Assessing comparative terrestrial ecotoxicity of Cd, Co, Cu, Ni, Pb, and Zn: The influence of aging and emission source

Owsianiak, Mikołaj; Holm, Peter E.; Fantke, Peter; Christiansen, Karen S.; Borggaard, Ole K.; Hauschild, Michael Zwicky

doi:10.1016/j.envpol.2015.07.025

Cited by 44 publications

(64 citation statements)

References 61 publications

(22 reference statements)

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“…Recognized priority issues thus include: 1) exposure of marine biota (Dong et al 2016) and terrestrial organisms (Owsianiak et al 2015;Plouffe et al 2016;Tromson et al 2017); 2) pollinator exposure and ecotoxicity of pesticides (Crenna et al 2017); 3) ecosystem impacts via secondary poisoning (Elliott et al 1997;Nendza et al 1997;Hop et al 2002); 4) using ecotoxicological endpoint data and metrics from up-to-date and comprehensive data sources Saouter et al 2017aSaouter et al , 2017bWender et al 2018) covering substance classes that are currently not considered in LCIA, such as inorganic salts (M€ uller and Fantke 2017); 5) combined exposure to multiple chemicals (de Zwart and Posthuma 2005;Backhaus et al 2013); 6) sediment-dwelling organisms (Pu et al 2017); 7) essentiality of certain metals at concentrations below toxicologically relevant levels (Stumm and Morgan 1995;Chapman and Wang 2000;Chapman et al 2003); and 8) evolution in the bioavailability of metals and other persistent substances (Lebailly et al 2014;Fantke et al 2015;Shimako et al 2017). Our proposed review also considers the availability of the required substance data and gives priority to approaches that are consistent with data and scientific approaches used in other contexts, such as regulatory risk assessment.…”

Section: The Need For Global Guidance and Harmonizationmentioning

confidence: 99%

Toward harmonizing ecotoxicity characterization in life cycle impact assessment

Fantke

Aurisano

Bare

et al. 2018

Enviro Toxic and Chemistry

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Ecosystem quality is an important area of protection in life cycle impact assessment (LCIA). Chemical pollution has adverse impacts on ecosystems on a global scale. To improve methods for assessing ecosystem impacts, the Life Cycle Initiative hosted by the United Nations Environment Programme established a task force to evaluate the state-of-the-science in modeling chemical exposure of organisms and the resulting ecotoxicological effects for use in LCIA. The outcome of the task force work will be global guidance and harmonization by recommending changes to the existing practice of exposure and effect modeling in ecotoxicity characterization. These changes will reflect the current science and ensure the stability of recommended practice. Recommendations must work within the needs of LCIA in terms of 1) operating on information from any inventory reporting chemical emissions with limited spatiotemporal information, 2) applying best estimates rather than conservative assumptions to ensure unbiased comparison with results for other impact categories, and 3) yielding results that are additive across substances and life cycle stages and that will allow a quantitative expression of damage to the exposed ecosystem. We describe the current framework and discuss research questions identified in a roadmap. Primary research questions relate to the approach toward ecotoxicological effect assessment, the need to clarify the method's scope and interpretation of its results, the need to consider additional environmental compartments and impact pathways, and the relevance of effect metrics other than the currently applied geometric mean of toxicity effect data across species. Because they often dominate ecotoxicity results in LCIA, we give metals a special focus, including consideration of their possible essentiality and changes in environmental bioavailability. We conclude with a summary of key questions along with preliminary recommendations to address them as well as open questions that require additional research efforts. Environ Toxicol Chem 2018;37:2955-2971. © 2018 SETAC.

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Section: The Need For Global Guidance and Harmonizationmentioning

confidence: 99%

Toward harmonizing ecotoxicity characterization in life cycle impact assessment

Fantke

Aurisano

Bare

et al. 2018

Enviro Toxic and Chemistry

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“…Also, if Cd aged due to precipitation/nucleation, Cd will be reversed and mobilized when soil acidification; if Cd aged due to micropore diffusion, the diffused Cd will also be reversed back depending time and Cd concentration/activity gradient. Furthermore, the role of aging for risk assessment and environment criteria of Cd in soil was no longer disregarded [32,57,58]. Also, the semi-mechanistic models are more robust than the aging factor, and they can be used to scale ecotoxicological data generated in short term studies to longer aging times, such as from 14 days to 1 year.…”

