Soil parameters are key factors to predict metal bioavailability to snails based on chemical extractant data

Pauget, Benjamin; Gimbert, Frédéric; Scheifler, Renaud; Cœurdassier, Michaël; Vaufleury, Annette de

doi:10.1016/j.scitotenv.2012.05.048

Cited by 50 publications

(18 citation statements)

References 49 publications

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“…When assessing metal bioavailability for earthworms, it might thus not be a priority to assess metals in the soil solution, but rather to have a strong knowledge on soil physico-chemical characteristics (Pauget et al, 2012). Table 5 Relationship between Cd and Pb partitioning in three subcellular compartments and soil metal availability assessed by CaCl 2 extraction, semi-mechanistic model of dissolved metals (diss.)…”

Section: Relationship Between Subcellular Partitioning and Soil Metalmentioning

confidence: 99%

Subcellular partitioning of metals in Aporrectodea caliginosa along a gradient of metal exposure in 31 field-contaminated soils

Beaumelle¹,

Gimbert

Hedde³

et al. 2015

Science of The Total Environment

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Section: Relationship Between Subcellular Partitioning and Soil Metalmentioning

confidence: 99%

Subcellular partitioning of metals in Aporrectodea caliginosa along a gradient of metal exposure in 31 field-contaminated soils

Beaumelle¹,

Gimbert

Hedde³

et al. 2015

Science of The Total Environment

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“…However, the measurement of the bioavailable concentration is not simple because this concentration is highly dependent on the physicochemical characteristics of the soil and the physiological characteristics of the specific organism (McLaughlin et al, 2000;Mourier, 2011;Pauget et al, 2012;García-Salgado et al, 2012). Thus, the final effects of contaminants in organisms are the result of an overall process that involves a physicochemical desorption process, a physiologically uptake process, and redistribution within the organism's organs (Peijgenburg, 1999;Semenzin et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Assessing the ecotoxicological effects of long-term contaminated mine soils on plants and earthworms: relevance of soil (total and available) and body concentrations

et al. 2014

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El acceso a la versión del editor puede requerir la suscripción del recurso AbstractThe interactions and relevance of the soil (total and available) concentrations, accumulation, and acute toxicity of several essential and non-essential trace elements were investigated to determine their importance in environmental soil assessment. Three plant species (T. aestivum, R. sativum, and V. sativa) and E. fetida were simultaneously exposed for 21 days to long-term contaminated soils collected from the surroundings of an abandoned pyrite mine. The soils presented different levels of As and metals, mainly Zn and Cu, and were tested at different soil concentrations (12.5, 25, 50, and 100% of contaminated soil/soil (w/w)) to increase the range of total and available soil concentrations necessary for the study. The total concentrations in the soils (of both As and metals) were better predictors of earthworm uptake than were the available concentrations. In plants, the accumulation of metals was related to the available concentrations of Zn and Cu, which could indicate that plants and earthworms accumulate elements from different pools of soil contaminants. Moreover, Zn and Cu, which are essential elements, showed controlled uptake at low concentrations. The external metal concentrations predicted earthworm mortality, whereas in plants, the effects on growth were correlated to the As and metal contents in the plants. In general, the bioaccumulation factors were lower at higher exposure levels, which implies the existence of auto-regulation in the uptake of both essential and non-essential elements by plants and earthworms.

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“…Indeed, in addition to their plant-based diet, snails also ingest significant amounts of soil particles to satisfy their physiological needs (Gomot et al, 1989). This could allow snails to pick up quite strongly bounded TE on soil constituents (Pauget et al, 2012). Thus, as previously shown for earthworms (van Gestel, 2008), total soil concentrations are a better indicator of the amounts of TE that are available for snails, than the CaCl 2 extractable pools.…”

Section: Standardized Chemical Methods For Te Extraction From Soils Pmentioning

confidence: 94%

“…Because these chemical extraction methods are easy to use, reproducible and based on an easily understandable concept (the more the TE are easy to extract, the more they can interfere with living organisms), they are routinely used for risk assessment of contaminated sites. However numerous studies Pauget et al, 2012;Peakall and Burger, 2003;van Gestel, 2008) have shown that the level of "available" elements, as determined by chemical extraction methods, is often a poor proxy of the fraction of TE that actually interacts with living organisms. By contrast, the environmental bioavailability refers to the fraction of contaminant that is actually taken up by biological receptors.…”

Section: Introductionmentioning

confidence: 99%

In situ assessment of phyto and zooavailability of trace elements: A complementary approach to chemical extraction procedures

Pauget

Faure

Conord

et al. 2015

Science of The Total Environment

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For an accurate risk assessment of sites contaminated by trace elements (TE), measurements of bioavailability must be performed. This is routinely achieved using the standardized 0.01M CaCl2 method. However, the suitability of chemical extractions as proxies of bioavailability is questionable. We analyzed the correlations between chemically estimated TE bioavailability and TE actually accumulated by coupling plant and snails bioindicators. Results showed a better correlation between plant TE contents and CaCl2 fraction while total soil concentration better explained snail TE contents. However in both cases chemical measures were not suitable to predict TE accumulation and bioavailability. Considering the soil properties only improve the estimation of Cr, Ni and Pb accumulation by plants while for snails, TE contents in viscera were dependent both on soil and plant contents and soil properties. It highlights the complementarities of biomonitoring methods to assess bioavailability. This dual approach allows a "physiologically defined" evaluation of bioavailability.

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Soil parameters are key factors to predict metal bioavailability to snails based on chemical extractant data

Cited by 50 publications

References 49 publications

Subcellular partitioning of metals in Aporrectodea caliginosa along a gradient of metal exposure in 31 field-contaminated soils

Subcellular partitioning of metals in Aporrectodea caliginosa along a gradient of metal exposure in 31 field-contaminated soils

Assessing the ecotoxicological effects of long-term contaminated mine soils on plants and earthworms: relevance of soil (total and available) and body concentrations

In situ assessment of phyto and zooavailability of trace elements: A complementary approach to chemical extraction procedures

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