Predicting the activity of Cd2+ and Zn2+ in soil pore water from the radio-labile metal fraction

Tye, A.M.; Young, Scott D.; Crout, N.M.J.; Zhang, H; Preston, Sara; Barbosa-Jefferson, V. L.; Davison, William; McGrath, Steve P.; Paton, Graeme I.; Kilham, K.; Resende, Leandro Marques de

doi:10.1016/s0016-7037(02)01138-9

Cited by 127 publications

(126 citation statements)

References 43 publications

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“…Römkens et al 56 also found that whilst Zn become immobile due to fixation on oxhydroxides, Cd tends to remain 80 potentially available. Other authors have also reported greater fixation of Zn than Cd 25, 57,58 .Despite a relatively narrow range of soil pH values within the dataset, a linear decline in Cd and Pb lability with increasing pH was observed (Fig 5) weaker but still significant (p<0.01) negative correlation between % E with pH was also determined for Zn (r = -0.40, p<0.01). Other authors have reported negative correlations between the lability (% E) of Cd, Pb, Zn and pH in acidic to near-neutral soils 25,31,58 .…”

mentioning

confidence: 64%

Section: E-values -Methods Validation and Comparison Of Suspending Elementioning

confidence: 89%

“…Other authors have reported negative correlations between the lability (% E) of Cd, Pb, Zn and pH in acidic to near-neutral soils 25,31,58 . Cadmium, Pb and Zn adsorption onto oxides follow the 95 basic trend of increased absorption with pH 59 and therefore the pH influences the E-value 23 .…”

Section: E-values -Concentrationsmentioning

confidence: 90%

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Lability, solubility and speciation of Cd, Pb and Zn in alluvial soils of the River Trent catchment UK

Izquierdo

Tye

Chenery

2013

Environ. Sci.: Processes Impacts

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5Alluvial soils can store a wide range of metal contaminants originating from point and diffuse sources. The biological health of these soils is important as they act as an interface between terrestrial and aquatic environments, therefore playing an important role in maintaining the quality of surface waters. The aim of this work was to examine the lability, solubility and bioavailability of Pb, Zn and Cd in the top (0-15 cm) and sub soil (35-50 cm) of metal contaminated alluvial soils from the Trent catchment, U.K. Samples 10 (n=46) were collected from within 10m of the river bank. Sources of contamination include historical mining, industry, sewage treatment works and energy production. Enrichment factors based on total metal concentrations showed that contamination in soils declined with distance from the mining areas before rising again as a result of general urbanisation and identified point sources (e.g. river dredging activities). Pore waters were extracted and isotopic dilution and single extraction assays were undertaken on the soils 15 to assess the lability and solubility of the metals. Multi-element isotopic dilution assays were used to determine the labile pool or E-value of these metals in the soil. E-value concentrations were found to range between 0.5-14 mg/kg, 11-350 mg/kg and 25-594 mg/kg for Cd, Pb and Zn, respectively. Comparison of the E-value assay with the EU standard extraction assay for trace element availability (0.05M EDTA) showed that EDTA extractions generally over-estimated the E-value for Zn and Pb,with 20 the difference being greater as contamination levels increased. Bioavailability of the metals was assessed by speciating the pore waters [M Sol ] using WHAM 7 to obtain estimates of free ion activities (M 2+ ). Values of (M 2+ ) were compared to published 'median critical limits' for soils that estimate levels of protection for 95% of biological species. For each of the three metals, (M 2+ ) was found to exceed these critical limits at some sites. Solubility of the metals are reported using K d values expressed using both the 25 total and E-value as the solid phase. Finally we examine the use of different metal pools (total, E-value, EDTA-extractable) and different measures of Fe oxide pools (total, free total, free amorphous), in predicting [M Sol ] concentrations and (M 2+ ) using WHAM 7 in assemblage modelling mode. Overall best simultaneous model predictions for the three metals were obtained using the E-values. Larger overestimates of [M Sol ] and (M 2+ ) were produced using the EDTA and total metal pools whereas a better 30 fitting in the prediction was obtained when models used either the total or the free total FeOx pools. IntroductionAlluvial soils act as archives for fluvially dispersed metal contaminants from numerous sources [1][2][3][4][5] . These soils are often used in intensive agricultural systems. Several studies in the UK 35 have previously noted the potential for metal transfer into cattle, when grazing grass grown on contaminated alluvial soils [6][7] . In a...

