Fluxes of Cu, Zn, Pb, Cd, Cr, and Ni in temperate forest ecosystems

Bergkvist, Bo; Folkeson, Lennart; Berggren, Dan

doi:10.1007/bf00279328

Cited by 193 publications

(80 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many researchers have found evidence in support of the 'free ion activity model', where the toxicity or bioavailability is assumed to be related to the activity of the free, hydrated form of the metal (Allen et al, 1980;Hue et al, 1986). Regarding transport, the formation of soluble organic complexes has been shown to be an important mechanism for the mobilisation of many heavy metals in soils (Bergkvist et al, 1989;Berggren, 1992b;Berggren, 1992a). Thus, any model describing the transport and bioavailability of metals in soils -and waters -has to consider the speciation in the aqueous phase.…”

Section: Metals In Natural Waters Generally Exist In Different Physicmentioning

confidence: 99%

Acid–base and copper-binding properties of three organic matter fractions isolated from a forest floor soil solution

Schaik

Kleja

Gustafsson

2010

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

ABSTRACT.Vast amounts of knowledge about the proton-and metal-binding properties of dissolved organic matter (DOM) in natural waters have been obtained in studies on isolated humic and fulvic (hydrophobic) acids. Although macromolecular hydrophilic acids normally make up about one-third of DOM, their proton-and metal-binding properties are poorly known. Here we investigated the acid-base and Cu-binding properties of the hydrophobic (fulvic) acid fraction and two hydrophilic fractions isolated from a soil solution. Proton titrations revealed a higher total charge for the hydrophilic acid fractions than for the hydrophobic acid fraction. The most hydrophilic fraction appeared to be dominated by weak acid sites, as evidenced by increased slope of the curve of surface charge versus pH at pH values above 6. The titration curves were poorly predicted by both Stockholm Humic Model (SHM) and NICA-Donnan model calculations using generic parameter values, but could be modelled accurately after optimisation of the proton-binding parameters (pH ≤ 9). Cu-binding isotherms for the three fractions were determined at pH values of 4, 6 and 9. With the optimised proton-binding parameters, the SHM model predictions for Cu binding improved, whereas the NICA-Donnan predictions deteriorated. After optimisation of Cu-binding parameters, both models described the experimental data satisfactorily. Iron(III) and aluminium competed strongly with Cu for binding sites at both pH 4 and pH 6. The SHM model predicted this competition reasonably well, but the NICA-Donnan model underestimated the effects significantly at pH 6. Overall, the Cu-binding behaviour of the two hydrophilic acid fractions was very similar to that of the hydrophobic acid fraction, despite the differences observed in 3 proton-binding characteristics. These results show that for modelling purposes, it is essential to include the hydrophilic acid fraction in the pool of 'active' humic substances.

show abstract

Section: Metals In Natural Waters Generally Exist In Different Physicmentioning

confidence: 99%

Acid–base and copper-binding properties of three organic matter fractions isolated from a forest floor soil solution

Schaik

Kleja

Gustafsson

2010

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

show abstract

“…In Sweden for example, with the increasing industrial activity, Pb, Cd and Hg contents have increased by 50% in the upper soil organic layers (EEA, 1998). Bergkvist et al (1989) draw attention over the lack of data on the distribution of heavy metals in pristine or non heavily polluted areas. Some investigations aimed to understand the behaviour of heavy metals, such as Cr, Co, Ni, Cu, Zn, Cd and Pb, in soils (Kabata-Pendias and Pendias, 1992).…”

Section: Introductionmentioning

confidence: 99%

Heavy metal distribution in some French forest soils: evidence for atmospheric contamination

