Lanthanum toxicity to five different species of soil invertebrates in relation to availability in soil

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

This study determined the toxicity of lanthanum, one of the most commonly used rare earth elements (REEs), to five representative soil invertebrates after 3–4 weeks exposure. Toxicity was related to total, 0.01 M CaCl2-extractable and porewater concentrations in the standard LUFA 2.2 soil, and for earthworms also to body concentrations. La sorption to LUFA 2.2 soil, estimated by relating total soil concentrations to CaCl2-extractable or porewater concentrations seemed to reach saturation at >1000 mg La/kg dry soil. Isopod (Porcellio scaber) growth was the most sensitive endpoint, followed by earthworm (Eisenia andrei), enchytraeid (Enchytraeus crypticus), springtail (Folsomia candida) and oribatid mite (Oppia nitens) reproduction, with EC50s of 312 (95% confidence interval: 5.6–619), 529 (295–762), 1010 ((>377 < 3133), 1220 (1180–1250) and 1500 (1250–1750) mg La/kg dry soil, respectively. EC50s related to CaCl2-extractable concentrations ranged between 1.3 (0.046–2.6) and 15.6 (5.6–25.7) mg La/kg dry soil, while porewater-based EC50s were 3.5 (−) and 10.2 (−) mg/L for the springtails and mites, respectively. La uptake in the earthworms linearly increased with increasing exposure concentration with bioaccumulation factors ranging between 0.04 and 0.53 (average ± SE: 0.24 ± 0.032). EC50 for effects on earthworm reproduction related to internal concentrations was 184 (61–301) mg La/kg dry body weight. A risk assessment based on the available toxicity for soil invertebrates, bacteria and plants resulted in an HC5 of approx. 50 mg La/kg dry soil, suggesting that La may affect soil ecosystems at concentrations slightly above natural background levels (6.6–50 mg La/kg dry soil) in non-polluted soils.

Original languageEnglish
Pages (from-to)412-420
Number of pages9
JournalChemosphere
Volume193
DOIs
Publication statusPublished - 1 Feb 2018

Fingerprint

Lanthanum
Invertebrates
Toxicity
Soil
invertebrate
Availability
toxicity
Soils
Oligochaeta
soil
earthworm
porewater
Mites
mite
Reproduction
Isopoda
soil ecosystem
Bioaccumulation
isopod
Candida

Keywords

  • Bioaccumulation
  • Bioavailability
  • Lanthanum
  • Risk assessment

Cite this

@article{f8e0bec4553946d28a38ccff0ebca52d,
title = "Lanthanum toxicity to five different species of soil invertebrates in relation to availability in soil",
abstract = "This study determined the toxicity of lanthanum, one of the most commonly used rare earth elements (REEs), to five representative soil invertebrates after 3–4 weeks exposure. Toxicity was related to total, 0.01 M CaCl2-extractable and porewater concentrations in the standard LUFA 2.2 soil, and for earthworms also to body concentrations. La sorption to LUFA 2.2 soil, estimated by relating total soil concentrations to CaCl2-extractable or porewater concentrations seemed to reach saturation at >1000 mg La/kg dry soil. Isopod (Porcellio scaber) growth was the most sensitive endpoint, followed by earthworm (Eisenia andrei), enchytraeid (Enchytraeus crypticus), springtail (Folsomia candida) and oribatid mite (Oppia nitens) reproduction, with EC50s of 312 (95{\%} confidence interval: 5.6–619), 529 (295–762), 1010 ((>377 < 3133), 1220 (1180–1250) and 1500 (1250–1750) mg La/kg dry soil, respectively. EC50s related to CaCl2-extractable concentrations ranged between 1.3 (0.046–2.6) and 15.6 (5.6–25.7) mg La/kg dry soil, while porewater-based EC50s were 3.5 (−) and 10.2 (−) mg/L for the springtails and mites, respectively. La uptake in the earthworms linearly increased with increasing exposure concentration with bioaccumulation factors ranging between 0.04 and 0.53 (average ± SE: 0.24 ± 0.032). EC50 for effects on earthworm reproduction related to internal concentrations was 184 (61–301) mg La/kg dry body weight. A risk assessment based on the available toxicity for soil invertebrates, bacteria and plants resulted in an HC5 of approx. 50 mg La/kg dry soil, suggesting that La may affect soil ecosystems at concentrations slightly above natural background levels (6.6–50 mg La/kg dry soil) in non-polluted soils.",
keywords = "Bioaccumulation, Bioavailability, Lanthanum, Risk assessment",
author = "Jinxia Li and Verweij, {Rudo A.} and {van Gestel}, {Cornelis A.M.}",
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Lanthanum toxicity to five different species of soil invertebrates in relation to availability in soil. / Li, Jinxia; Verweij, Rudo A.; van Gestel, Cornelis A.M.

