A preliminary survey of anthropogenic gadolinium in water and sediment of a constructed wetland

Altomare, Anthony; Young, Nicholas A.; Beazley, Melanie J.

doi:10.1016/j.jenvman.2019.109897

Cited by 21 publications

(13 citation statements)

References 23 publications

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“…Such findings may be related with previous studies conducted by Verplanck et al (2005) on Gd 3+ speciation in water solution, which reported that the metal ions tend to complexate with both carbonate and phosphate anions, if present in high concentrations, once sinking of REEs-phosphate aggregates could be considered as a possible process for Gd inorganic sedimentation (Byrne et al, 1996). Thus, the amount of phosphorus entering the OEW could favour the Gd precipitation through complexation reactions, even if no correlation between phosphorus and Gd has been found (Altomare et al, 2020). Differences in Gd concentration in sediments have been noted according to changes in sediment composition, since samples containing high quantities of sandy material had an inferior amount of anthropogenic Gd (Altomare et al, 2020).…”

Section: Gadolinium Chemical Speciationsupporting

confidence: 74%

“…These data confirmed the absence of any form of degradation of the Gd complexes along the river streams. Altomare et al (2020) reported Gd concentrations above the geogenic levels (commonly named anomalies) found in the environment in the Orlando Easterly Wetlands (OEW) sediments, detecting an average ratio of anthropogenic over geogenic Gd (Gd Ant /Gd Geo ) of 5.34. Such findings may be related with previous studies conducted by Verplanck et al (2005) on Gd 3+ speciation in water solution, which reported that the metal ions tend to complexate with both carbonate and phosphate anions, if present in high concentrations, once sinking of REEs-phosphate aggregates could be considered as a possible process for Gd inorganic sedimentation (Byrne et al, 1996).…”

Section: Gadolinium Chemical Speciationmentioning

confidence: 99%

“…Thus, the amount of phosphorus entering the OEW could favour the Gd precipitation through complexation reactions, even if no correlation between phosphorus and Gd has been found (Altomare et al, 2020). Differences in Gd concentration in sediments have been noted according to changes in sediment composition, since samples containing high quantities of sandy material had an inferior amount of anthropogenic Gd (Altomare et al, 2020). On the other hand, samples with greater quantities of total organic carbon, had higher concentrations of anthropogenic Gd.…”

Section: Gadolinium Chemical Speciationmentioning

confidence: 99%

See 2 more Smart Citations

What do we know about the ecotoxicological implications of the rare earth element gadolinium in aquatic ecosystems?

Trapasso

Chiesa

Freitas

et al. 2021

Science of The Total Environment

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More research on gadolinium (Gd) occurrence in freshwater than marine environments • Few publications on the accumulation and effects of Gd in aquatic invertebrates • Higher diversity of freshwater species than marine species in Gd impacts studies. • Aquatic invertebrates differently bioaccumulate Gd according to its speciation. • Gd causes alterations at different biological levels in aquatic invertebrates.

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Section: Gadolinium Chemical Speciationsupporting

confidence: 74%

Section: Gadolinium Chemical Speciationmentioning

confidence: 99%

Section: Gadolinium Chemical Speciationmentioning

confidence: 99%

See 1 more Smart Citation

What do we know about the ecotoxicological implications of the rare earth element gadolinium in aquatic ecosystems?

Trapasso

Chiesa

Freitas

et al. 2021

Science of The Total Environment

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“…Based on the protocol outlined by Bau and Duski 20 using inductively coupled plasma mass spectrometry (ICP‐MS), groups studying densely populated and industrialized areas in Australia, 22,23 the USA, 24,25 Czech, 26 Sweden, 20 South Korea, 27 Germany, 28,29 France, 30,31 England, 29 Japan, 32,33 Brazil, 34 China, 35 Turkey, 36 and West Africa 37 have shown Gd anomalies in their rivers, lakes, and oceans. Groups 20,23,31,38–43 have compared samples from waters upstream and downstream of WWTPs and confirmed that Gd anomalies originate in WWTP effluents and are therefore of anthropogenic origin.…”

Section: Quantification Of Gd Contaminationmentioning

confidence: 99%

Lifecycle of Gadolinium‐Based Contrast Agents

Liu

2020

Magnetic Resonance Imaging

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“…In soils and sediments, Nd concentrations are, in most cases, above the ppm level (Freslon et al, 2014 and references therein), making anthropogenic Nd contamination more difficult to detect by the use of the REEs concentration only (e.g., Olmez et al, 1991). Recent studies have focused on polluted river sediments and soils, and only the presence of anthropogenic Gd has been demonstrated by the measurement of REE concentrations alone (da Silva et al, 2018;Altomare et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Industrially Purified Nd Materials Identified by Distinct Mass-Dependent Isotopic Composition

Bothamy¹,

Galy²

2021

Front. Environ. Chem.

