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Effect of soil properties on Pb bioavailability and toxicity to the soil invertebrate Enchytraeus crypticus.
Chemosphere. 2019 Feb; 217:9-17.C

Abstract

The present study investigated the bioavailability and toxicity of lead to the potworm Enchytraeus crypticus in six soils with different properties. Pb partitioning between the soil solution and solid phase was affected by soil organic matter (OM) content, cation exchange capacity (CEC) and water holding capacity (WHC). After 21 d exposure, Pb bioaccumulation in the enchytraeids was positively correlated with total soil Pb concentration. Bioaccumulation was best predicted by Pb availability (CaCl2-extractable and porewater Pb concentrations), and by the Ca concentration in pore water and the CEC of the soils. Toxicity varied greatly among soils, with LC50s and EC50reproductions based on total Pb concentrations ranging from 246 to >3092 and from 81 to 1008 mg Pb/kg dry soil, respectively. The variation in LC50s among soils was explained by differences in CaCl2-extractable Pb concentrations in soil and internal Pb concentrations in the animals. The differences in EC50reproductions could be explained from the CaCl2-extractable Pb concentrations in the soils. Although it was also correlated with CEC and porewater Ca concentration, pHCaCl2 was the dominating factor for predicting Pb toxicity based on total soil concentrations. This study demonstrates that soil properties, such as pH, CEC and Ca concentration in pore water, significantly affected the bioavailability and toxicity of Pb and therefore should be taken into account when assessing the ecological risk of metals in contaminated soils.

Authors+Show Affiliations

Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands.Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands.Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands. Electronic address: kees.van.gestel@vu.nl.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30391789

Citation

Zhang, Lulu, et al. "Effect of Soil Properties On Pb Bioavailability and Toxicity to the Soil Invertebrate Enchytraeus Crypticus." Chemosphere, vol. 217, 2019, pp. 9-17.
Zhang L, Verweij RA, Van Gestel CAM. Effect of soil properties on Pb bioavailability and toxicity to the soil invertebrate Enchytraeus crypticus. Chemosphere. 2019;217:9-17.
Zhang, L., Verweij, R. A., & Van Gestel, C. A. M. (2019). Effect of soil properties on Pb bioavailability and toxicity to the soil invertebrate Enchytraeus crypticus. Chemosphere, 217, 9-17. https://doi.org/10.1016/j.chemosphere.2018.10.146
Zhang L, Verweij RA, Van Gestel CAM. Effect of Soil Properties On Pb Bioavailability and Toxicity to the Soil Invertebrate Enchytraeus Crypticus. Chemosphere. 2019;217:9-17. PubMed PMID: 30391789.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of soil properties on Pb bioavailability and toxicity to the soil invertebrate Enchytraeus crypticus. AU - Zhang,Lulu, AU - Verweij,Rudo A, AU - Van Gestel,Cornelis A M, Y1 - 2018/10/22/ PY - 2018/08/29/received PY - 2018/10/18/revised PY - 2018/10/20/accepted PY - 2018/11/6/pubmed PY - 2019/1/25/medline PY - 2018/11/5/entrez KW - Bioavailability KW - Enchytraeus crypticus KW - Lead KW - Soil properties KW - Toxicity SP - 9 EP - 17 JF - Chemosphere JO - Chemosphere VL - 217 N2 - The present study investigated the bioavailability and toxicity of lead to the potworm Enchytraeus crypticus in six soils with different properties. Pb partitioning between the soil solution and solid phase was affected by soil organic matter (OM) content, cation exchange capacity (CEC) and water holding capacity (WHC). After 21 d exposure, Pb bioaccumulation in the enchytraeids was positively correlated with total soil Pb concentration. Bioaccumulation was best predicted by Pb availability (CaCl2-extractable and porewater Pb concentrations), and by the Ca concentration in pore water and the CEC of the soils. Toxicity varied greatly among soils, with LC50s and EC50reproductions based on total Pb concentrations ranging from 246 to >3092 and from 81 to 1008 mg Pb/kg dry soil, respectively. The variation in LC50s among soils was explained by differences in CaCl2-extractable Pb concentrations in soil and internal Pb concentrations in the animals. The differences in EC50reproductions could be explained from the CaCl2-extractable Pb concentrations in the soils. Although it was also correlated with CEC and porewater Ca concentration, pHCaCl2 was the dominating factor for predicting Pb toxicity based on total soil concentrations. This study demonstrates that soil properties, such as pH, CEC and Ca concentration in pore water, significantly affected the bioavailability and toxicity of Pb and therefore should be taken into account when assessing the ecological risk of metals in contaminated soils. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30391789/Effect_of_soil_properties_on_Pb_bioavailability_and_toxicity_to_the_soil_invertebrate_Enchytraeus_crypticus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(18)32007-1 DB - PRIME DP - Unbound Medicine ER -