Bioconcentration and biokinetics of heavy metals in the earthworm

Neuhauser, Edward F.; Cukic, Z.; Malecki, Michael R.; Loehr, Raymond C.; Durkin, Patrick R.

doi:10.1016/0269-7491(94)00072-l

Cited by 128 publications

(79 citation statements)

References 22 publications

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“…The observation that simple ln-ln regression models best fit the data indicates that the bioaccumulation of contaminants by earthworms decreases as soil concentrations increase. Similar conclusions were reported by Neuhauser et al [9]. Mechanisms for this decrease in accumulation may include an increase in elimination rate as soil concentration increases or toxicity.…”

Section: Discussionsupporting

confidence: 83%

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Literature‐derived bioaccumulation models for earthworms: Development and validation

Sample¹,

Suter²,

Beauchamp

et al. 1999

Enviro Toxic and Chemistry

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Abstract-Estimation of contaminant concentrations in earthworms is a critical component in many ecological risk assessments. Without site-specific data, literature-derived uptake factors or models are frequently used. Although considerable research has been conducted on contaminant transfer from soil to earthworms, most studies focus on only a single location. External validation of transfer models has not been performed. We developed a database of soil and tissue concentrations for nine inorganic and two organic chemicals. Only studies that presented total concentrations in depurated earthworms were included. Uptake factors and simple and multiple regression models of natural-log-transformed concentrations of each analyte in soil and earthworms were developed using data from 26 studies. These models were then applied to data from six additional studies. Estimated and observed earthworm concentrations were compared using nonparametric Wilcoxon signed-rank tests. Relative accuracy and quality of different estimation methods were evaluated by calculating the proportional deviation ([measured Ϫ estimate]/measured) of the estimate from the measured value. With the exception of Cr, significant, single-variable (e.g., soil concentration) regression models were fit for each analyte. Inclusion of soil Ca improved model fits for Cd and Pb. Soil pH only marginally improved model fits. The best general estimates of chemical concentrations in earthworms were generated by simple ln-ln regression models for As, Cd, Cu, Hg, Mn, Pb, Zn, and polychlorinated biphenyls. No method accurately estimated Cr or Ni in earthworms. Although multiple regression models including pH generated better estimates for a few analytes, in general, the predictive utility gained by incorporating environmental variables was marginal.

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Section: Discussionsupporting

confidence: 83%

“…18,1999 B.E. Sample et al hauser et al [9] and not the current study.) Exceptions were Cr and Ni, for which no estimation method worked well.…”

Section: Discussionmentioning

confidence: 63%

Literature‐derived bioaccumulation models for earthworms: Development and validation

Sample¹,

Suter²,

Beauchamp

et al. 1999

Enviro Toxic and Chemistry

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show abstract

“…These results differ from those in the literature where bioaccumulation of contaminants by earthworms is reported to decrease as soil concentrations increase (Neuhauser et al 1995, Sample et al 1999. The fact that arsenic accumulation in earthworms at DGC does not conform to models in the literature is likely due to their reported resistance to arsenic toxicity (Langdon et al 1999).…”

Section: Discussioncontrasting

confidence: 80%

Earthworms and in vitro physiologically-based extraction tests: complementary tools for a holistic approach towards understanding risk at arsenic-contaminated sites

Button

Watts

Cave

et al. 2008

Environ Geochem Health

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“…The bioaccumulation of contaminants can also serve as a measure of the bioavailability of metals in the soil and vice versa (Van Gestel et al, 2002). Body residue is considered a better surrogate for exposure, and this measure, rather than the exposure concentration based on the total metal concentration, can be used to predict toxicity in risk assessments (Neuhauser et al, 1995;Smith et al, 2012). This approach assumes that a certain concentration of a chemical in a living receptor is associated with an adverse biological effect (Pentinnen et al, 2011).…”

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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Bioconcentration and biokinetics of heavy metals in the earthworm

Cited by 128 publications

References 22 publications

Literature‐derived bioaccumulation models for earthworms: Development and validation

Literature‐derived bioaccumulation models for earthworms: Development and validation

Earthworms and in vitro physiologically-based extraction tests: complementary tools for a holistic approach towards understanding risk at arsenic-contaminated sites

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

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