Determination of Maximum Complexing Ability of Water-Soluble Complexants

Zunino, Hugo Marcelo; Peirano, P.; Aguilera, M.; Escobar, Isabel C.

doi:10.1097/00010694-197212000-00002

Cited by 14 publications

(7 citation statements)

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“…[10] Evidently, fulvic and humic acids are found in soil as a part of mixed clay -humus colloids and not as a colloidal solution. Thus, an effect might result from the agronomic use or management to which these soils have been subjected.…”

Section: Soil Organic Matter -Metal Interactions 2091mentioning

confidence: 99%

Soil organic matter–metal interactions in Chilean volcanic soils under different agronomic management

Heredia

Peirano

Borie

et al. 2002

Communications in Soil Science and Plant Analysis

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The organic matter existing in volcanic soils must be investigated not only in quantity, but also in quality in order to understand its role in soils and thus ensure adequate levels of stable organic polymers contributing to soil humification.The meaningful contribution proposed by this investigation is based on the study of the interaction of soil organic matter (SOM) in its fractions humic acid and fulvic acid with metallic elements that are macro-and micronutrients and also contaminants. The study was carried out in Chilean soils of the type Andisols and Ultisols. To this end, humic acids and fulvic acids were fractionated to determine phenolic, carboxylic and total acidity. 2083

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Section: Soil Organic Matter -Metal Interactions 2091mentioning

confidence: 99%

Soil organic matter–metal interactions in Chilean volcanic soils under different agronomic management

Heredia

Peirano

Borie

et al. 2002

Communications in Soil Science and Plant Analysis

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“…Approaches used to determine the binding capacities of humic substances for metal ions include coagulation (105), proton release (129,130,145), metal ion retention as determined by competition with a cation-exchange resin (42,159), dialysis (160), anodic stripping voltammetry (60, 100), and ion-selective electrode measurements (26,29). The maximum amount of any given metal ion that can be bound has been found to be approximately equal to the content of COOH groups.…”

Section: Metal Ion Binding Capacitymentioning

confidence: 99%

Soil organic matter interactions with trace elements

Chen¹,

Stevenson²

1986

The Role of Organic Matter in Modern Agriculture

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“…The methods of Zunino et al [5,6], using a cation exchange resin, were found to be suitable for determining some characteristics of the complexes formed [7], when solutions of metal are titrated with OMW solutions or vice versa, but such methods are strongly model-dependent and, moreover, cannot be used for a direct distinction of complexed and uncomplexed metal released from a soil or sediment in contact with OMW.…”

Section: Introductionmentioning

confidence: 99%

Use of C-18 reverse-phase cartridges for estimation of metal complexation by a residue from olive oil industry

Dı́az-Barrientos¹,

Bejarano²,

Madrid³

1997

Fresenius' Journal of Analytical Chemistry

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Formation of complexes between Cu and organic polymers present in olive mill wastewater (OMW) is shown to be a cause of metal solubilization by the residue, using C-18 reverse-phase cartridges (RPC) for separating the complexed metal. Nearly 100% of the metal released from a polluted river sediment by OMW solutions is retained by the cartridges. The proportion of Cu retained by the cartridges is somewhat lower (50-80%), if the OMW solution initially contains Cu. About 70-80% of Cu released by OMW from a soil column previously loaded with high doses of metal is also retained by the cartridges. Incomplete Cu retentions are not thought to be due to a lack of efficiency of RPC in immobilizing Cu complexes, but to the formation of an equilibrium between free and complexed forms of the metal.

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Determination of Maximum Complexing Ability of Water-Soluble Complexants

Cited by 14 publications

References 0 publications

Soil organic matter–metal interactions in Chilean volcanic soils under different agronomic management

Soil organic matter–metal interactions in Chilean volcanic soils under different agronomic management

Soil organic matter interactions with trace elements

Use of C-18 reverse-phase cartridges for estimation of metal complexation by a residue from olive oil industry

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