Adsorption strength of zinc for soil humus

Matsuda, Keiichiro; Ito, Sumio

doi:10.1080/00380768.1970.10432817

Cited by 33 publications

(3 citation statements)

References 10 publications

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“…Humification of soil HAs and their stability constants for Zn have also been found to correlate positively. 22 According to the NMR spectrum, the aromaticity of the compost HA was lower than that of soil HAs from cultivated land but higher than compost FA, so a direct relationship between binding strength and aromaticity cannot be deduced from our results.…”

Section: Trace Metal Complexation Of Compost Hscontrasting

confidence: 55%

“…3,21 Since CC is a conditional value dependent on ionic strength, pH, and ligand concentration, 3 comparisons to previous investigations are only valid if these parameters are similar. As shown by Matsuda and Ito with HAs and FAs extracted from 40 different soils, 22 the complexing capacity for metals (in this case, Zn) can vary largely, depending upon their source. Nonetheless, it is apparent that our measured CC values for HA and FA from MSW compost were in the range of values for soil-derived HS reported in the literature (Table 3).…”

Section: Trace Metal Complexation Of Compost Hsmentioning

confidence: 97%

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Binding of cadmium, copper, and zinc to humic substances originating from municipal solid waste compost

Kaschl

Römheld

Chen

2002

Israel Journal of Chemistry

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The application of municipal solid waste (MSW) compost increases both the trace metal loading and the organic matter in the soil. To characterize the quality and metal-binding capacity of the compost OM, we extracted humic acid (HA) and fulvic acid (FA) from mature MSW compost and analyzed them for elemental composition, acid-titratable functional groups, total metal content, and structural components (by 13 C NMR). HA constituted 67% of all extracted humic substances and differed significantly from HAs of cultivated lands: The compost HA exhibited smaller molecular size, a higher N content, and lower aromaticity due to large amounts of saturated aliphatic components. Metal complexation studies of the extracted HA and FA were performed by equilibrium dialysis titration. The complexing capacity (CC) was highest for Cu: CC HA = 3357 and CC FA = 5221 µmol Cu g -1 of dissolved organic carbon (DOC) at pH 5. Zn and Cd were bound (at pH 7) in smaller concentrations: CC HA (Zn) = 2167, CC FA (Zn) = 2809, CC HA (Cd) = 2386, and CC FA (Cd) = 2468 µmol metal g -1 of DOC. Stability constants for binding on the strongest sites (pK int ) were determined as pK int HA = 6.6 and pK int FA = 7.3 for Cu at pH 5; and pK int HA = 8.0 and pK int FA = 6.4 for Cd at pH 7. Since these measured parameters fall within the ranges of values obtained for soil humic substances, we conclude that in soils with little organic matter, compost addition will significantly increase the amount of highly reactive organic complexing agents for trace metals in the soil.

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Section: Trace Metal Complexation Of Compost Hscontrasting

confidence: 55%

Section: Trace Metal Complexation Of Compost Hsmentioning

confidence: 97%

Binding of cadmium, copper, and zinc to humic substances originating from municipal solid waste compost

Kaschl

Römheld

Chen

2002

Israel Journal of Chemistry

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“…Soil particle size distribution was determined by the pipette method with wet sieving (sand fractions) and sedimentation (silt and clay fractions) after soil dispersion with sodium pyrophosphate. Organic matter content was determined by acid potassium-dichromate digestion after the Tjurin method [53]. The SOCS concentrations were determined for depth 0-10 cm.…”

Section: Study Areamentioning

confidence: 99%

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

et al. 2020

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In urban areas, land use usually increases soil degradation. However, there are areas occupied by agriculture and woodlands with an essential role in provisioning food and other services such as water and climate regulation. The objective of this work was to assess the effect of long-term land use and soil management practices on peri-urban soils in Zagreb (Croatia). Samples were collected at depth 0–10 cm within intensively tilled cropland (CROP) and vineyard (VINE), traditional grass-covered orchard (ORCH), and forest (FOR). The results showed that bulk density was significantly higher in VINE and CROP than in ORCH and FOR. The opposite dynamic was observed in water-holding capacity, air-filled porosity, aggregate stability, organic matter, and soil organic matter stocks (SOCS). Soil water infiltration was higher in FOR plot compared to the other plots. Overall, land-use change had a substantial impact on soil properties and SOCS, especially in CROP and VINE soils. Tillage, pesticides, and fertilizer applications were presumably the reasons for altered soil quality properties. Intensively used areas (VINE and CROPS) may reduce soil ecosystems services such as the capacity for flood retention and C sequestration.

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Interactions of Humic Substances with Trace Metals and Their Stimulatory Effects on Plant Growth

Kaschl

Chen

NATO Science Series

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Adsorption strength of zinc for soil humus

Cited by 33 publications

References 10 publications

Binding of cadmium, copper, and zinc to humic substances originating from municipal solid waste compost

Binding of cadmium, copper, and zinc to humic substances originating from municipal solid waste compost

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

Interactions of Humic Substances with Trace Metals and Their Stimulatory Effects on Plant Growth

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