Hernandez

Probst

et al. 2003

Science of The Total Environment

460

256

View full text Add to dashboard Cite

This study is one of very few dealing with the distribution and the origin of heavy metals in French soils from a priori non-polluted forest areas. The abundance of heavy metals measured in these soils decreases as follows: Cr) Zn)Pb)Ni)Cu)Co4Cd. Total concentrations of Pb, Cr and Ni in some soils exceed the European thresholds for non-polluted soils and even the French association of normalization critical values for sludge spreading. The lowest heavy metal contents are observed in acid soils while the highest concentrations are in the calcaric cambisol and in the mollic andosol, which is rather scarce as compared with the other French forest soils. With the exception of the podzol, Cr and Ni concentrations increase with depth in all soil profiles. The distribution pattern of Co, Cu, Zn depends on the soil characteristics. In some acid soils, however, Cu and Zn decrease with depth. Pb and Cd are accumulated in the upper soil horizons. Heavy metals accumulate in deep soil horizons in relation to important clay content in the dystric planosol and stagnic luvisol. The concentration of each heavy metal is always controlled by different parameters (soil pH, iron and aluminum oxide content, clay content, organic matter and cation exchange capacity), which are heavy metal specific. This study highlights the metal-trapping character of andosol and calcaric soil, the weak heavy metal retention in acid soils, the leaching and trapping character in leached clayed soils, and the migration of heavy metals in the podzol. Pb and Cr concentrations indicate a significant enrichment in surface horizons from various soils in areas which receive significant acid atmospheric pollution. Particularly, the highest Pb content is observed in a soil located in the N-NE part of France. Lead isotope ratios measured in the cambic podzol and the calcaric cambisol, exhibit the importance of the anthropogenic sources and particularly the influence of global atmospheric inputs from leaded gasoline compared to regional and local industrial emissions. The anthropogenic Pb contribution is estimated to 83, 30 and 11%, respectively, for surface, intermediate and deep horizons of the cambic podzol located in the northern part of France, and to 68% in surface horizon of the calcaric cambisol located in the Alps.

show abstract

“…The topsoil is particularly vulnerable as it is the biologically most active part of the soil system and biological activity has been shown to be highly sensitive to metal pollution (Bergkvist et al, 1989). In this respect, aspen and Populus species in general should be avoided for afforesting Cd and Zn contaminated lands because they translocate high amounts of Cd and Zn into the foliage.…”

Section: Implications For Phytostabilizationmentioning

confidence: 99%

Elevated Cd and Zn uptake by aspen limits the phytostabilization potential compared to five other tree species

Nevel

Mertens

Staelens

et al. 2011

Ecological Engineering

View full text Add to dashboard Cite

Phytostabilization of metals using trees is often promoted although the influence of different tree species on the mobilization of metals is not yet clear. This study examined effects of six tree species on the soil characteristics pH, organic carbon (OC) content and cation exchange capacity (CEC) and on the redistribution of cadmium (Cd) and zinc (Zn) on a polluted sandy soil. Soil and biomass were sampled in 10-years-old stands growing on former agricultural land. The tree species included were silver birch (Betula pendula), oak (Quercus robur and Q. petraea), black locust (Robinia pseudoacacia), aspen (Populus tremula), Scots pine (Pinus sylvestris) and Douglas fir (Pseudotsuga menziesii). In the short period of ten years, only aspen caused significant changes in the soil characteristics. Due to accumulation of Cd and Zn in its leaf litter, aspen increased the total as well as the NH 4 OAc-EDTA-extractable Cd and Zn concentrations in the topsoil compared to deeper soil layers and to other tree species. Also topsoil pH, OC content and CEC were significantly higher than under most of the other species. This caused rather low 'bio-available' CaCl 2 -extractable concentrations under aspen. Nevertheless, given the risks of aboveground metal dispersion and topsoil accumulation, it is recommended that aspen should be avoided when afforesting Cd and Zn contaminated lands.

show abstract

Fluxes of Cu, Zn, Pb, Cd, Cr, and Ni in temperate forest ecosystems

Cited by 193 publications

References 82 publications

Acid–base and copper-binding properties of three organic matter fractions isolated from a forest floor soil solution

Acid–base and copper-binding properties of three organic matter fractions isolated from a forest floor soil solution

Heavy metal distribution in some French forest soils: evidence for atmospheric contamination

Elevated Cd and Zn uptake by aspen limits the phytostabilization potential compared to five other tree species

Contact Info

Product

Resources

About