Effect of organic complexation on the toxicity of Cu to the earthworm Eisenia fetida

R. E. Arnold; M. E. Hodson; S. Comber

doi:10.1016/j.apgeochem.2007.05.008

Effect of organic complexation on the toxicity of Cu to the earthworm Eisenia fetida

R. E. Arnold, M. E. Hodson, S. Comber

Environment and Geography

Research output: Contribution to journal › Article › peer-review

Abstract

The relationship between Cu speciation in solution and mortality and tissue Cu concentrations in Eisenia fetida was investigated. E. fetida were exposed to solutions containing 0.009, 0.049 and 0.125 mg Cu L-1 and 0, 0.15, 0.35 and 50 mg EDTA L-1. Mortalities of 100, 60, 50 and 25% were recorded in the 0.125 mg Cu L-1 solutions containing 0, 0.15, 0.35 and 50 mg EDTA L^-1, respectively. Similarly tissue body burden decreased with increasing EDTA concentration. Complexation capacity of the solution increased with EDTA concentration. In the 0.125 mg Cu L^-1 solution labile Cu concentration decreased with increasing EDTA concentration. These trends are attributed to complexation of free Cu ions with EDTA molecules, and the non-bioavailable nature of the resultant Cu-EDTA complex. © 2007 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	2397-2405
Number of pages	9
Journal	Applied Geochemistry
Volume	22
Issue number	11
DOIs	https://doi.org/10.1016/j.apgeochem.2007.05.008
Publication status	Published - Nov 2007

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10.1016/j.apgeochem.2007.05.008

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@article{35752f841097474fa48e719ed9277970,

title = "Effect of organic complexation on the toxicity of Cu to the earthworm Eisenia fetida",

abstract = "The relationship between Cu speciation in solution and mortality and tissue Cu concentrations in Eisenia fetida was investigated. E. fetida were exposed to solutions containing 0.009, 0.049 and 0.125 mg Cu L-1 and 0, 0.15, 0.35 and 50 mg EDTA L-1. Mortalities of 100, 60, 50 and 25% were recorded in the 0.125 mg Cu L-1 solutions containing 0, 0.15, 0.35 and 50 mg EDTA L-1, respectively. Similarly tissue body burden decreased with increasing EDTA concentration. Complexation capacity of the solution increased with EDTA concentration. In the 0.125 mg Cu L-1 solution labile Cu concentration decreased with increasing EDTA concentration. These trends are attributed to complexation of free Cu ions with EDTA molecules, and the non-bioavailable nature of the resultant Cu-EDTA complex. {\textcopyright} 2007 Elsevier Ltd. All rights reserved.",

author = "Arnold, {R. E.} and Hodson, {M. E.} and S. Comber",

note = "{\textcopyright}2007, Elsevier Ltd.",

year = "2007",

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T1 - Effect of organic complexation on the toxicity of Cu to the earthworm Eisenia fetida

AU - Arnold, R. E.

AU - Hodson, M. E.

AU - Comber, S.

PY - 2007/11

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N2 - The relationship between Cu speciation in solution and mortality and tissue Cu concentrations in Eisenia fetida was investigated. E. fetida were exposed to solutions containing 0.009, 0.049 and 0.125 mg Cu L-1 and 0, 0.15, 0.35 and 50 mg EDTA L-1. Mortalities of 100, 60, 50 and 25% were recorded in the 0.125 mg Cu L-1 solutions containing 0, 0.15, 0.35 and 50 mg EDTA L-1, respectively. Similarly tissue body burden decreased with increasing EDTA concentration. Complexation capacity of the solution increased with EDTA concentration. In the 0.125 mg Cu L-1 solution labile Cu concentration decreased with increasing EDTA concentration. These trends are attributed to complexation of free Cu ions with EDTA molecules, and the non-bioavailable nature of the resultant Cu-EDTA complex. © 2007 Elsevier Ltd. All rights reserved.

AB - The relationship between Cu speciation in solution and mortality and tissue Cu concentrations in Eisenia fetida was investigated. E. fetida were exposed to solutions containing 0.009, 0.049 and 0.125 mg Cu L-1 and 0, 0.15, 0.35 and 50 mg EDTA L-1. Mortalities of 100, 60, 50 and 25% were recorded in the 0.125 mg Cu L-1 solutions containing 0, 0.15, 0.35 and 50 mg EDTA L-1, respectively. Similarly tissue body burden decreased with increasing EDTA concentration. Complexation capacity of the solution increased with EDTA concentration. In the 0.125 mg Cu L-1 solution labile Cu concentration decreased with increasing EDTA concentration. These trends are attributed to complexation of free Cu ions with EDTA molecules, and the non-bioavailable nature of the resultant Cu-EDTA complex. © 2007 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.apgeochem.2007.05.008

DO - 10.1016/j.apgeochem.2007.05.008

M3 - Article

SN - 0883-2927

VL - 22

SP - 2397

EP - 2405

JO - Applied Geochemistry

JF - Applied Geochemistry

IS - 11

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