Quantifying the influence of soil properties on the solubility of metals by predictive modelling of secondary data

Rieuwerts, John; Thornton, I.; Farago, M. E.; Ashmore, Mike

doi:10.3184/095422998782775817

Cited by 39 publications

(22 citation statements)

References 29 publications

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“…Our Bio-As findings are in agreement with those of Silva et al 2014 who suggested that As mobility is independent of the granulometric fractions of the examined soil profiles (Sauvé et al 2000). The predictors used in the models of Bio-Cu, Bio-Pb, and Bio-Zn, however, were inconsistent with previous studies, which found pH to be the best predictor (Buchter et al 1989;Rieuwerts et al 1998Rieuwerts et al , 2006Rodrigues et al 2013). This difference may be because Bio-HMs are highly dependent on the variation of specific soil properties and not their absolute values.…”

Section: Discussioncontrasting

confidence: 48%

Bioaccessibility of heavy metals in soils cannot be predicted by a single model in two adjacent areas

Zhu

Yang

Wei

et al. 2015

Environ Geochem Health

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The objective of this study was to examine whether a single model could be used to predict the bioaccessibility of heavy metals in soils in two adjacent areas and to determine the feasibility of using existing data sets of total metal concentrations and soil property parameters (e.g., pH, total organic carbon, and soil texture) when predicting heavy metal bioaccessibility. A total of 103 topsoil samples were collected from two adjacent areas (Baotou and Bayan Obo). A total of 76 samples were collected from Baotou, and 27 were collected from Bayan Obo. The total and bioaccessible concentrations of arsenic (As), copper (Cu), lead (Pb), and zinc (Zn) were measured following complete composite acid digestion and a simple bioaccessibility extraction test. The average total concentrations of As, Cu, Pb, and Zn were 8. 95, 27.53, 28.40, and 79.50 mg/kg, respectively, in Baotou and 18.12, 30.75, 38.09, and 87.62 mg/kg in Bayan Obo. Except for As, these values were similar in both areas. The average bioaccessible heavy metal concentrations (Bio-HMs) for each target HM were also similar. In Baotou, the average Bio-HM values for As, Cu, Pb, and Zn were 1.16, 3.76, 16.31, and 16.10 mg/kg, respectively, and 1.26, 2.51, 14.31, and 8.68 mg/kg in Bayan Obo. However, the relative bioaccessibilities for each HM in Baotou were greater than those in Bayan Obo, with mean values for Pb, Zn, Cu, and As of 57, 20, 17, and 12 %, respectively, in Baotou and 40, 11, 9, and 8 % in Bayan Obo. In both areas, prediction models were successfully created using heavy metal concentrations and soil physicochemical parameters; however, models of the same target element differed between the areas, which indicated that a common model for both sites does not exist. Bio-HMs were highly affected by soil properties, which were found to differ between the adjacent areas. In addition, soil properties with large variations played major roles in the predictive models. This study highlights the importance of incorporating physical and chemical parameters that vary greatly when building predictive models of heavy metal bioaccessibility in soil. A similarity in soil properties between areas might be a prerequisite for the creation of a common predictive model for soil Bio-HMs.

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Section: Discussioncontrasting

confidence: 48%

Bioaccessibility of heavy metals in soils cannot be predicted by a single model in two adjacent areas

Zhu

Yang

Wei

et al. 2015

Environ Geochem Health

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“…) (Tills and Alloway, 1983b;Garcia-Miragaya, 1984;Ram and Verloo, 1985;Sanchez-Camazano et al, 1994;Chuan et al, 1996;Thornton, 1996). This point is also demonstrated in Figure 4 using soils from a catenary sequence of six soils in N.Wales (Rieuwerts et al, 1998b). In acid conditions, adsorption is a more important process than the precipitation of solid phases in decreasing the concentration of metal ions in solution and the reverse is true in alkaline conditions (Elliott et al, 1986a, Yong et al, 1993.…”