In: Chemosphere, Vol. 193, 01.02.2018, p. 412-420.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Lanthanum toxicity to five different species of soil invertebrates in relation to availability in soil

AU - Li, Jinxia

AU - Verweij, Rudo A.

AU - van Gestel, Cornelis A.M.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - This study determined the toxicity of lanthanum, one of the most commonly used rare earth elements (REEs), to five representative soil invertebrates after 3–4 weeks exposure. Toxicity was related to total, 0.01 M CaCl2-extractable and porewater concentrations in the standard LUFA 2.2 soil, and for earthworms also to body concentrations. La sorption to LUFA 2.2 soil, estimated by relating total soil concentrations to CaCl2-extractable or porewater concentrations seemed to reach saturation at >1000 mg La/kg dry soil. Isopod (Porcellio scaber) growth was the most sensitive endpoint, followed by earthworm (Eisenia andrei), enchytraeid (Enchytraeus crypticus), springtail (Folsomia candida) and oribatid mite (Oppia nitens) reproduction, with EC50s of 312 (95% confidence interval: 5.6–619), 529 (295–762), 1010 ((>377 < 3133), 1220 (1180–1250) and 1500 (1250–1750) mg La/kg dry soil, respectively. EC50s related to CaCl2-extractable concentrations ranged between 1.3 (0.046–2.6) and 15.6 (5.6–25.7) mg La/kg dry soil, while porewater-based EC50s were 3.5 (−) and 10.2 (−) mg/L for the springtails and mites, respectively. La uptake in the earthworms linearly increased with increasing exposure concentration with bioaccumulation factors ranging between 0.04 and 0.53 (average ± SE: 0.24 ± 0.032). EC50 for effects on earthworm reproduction related to internal concentrations was 184 (61–301) mg La/kg dry body weight. A risk assessment based on the available toxicity for soil invertebrates, bacteria and plants resulted in an HC5 of approx. 50 mg La/kg dry soil, suggesting that La may affect soil ecosystems at concentrations slightly above natural background levels (6.6–50 mg La/kg dry soil) in non-polluted soils.

AB - This study determined the toxicity of lanthanum, one of the most commonly used rare earth elements (REEs), to five representative soil invertebrates after 3–4 weeks exposure. Toxicity was related to total, 0.01 M CaCl2-extractable and porewater concentrations in the standard LUFA 2.2 soil, and for earthworms also to body concentrations. La sorption to LUFA 2.2 soil, estimated by relating total soil concentrations to CaCl2-extractable or porewater concentrations seemed to reach saturation at >1000 mg La/kg dry soil. Isopod (Porcellio scaber) growth was the most sensitive endpoint, followed by earthworm (Eisenia andrei), enchytraeid (Enchytraeus crypticus), springtail (Folsomia candida) and oribatid mite (Oppia nitens) reproduction, with EC50s of 312 (95% confidence interval: 5.6–619), 529 (295–762), 1010 ((>377 < 3133), 1220 (1180–1250) and 1500 (1250–1750) mg La/kg dry soil, respectively. EC50s related to CaCl2-extractable concentrations ranged between 1.3 (0.046–2.6) and 15.6 (5.6–25.7) mg La/kg dry soil, while porewater-based EC50s were 3.5 (−) and 10.2 (−) mg/L for the springtails and mites, respectively. La uptake in the earthworms linearly increased with increasing exposure concentration with bioaccumulation factors ranging between 0.04 and 0.53 (average ± SE: 0.24 ± 0.032). EC50 for effects on earthworm reproduction related to internal concentrations was 184 (61–301) mg La/kg dry body weight. A risk assessment based on the available toxicity for soil invertebrates, bacteria and plants resulted in an HC5 of approx. 50 mg La/kg dry soil, suggesting that La may affect soil ecosystems at concentrations slightly above natural background levels (6.6–50 mg La/kg dry soil) in non-polluted soils.

KW - Bioaccumulation

KW - Bioavailability

KW - Lanthanum

KW - Risk assessment

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