¹,

Cindrić²,

Ivanović³

et al. 2015

Croat. Chem. Acta

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Abstract. Interest in growing fruits and vegetables in private gardens is rising due to nowadays ecological awareness. Avoiding artificial fertilizers and plant protection products does not guarantee the absence of toxic substances, especially heavy metals in the soil and thus in the fruits harvested. Due to either geological bedrock weathering or environmental pollution, garden soils may be rich in certain potentially toxic elements. In the present study ten garden soils from central Croatia have been analysed by the BCR method for the contents and bioavailability of aluminium, cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc.The total amounts of the elements are in the concentration range as reported for agricultural soils in different geographical regions. Only two soils of the capital Zagreb have higher concentrations of pollutant metals, such as chromium, cobalt, copper, lead, manganese and zinc. Regarding nutrients, all soils have met the needs of common garden plants.

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Section: Cobaltmentioning

confidence: 99%

Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area

Zeiner¹,

Cindrić²,

Ivanović³

et al. 2015

Croat. Chem. Acta

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“…In addition, recognition of an ordered difference in adsorption affinity between metals related to their hydrolysis constants (e.g. Tiller, 1961Tiller, , 1968Grimme, 1969;Forbes et aI., 1976;Kinniburgh et aI., 1976;McKenzie, 1980) encouraged the view that hydrolysed ions in soil solutions controlled the adsorption process at low metal concentrations. This hypothesis was unacceptable to many, and still has its detractors because of the extremely low concentrations of the hydrolysed ions, but of course this low concentration could well be compensated for by a correspondingly much higher binding constant than would apply to unhydrolysed species (Naidu et aI., 1994).…”

Section: The Role Of Hydrolysed Metal Speciesmentioning

confidence: 99%

“…In summarising my and other papers available at that time, I (Tiller, 1961) suggested the relative bonding energy of some trace metals for several minerals was Cu > Zn > Co > Ni, Mn, and noted that this order approximated the hydrolysis constants of these cations and the second ionisation potentials of the ions (Pauling, 1960). In my early work the observed relative affinities of Co and Ni were sometimes anomalous; I assumed that this could be due in some soils to a highly specific interaction of Co with Mn (McKenzie, 1967) or favoured sorption sites for Ni in some Mg minerals when present (Tiller et a!., 1984b).…”

Section: The Role Of Hydrolysed Metal Speciesmentioning

confidence: 99%

Soil contamination issues: past, present and future, a personal perspective

Tiller¹

1996

Contaminants and the Soil Environment in the Australasia-Pacific Region

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“…De ce fait, on considère que seulement 5 à. 10 % du cobalt total d'un sol seraient biodisponibles (Taylor, 1968 ;Tiller et al, 1962).…”

Section: Tableau Iunclassified

Transferts du radiocobalt en milieu terrestre

1996

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Caractéristiques générales du cobaltLe cobalt, de numéro atomique Z = 27, est un élément de transition qui possède une masse atomique de 58,9. Dix isotopes radioactifs (54 à 64) et cinq isomères nucléaires sont connus. Le plus important d'entre eux, en radioécolo-gie terrestre, est le cobalt 60 (émetteur gamma, période : 5,26 ans) qui appartient au groupe 2 (radiotoxicité forte).D'un point de vue chimique le cobalt possède deux valences principales (II et III), le degré II étant le plus stable, mais il peut être monovalent dans certains composés organiques (Pascal, 1961).La concentration moyenne en cobalt de l'écorce terrestre est estimée à 23 mg kg -1 (trente-troisième élément par ordre d'abondance). Les concentrations les plus fortes sont mesurées dans les roches très riches en magnésium et les plus faibles dans les roches calcaires et les grès (Tab. I).Les teneurs en cobalt des sols sont généralement du même ordre de grandeur que celles des roches mères dont ils sont issus et varient en général de 3 à 15 mg kg-1 (Coughtrey, 1983). Comportement du cobalt dans les solsDe nombreux travaux ont eu pour objet l'étude du comportement du cobalt dans les sols, notamment à partir d'expériences d'extraction du cobalt du sol

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Specific Sorption of Cobalt by Soil Clays

Cited by 44 publications

References 0 publications

Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area

Availability of Selected (Pollutant) Elements and their Influence on Soil Composition in Urban Area

Soil contamination issues: past, present and future, a personal perspective

Transferts du radiocobalt en milieu terrestre

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