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Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

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Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus. / Langdon, Caroline J.; Meharg, Andrew A.; Feldmann, J. et al.
In: Soil Biology and Biochemistry, Vol. 4, No. 4, 2002, p. 603-608.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Langdon, CJ, Meharg, AA, Feldmann, J, Balgar, T, Charnock, J, Farqhar, M, Piearce, TG, Semple, KT & Cotter-Howells, J 2002, 'Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus.', Soil Biology and Biochemistry, vol. 4, no. 4, pp. 603-608. https://doi.org/10.1039/b201366p

APA

Langdon, C. J., Meharg, A. A., Feldmann, J., Balgar, T., Charnock, J., Farqhar, M., Piearce, T. G., Semple, K. T., & Cotter-Howells, J. (2002). Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus. Soil Biology and Biochemistry, 4(4), 603-608. https://doi.org/10.1039/b201366p

Vancouver

Langdon CJ, Meharg AA, Feldmann J, Balgar T, Charnock J, Farqhar M et al. Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus. Soil Biology and Biochemistry. 2002;4(4):603-608. doi: 10.1039/b201366p

Author

Langdon, Caroline J. ; Meharg, Andrew A. ; Feldmann, J. et al. / Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus. In: Soil Biology and Biochemistry. 2002 ; Vol. 4, No. 4. pp. 603-608.

Bibtex

@article{a2cbb1cf664e4a0c8cbf94bb4dac83a4,
title = "Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus.",
abstract = "In this study, the earthworm, Aporrectodea longa, was used as a model soil organism to assess the impact of ageing upon the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil. The objectives were to characterise the temporal changes in the extractability/availability of PAHs amended into soil and to examine how the decline in PAH availability to earthworms related to the decline in chemical availability as determined by solvent extraction. Two PAHs (pyrene and benz[a]anthracene) were spiked into sterilised soil and aged in microcosms for up to 240 days. The earthworms were incubated in the PAH spiked soils, at 0, 30, 60, and 240 days after spiking, for a period of 28 days. After exposure, the earthworm-PAH tissue concentrations were measured. Change in chemical extractability of the soil-PAHs was monitored throughout the incubation by employing a sequential extraction technique with two solvents of different polarities. The chemical extractability and bioavailability of both PAHs reduced with increased soil contact time. Pyrene and benz[a]anthracene both displayed biphasic profiles in chemical extractability and earthworm bioavailability, but the rates and extents differed. Thus, chemical extractability does not accurately predict the bioavailable fraction of PAHs in the soil and does not agree with work reported earlier using Eisenia fetida, hence it follows that the earthworm species may be important in determining the bioaccumulation of soil-associated PAHs. Further, the ecological niche occupied by the experimental species will influence feeding behaviour and thus, perhaps, the degree of accumulation. Therefore, the use of the manure earthworm, E. fetida, in screening of contaminated soils (as recommended by the USEPA) may underestimate toxicity or accumulatory potential.",
keywords = "Ageing, Extraction, Availability, Polycyclic aromatic hydrocarbons, Earthworms",
author = "Langdon, {Caroline J.} and Meharg, {Andrew A.} and J. Feldmann and T. Balgar and John Charnock and Morag Farqhar and Piearce, {Trevor G.} and Semple, {Kirk T.} and J. Cotter-Howells",
year = "2002",
doi = "10.1039/b201366p",
language = "English",
volume = "4",
pages = "603--608",
journal = "Soil Biology and Biochemistry",
issn = "0038-0717",
publisher = "Elsevier Ltd",
number = "4",

}

RIS

TY - JOUR

T1 - Arsenic-speciation in arsenate-resistant and non-restistant populations of the earthworm Lumbricus rubellus.

AU - Langdon, Caroline J.

AU - Meharg, Andrew A.

AU - Feldmann, J.

AU - Balgar, T.

AU - Charnock, John

AU - Farqhar, Morag

AU - Piearce, Trevor G.

AU - Semple, Kirk T.

AU - Cotter-Howells, J.

PY - 2002

Y1 - 2002

N2 - In this study, the earthworm, Aporrectodea longa, was used as a model soil organism to assess the impact of ageing upon the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil. The objectives were to characterise the temporal changes in the extractability/availability of PAHs amended into soil and to examine how the decline in PAH availability to earthworms related to the decline in chemical availability as determined by solvent extraction. Two PAHs (pyrene and benz[a]anthracene) were spiked into sterilised soil and aged in microcosms for up to 240 days. The earthworms were incubated in the PAH spiked soils, at 0, 30, 60, and 240 days after spiking, for a period of 28 days. After exposure, the earthworm-PAH tissue concentrations were measured. Change in chemical extractability of the soil-PAHs was monitored throughout the incubation by employing a sequential extraction technique with two solvents of different polarities. The chemical extractability and bioavailability of both PAHs reduced with increased soil contact time. Pyrene and benz[a]anthracene both displayed biphasic profiles in chemical extractability and earthworm bioavailability, but the rates and extents differed. Thus, chemical extractability does not accurately predict the bioavailable fraction of PAHs in the soil and does not agree with work reported earlier using Eisenia fetida, hence it follows that the earthworm species may be important in determining the bioaccumulation of soil-associated PAHs. Further, the ecological niche occupied by the experimental species will influence feeding behaviour and thus, perhaps, the degree of accumulation. Therefore, the use of the manure earthworm, E. fetida, in screening of contaminated soils (as recommended by the USEPA) may underestimate toxicity or accumulatory potential.

AB - In this study, the earthworm, Aporrectodea longa, was used as a model soil organism to assess the impact of ageing upon the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil. The objectives were to characterise the temporal changes in the extractability/availability of PAHs amended into soil and to examine how the decline in PAH availability to earthworms related to the decline in chemical availability as determined by solvent extraction. Two PAHs (pyrene and benz[a]anthracene) were spiked into sterilised soil and aged in microcosms for up to 240 days. The earthworms were incubated in the PAH spiked soils, at 0, 30, 60, and 240 days after spiking, for a period of 28 days. After exposure, the earthworm-PAH tissue concentrations were measured. Change in chemical extractability of the soil-PAHs was monitored throughout the incubation by employing a sequential extraction technique with two solvents of different polarities. The chemical extractability and bioavailability of both PAHs reduced with increased soil contact time. Pyrene and benz[a]anthracene both displayed biphasic profiles in chemical extractability and earthworm bioavailability, but the rates and extents differed. Thus, chemical extractability does not accurately predict the bioavailable fraction of PAHs in the soil and does not agree with work reported earlier using Eisenia fetida, hence it follows that the earthworm species may be important in determining the bioaccumulation of soil-associated PAHs. Further, the ecological niche occupied by the experimental species will influence feeding behaviour and thus, perhaps, the degree of accumulation. Therefore, the use of the manure earthworm, E. fetida, in screening of contaminated soils (as recommended by the USEPA) may underestimate toxicity or accumulatory potential.

KW - Ageing

KW - Extraction

KW - Availability

KW - Polycyclic aromatic hydrocarbons

KW - Earthworms

U2 - 10.1039/b201366p

DO - 10.1039/b201366p

M3 - Journal article

VL - 4

SP - 603

EP - 608

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

SN - 0038-0717

IS - 4

ER -