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Rare earth elements (REEs) are considered emerging anthropogenic pollutants. Anthropogenic lanthanum, cerium, samarium, and gadolinium alone, or excess of all the REEs have already been reported in the environment. In addition, it is only a matter of time for neodymium (Nd) of anthropogenic origin to be reported disseminated in the environment, given its growing demand for new technologies and its use in permanent magnets of wind turbine. So far, only in a few cases was the addition of anthropogenic Nd detected in soils and sediments by the measurements of REE concentrations. For this reason, we propose to use the Nd isotopic composition to help the distinction of pollution. The isotopic tracing of Nd using variations in the abundance of 143Nd from the radioactive decay of 147Sm (Nd-radiogenic composition) is one option. Here, we expand the Nd isotopic fingerprinting by the investigation of the stable Nd isotopic composition expressed as δxNd, the relative permil (%0) deviation from the isotopic composition of the pure Nd JNdi-1 reference standard. The measurement of δxNd used a MC-ICPMS (multi-collector inductively coupled plasma mass spectrometry) with sample-standard bracketing technique, allowing the determination of precise and accurate Nd isotopic variations. Our results show that Nd-magnets (Neo) and man-made purified Nd materials are not significantly different on average (respectively, δ148Nd of −0.105 ± 0.023 and −0.120 ± 0.141%0). More importantly, they are different from terrestrial rocks (δ148Nd of −0.051 ± 0.031%0). Moreover, the Nd-radiogenic composition of Neo can be highly variable, even when they come from a single supplier. In addition, the study of all Nd stable isotopic compositions demonstrates that irrespective of their natural origin (witnessed by their Nd-radiogenic composition), all Nd from rocks and man-made materials are related by mass-dependent isotopic fractionation laws. We also have defined a parameter, the Δ148−150Nd′, allowing the distinction of thermodynamic isotopic fractionation (the Δ148−150Nd′ is invariant) from kinetic isotopic fractionation (the Δ148−150Nd′ is negatively correlated with the δ148Nd). Such covariation is observed for anthropogenic materials that could be seen as small deficit in 150Nd (around 5 ppm/%0/amu), but too small to be consistent with nuclear field effect. On the other hand, the anthropogenic material defines a covariation in the Δ148−150Nd'–δ148Nd space in full agreement with the theoretical expectation from mass-dependent kinetic isotopic fractionation. The mass-dependent fractionation of Nd by chromatographic separation is also consistent with a kinetic isotopic fractionation. The purification of Nd from other light REEs by industrial processes involves chromatographic separation and, therefore, is likely to produce anthropogenic Nd with low values for δ148Nd associated with high values for Δ148−150Nd′. Both are resolvable with current MC-ICPMS technology and could be useful to trace incoming anthropogenic pollution in the environment. In soils, the combination of low values for δ148Nd with high values for Δ148−150Nd′ is likely to be an unambiguous pollution signal from the degradation in the environment of Neo or other industrial products, especially if this is associated with an Nd-radiogenic composition inconsistent with the surrounding rocks and soils. In contrast, the industrial residue of Nd purification could be characterized by high δ148Nd with low values for Δ148−150Nd′, and the leak or the discharge of such residue could also be unambiguously distinguished.

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A preliminary survey of anthropogenic gadolinium in water and sediment of a constructed wetland

Cited by 21 publications

References 23 publications

What do we know about the ecotoxicological implications of the rare earth element gadolinium in aquatic ecosystems?

What do we know about the ecotoxicological implications of the rare earth element gadolinium in aquatic ecosystems?

Lifecycle of Gadolinium‐Based Contrast Agents

Industrially Purified Nd Materials Identified by Distinct Mass-Dependent Isotopic Composition

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