Section: Practical Implicationsmentioning

confidence: 99%

“…In the present study, the EDTA-extractable Cd was most likely controlled by the processes of diffusion and precipitation/nucleation, which means soil pH and aging time are important factors to affect the Cd extractability although OC have little effect. In practice, increasing soil pH-such as liming-may promote the processes of diffusion and precipitation/nucleation, meanwhile immobilizing Cd probably because of formation of poorly-ordered oxides and/or carbonates [57]. Also, if Cd aged due to precipitation/nucleation, Cd will be reversed and mobilized when soil acidification; if Cd aged due to micropore diffusion, the diffused Cd will also be reversed back depending time and Cd concentration/activity gradient.…”

Section: Practical Implicationsmentioning

confidence: 99%

“…For water-soluble Cd added to soil, the aging will lead to a decrease in EDTA-extractable Cd in soil from 0.44% to 27.95%. However, for airborne Cd from anthropogenic sources, the reactive fraction was not statistically significant between spiked soils aged for 0.5-2.5 years [57]. So that when sustainability for agricultural soils is assessed, the difference sources of Cd entering into soils and reversion processes of aging should be considered in case that sustainability assessment for agricultural soils will be underand over-estimated.…”

Section: Practical Implicationsmentioning

confidence: 99%

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Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

et al. 2018

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Ethylenediaminetetraacetic acid (EDTA) is known to be a chelating agent and has been widely used for estimating the total extractable metals in soil. The effect of aging on EDTA-extractable cadmium (Cd) was investigated in five different soils at three Cd concentrations incubated for 180 days. The EDTA-extractable Cd rapidly decreased after incubated during 30-60 days, followed by slow processes, and for 90 days the EDTA-extractable Cd tended to be stable. The decrease in EDTA-extractable Cd may be due to precipitation/nucleation processes, diffusion of Cd into the micropores/mesopores, and occlusion within organic matter in soils. A semi-mechanistic model to predict the extractability of Cd during incubation, based on processes of Cd precipitation/nucleation, diffusion, and occlusion within organic matter, was developed and calibrated. The results showed that the processes of micropore/mesopore diffusion were predominant processes affecting the extractability of Cd added to soils, and were slow. However, the proportions of the processes of precipitation/nucleation and occlusion within organic matter to the non-EDTA-extractable Cd added to soils were only 0.03-21.0% and 0.41-6.95%, respectively. The measured EDTA-extractable Cd from incubated soils were in good agreement with those predicted by the semi-mechanistic model (R 2 = 0.829). The results also indicated that soil pH, organic matter, and incubation time were the most important factors affecting Cd aging.

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“…The presence of these metals has a potentially damaging effect on human and other biological systems because heavy metals are not biodegradable and tend to accumulate in living organisms [1].…”

Section: Introductionmentioning

confidence: 99%

A Case Study of Landfill Leachate Using Coal Bottom Ash for the Removal of Cd2+, Zn2+ and Ni2+

Ayala

Fernández

2016

Metals

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Abstract:The removal of Cd 2+ , Zn 2+ and Ni 2+ by coal bottom ash has been investigated. In single metal system, metal uptake was studied in batch adsorption experiments as a function of pH (2-3), contact time (5-180 min), initial metal concentration (50-400 mg/L), adsorbent concentration (5-40 g/L), particle size, and ionic strength (0-1 M NaCl). Removal percentages of metals ions increased with increasing pH and dosage. Removal efficiency at lower concentrations was greater than at higher values. The maximum amount of metal ion adsorbed in milligrams per gram was 35.4, 35.1 and 34.6 mg/g for Zn 2+ , Cd 2+ and Ni 2+ , respectively, starting out from an initial solution at pH 3. Simultaneous removal of Zn 2+ , Cd 2+ and Ni 2+ ions from ternary systems was also investigated and compared with that from single systems. Cd 2+ uptake was significantly affected by the presence of competing ions at pH 2. The results obtained in the tests with landfill leachate showed that bottom ash is effective in simultaneously removing several heavy metals such as Ni, Zn, Cd, As, Mn, Cu, Co, Se, Hg, Ag, and Pb.

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Assessing comparative terrestrial ecotoxicity of Cd, Co, Cu, Ni, Pb, and Zn: The influence of aging and emission source

Cited by 44 publications

References 61 publications

Toward harmonizing ecotoxicity characterization in life cycle impact assessment

Toward harmonizing ecotoxicity characterization in life cycle impact assessment

Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

A Case Study of Landfill Leachate Using Coal Bottom Ash for the Removal of Cd2+, Zn2+ and Ni2+

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