Section: Factors Affecting the Solid-solution Partition Of CD Cu Pbmentioning

confidence: 77%

“…As availability of such data is limited, models will necessarily be based on simple descriptions of soil processes and further research is required to provide the data required. We are currently developing predictive models which will enable estimations to be made of metal concentrations in soil solution from existing data on 'total' metal concentrations and soil parameters (Rieuwerts et al, 1998a). The resulting data will subsequently be used in the establishment of critical loads for Cd, Cu, Pb and Zn.…”

Section: Resultsmentioning

confidence: 99%

Factors influencing metal bioavailability in soils: preliminary investigations for the development of a critical loads approach for metals

Rieuwerts

Thornton

Farago

et al. 1998

Chemical Speciation & Bioavailability

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495

232

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“…Rieuwerts at al., 1998b;Meers et al, 2005). In addition to the chemical forms in which each trace metal occurs, plant absorption is determined by certain soil properties, such as the pH or the abundance of constituents that can easily retain metals, as well as by the physiological and genetic specifics of the plants.…”

Section: Total Trace Element Contents In Soil and Soil-plant Transfermentioning

confidence: 99%

Cadmium in soils and cereal grains after sewage-sludge application on French soils. A review

Baize

2009

Agron. Sustain. Dev.

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-Recycling sewage sludges as fertilisers on soils for crop production has several potential benefits such as providing large amounts of phosphorous and organic matter. However, the spreading of urban sewage sludge is a constant cause of controversy because it is known to introduce potentially toxic trace metals into the soil, particularly cadmium. In order to clarify this debate, this review article presents a synthesis of the results of several studies carried out in France on the impact of sewage-sludge spreading. This article reports mainly Cd results but also some results on other trace metals such as Cr, Cu, Hg, Ni, Pb and Zn. Two kinds of data are presented: (1) soil data including total metal contents and data from partial extraction to evaluate the phytoavailable fractions, and (2) plant data including metal content of wheat, a major agricultural crop. The field experiments involved very different amounts of applied sewage sludges and Cd. Indeed, three categories of experiments stand out, the first and second involving high amounts of applied Cd, and the third involving low amounts of applied Cd: (1) during the 1970s and '80s, sludges with a high trace metal content, especially Cd, were spread at the INRA trials at Couhins experimental farm on sandy soils and in the Vexin area on silty topsoils. The quantities of applied Cd were very high, ranging from 3600 g to 641 000 g per ha. Here, the results show a notable impact on total Cd contents of topsoil and cereal grains. (2) Sludges containing high levels of industrial cadmium were spread on acid soils in the Limousin region for more than twenty years up to 1998. Topsoil Cd contents were measured in fields where the cadmium input was highest, of 300 to 600 g Cd per ha. Here, a clear increase in the Cd content of cereal grains was found. (3) During the 1990s and 2000s, numerous experiments with sewage-sludge applications compatible with the new French regulations of 1998 were implemented. The amounts of applied Cd were therefore much lower, from 0.6 to 270 g/ha. Here, no impact was detected on the composition of cereal grains. This review article concludes that the application of huge quantities of sewage sludges in the 1970s and '80s had a clear and long-lasting effect on both soil and grain Cd compositions. Nonetheless, spreading sewage sludge in accordance with the new French regulations had no significant impact on soil and cereal-grain Cd concentrations.cadmium / cereal grains / phytoavailability / sewage sludge / soil / total content

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Quantifying the influence of soil properties on the solubility of metals by predictive modelling of secondary data

Cited by 39 publications

References 29 publications

Bioaccessibility of heavy metals in soils cannot be predicted by a single model in two adjacent areas

Bioaccessibility of heavy metals in soils cannot be predicted by a single model in two adjacent areas

Factors influencing metal bioavailability in soils: preliminary investigations for the development of a critical loads approach for metals

Cadmium in soils and cereal grains after sewage-sludge application on French soils. A review

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