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confidence: 64%

Section: E-values -Methods Validation and Comparison Of Suspending Elementioning

confidence: 89%

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Lability, solubility and speciation of Cd, Pb and Zn in alluvial soils of the River Trent catchment UK

Izquierdo

Tye

Chenery

2013

Environ. Sci.: Processes Impacts

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“…Many studies have examined the concentration and retention of metals in soils and the effect of various parameters on their adsorption and solubility, including pH (McBride and Blasiak, 1979;Cavallaro and McBride, 1980;Harter, 1983;Robb and Young, 1999;Green et al, 2003), redox conditions (Davranche and Bollinger, 2001;Davranche et al, 2003;Qafoku et al, 2003), amount of metals (Garcia-Miragaya, 1984;Basta and Tabatabai, 1992;Sauvé et al, 2000), cation exchange capacity (Ziper et al, 1988), organic matter content (Gerritse and Vandriel, 1984;Elliot et al, 1986;Benedetti et al, 1996aBenedetti et al, , 1996bKinniburgh et al, 1999;Kashem and Singh, 2001), soil mineralogy (Tiller et al, 1963;Jenne, 1968;Kinniburgh et al, 1976;Cavallaro and McBride, 1984;Kuo, 1986;Lindroos et al, 2003), biological and microbial conditions (Gerritse et al, 1992;Dumestre et al, 1999;Warren and Haack, 2001) as well as developing assemblage models to mechanistically predict these processes (Dzombak and Morel, 1987;Haworth, 1990;McBride et al, 1997;Celardin, 1999;Weng et al, 2002;Impellitteri et al, 2003, Tye et al, 2003. From these studies it has emerged that total soil metal content alone is not a good measure of short-term bioavailability and not a very useful tool to determine potential risks from soil contamination (Tack et al, 1995;…”

Section: Soil Pore Water and The Concept Of (Bio)availabilitymentioning

confidence: 99%

“…For the soil pore water sampling, the procedure described by Knight et al (1998) and Tye et al, (2003) can be normally followed. Samplers are inserted into soil containers and soil pore water extracted by connecting a syringe to each sampler and applying a suction.…”

Section: Rhizon Soil Moisture Samplers (Sms)mentioning

confidence: 99%

Overview of Selected Soil Pore Water Extraction Methods for the Determination of Potentially Toxic Elements in Contaminated Soils: Operational and Technical Aspects

Bonito¹,

Breward²,

Crout³

et al. 2008

Environmental Geochemistry

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Chemical elements that are either present naturally in the soil or introduced by pollution are more usefully estimated in terms of 'availability' of the element, since it is this property that can be related to mobility and uptake by plants. A good estimation of 'availability' can be achieved by measuring the concentration of the element in soil pore water. Recent achievements in analytical techniques allowed to expand the range of interest to trace elements, which play a crucial role both in contaminated and uncontaminated soils and include those defined as potentially toxic elements (PTE) in environmental studies. A complete chemical analysis of soil pore water represents a powerful diagnostic tool for the interpretation of many soil chemical phenomena relating to soil fertility, mineralogy, and environmental fate. This chapter describes some of the current methodologies used to extract soil pore water. In particular, four laboratory-based methods, i) high speed centrifugation-filtration, (ii) low (negative-) pressure Rhizon™ samplers, (iii) high pressure soil squeezing and (iv) equilibration of dilute soil suspensions, are described and discussed in detail. A number of operational factors are presented: pressure applicable (i.e., pore size involved), moisture pre-requisites of the soil, pore water yielding, efficiency, duration of extraction, materials and possible contaminations for PTE studies. Some consideration is then taken to assess advantages and disadvantages of the methods, including costs and materials availability.

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Environmental Impact of Metals, Metalloids, and Their Toxicity

Martínez‐Alcalá

Bernal

2020

Metalloids in Plants

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Predicting the activity of Cd2+ and Zn2+ in soil pore water from the radio-labile metal fraction

Cited by 127 publications

References 43 publications

Lability, solubility and speciation of Cd, Pb and Zn in alluvial soils of the River Trent catchment UK

Lability, solubility and speciation of Cd, Pb and Zn in alluvial soils of the River Trent catchment UK

Overview of Selected Soil Pore Water Extraction Methods for the Determination of Potentially Toxic Elements in Contaminated Soils: Operational and Technical Aspects

Environmental Impact of Metals, Metalloids, and Their Toxicity

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