Fraktionen und löslichkeit der schwermetalle Cd, Co, Cr, Cu, Ni und Pb im Boden

Fassbender, H. W.; Seekamp, G.

doi:10.1016/0016-7061(76)90092-6

Cited by 19 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, cobalt adsorption by the iron oxides was very closely related to, and could be calculated from the contents of two iron oxides fractions, a highly reactive fraction (previously called amorphous) extractable with EDTA and a less reactive fraction (previously called crystalline) extractable with dithionite-EDTA (9,10). However, that investigation (9) was carried out using an initially 0.85 mM cobalt solution, a concentration far above those found in natural soil solutions (8,11).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of cobalt by soil iron oxides at low solution concentration

Borggaard

1988

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

Eleven selected soils from Denmark and Tanzania were treated with ammonium acetate (controls), EDTA, and dithionite-EDTA (DE) to fractionate iron and (manganese) oxides. The amounts of cobalt adsorbed were determined from a 3 μM equilibrium cobalt solution, corresponding to the cobalt level in natural soil solutions using sodium nitrate (0.2 M) to suppress non-specific adsorption, by the extracted soils as well as by two synthetic iron oxides. No significant correlations were found between cobalt adsorption and the contents of organic matter and extractable manganese, presumably due to their low contents in the soils investigated. Close correlations

show abstract

Section: Introductionmentioning

confidence: 99%

“…Therefore, the amounts of cobalt adsorbed from 3 liM equilibrium cobalt solution, which is close to the average cobalt concentration in soil solutions (11), were determined. The adsorbents used were pretreated, contrasting soils from Denmark and Tanzania and two synthetic iron oxides.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of cobalt by soil iron oxides at low solution concentration

Borggaard

1988

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

show abstract

“…It has been shown that the concentration of cobalt (Co) in the soil solution is most likely to be controlled by sorption4esorption reactions (Fassbender & Seekamp, 1976). Cobalt is known to be sorbed by clay minerals (Tiller et al, 1963), organic materials (McCarthy & O'Cinneide, 1974;Kerndorff & Schnitzer, 1980) and iron (Fe) and manganese (Mn) oxides (McKenzie, 1967;Loganthan et al, 1977;Forbes et al.…”

Section: Introductionmentioning

confidence: 99%

“…Experiments were conducted, where possible, at solution Co concentrations equivalent to those found in natural soil solutions, which according to the limited data available, are usually less than 0. I pg Co cmand often below 0.0 1 pg Co cm - (Hodgson et a[., 1965;Bradford et af., 1971;Yamasaki et al, 1975;Fassbender & Seekamp, 1976). Sorption of Co was determined against a background of weak electrolyte solution (CaCI,) in an attempt to simulate natural soil solutions taken for radioactivity measurement.…”

Section: Introductionmentioning

confidence: 99%

Sorption and desorption of cobalt by soils and soil components

McLaren

Lawson

Swift

1986

Journal of Soil Science

View full text Add to dashboard Cite

The sorption of Co by individual soil components was studied at solution Co concentrations that were within the range found in natural soil solutions. Soil-derived oxide materials sorbed by far the greatest amounts of Co although substantial amounts were also sorbed by organic materials (humic and fulvic acids). Clay minerals and non-pedogenic iron and manganese oxides sorbed relatively little Co. It is considered that clay minerals are unlikely to have a significant influence on the sorption of Co by whole soils.Cobalt sorbed by soil oxide material was not readily desorbed back into solution and, in addition, rapidly became non-isotopically exchangeable with solution Co. In contrast, Co was relatively easily desorbed from humic acid and a large proportion of the Co sorbed by humic acid remained isotopically exchangeable. Cobalt sorbed by montmorillonite was more easily desorbed than that sorbed by soil oxide but less easily than that sorbed by humic acid.Cobalt sorption isotherms for whole soils at low site coverage were essentially linear and the gradients of isotherms increased with pH. A comparison of isotherm gradients for whole soils and individual soil components supported the suggestion that Co sorption in whole soils is largely controlled by soil oxide materials.

show abstract

“…The element-specific medians of the five heavy metals ranged from 57% (Cr) to 87% (Zn) (Figure 2a-e). The much lower Ni, but especially Cr concentrations obtained by aqua regia and HNO 3 pressure digestion than by XRF detection suggests that a higher percentage of Cr is structurally bonded in silicates throughout all textural classes in comparison to Zn, Pb, and Cu (Fassbender and Seekamp 1976). An exception was the Cr content of three soils highly contaminated with heavy metals by sewage sludge.…”

Section: Element Contents Obtained By the Different Methodsmentioning

confidence: 94%

Comparison of methods for measuring heavy metals and total phosphorus in soils contaminated by different sources

Chander

Hartmann

Joergensen

et al. 2008

Archives of Agronomy and Soil Science

View full text Add to dashboard Cite

The relationships between the concentrations of zinc (Zn), lead (Pb), copper (Cu), nickel (Ni) and chromium (Cr) as measured by X-ray fluorescence analysis (XRF), aqua regia, and HNO 3 pressure digestion were studied in soil samples covering a wide range of heavy metal concentrations. The soils were contaminated by sewage sludge, exhaust depositions, river sediments of mining residues, and dump material. The question was addressed whether the source of heavy metals or other soil properties affect the relationship between these three methods. The aqua regia-digestible fraction of the five heavy metals reached on average 64% of the XRF-detectable content. The pressure accelerated HNO 3 -digestible fraction of the five heavy metals was on average 71% of the XRF-detectable content; the respective phosphorus (P) fraction reached a median of 75%. This suggests that HNO 3 pressure digestion can also be used for characterizing the total P content of soils. Aqua regia extraction and HNO 3 pressure digestion gave similar values for Zn, Pb, and Cu, which dominate the heavy metal load of most contamination sources. Significantly higher Cr values were obtained by HNO 3 pressure digestion than by aqua regia extraction. Additionally, the Cr contents were affected by the source, e.g. sewage sludge had relatively high contents of aqua regia and HNO 3 pressure extractable contents in comparison to the XRF values. The element-specific relationships between the three methods were all highly significant. However, the respective multiple linear regression models were in most cases affected by soil organic carbon (C), in some cases by clay or soil pH.

show abstract

Fraktionen und löslichkeit der schwermetalle Cd, Co, Cr, Cu, Ni und Pb im Boden

Cited by 19 publications

References 6 publications

Adsorption of cobalt by soil iron oxides at low solution concentration

Adsorption of cobalt by soil iron oxides at low solution concentration

Sorption and desorption of cobalt by soils and soil components

Comparison of methods for measuring heavy metals and total phosphorus in soils contaminated by different sources

Contact Info

Product

Resources

About