Concentrations of REEs, Th and U in river waters collected in Japan

Uchida, Shunsuke; Tagami, Keiko; Tabei, Ken; Hirai, Ikuko

doi:10.1016/j.jallcom.2004.12.104

Cited by 19 publications

(9 citation statements)

References 10 publications

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“…The geometric mean concentrations of LREEs (from La to Sm) are 0.35-5.13 ng/m 3 , 25.3-232.9 ng/l and 31.7-308.9 ng/l in TSP, rain and river waters, respectively, whereas those of HREEs (from Gd to Lu) are 0.02-0.32 ng/m 3 , 20.8-35.9 ng/l and 12.5-54.9 ng/l, respectively. These values of river waters are similar to the world average [6] and the values in Japanese rivers [7]. The concentrations of La and Yb are inversely related to pH [4], while less sensitive to [Na + Ca] (Fig.…”

Section: Resultssupporting

confidence: 79%

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Seasonal and spatial variations of rare earth elements in rainwaters, river waters and total suspended particles in air in South Korea

Ryu

Lee

et al. 2007

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 79%

“…The REE concentrations of 5 world's major rivers and 15 Japanese rivers have been reported in the previous literatures [6,7]. The REE abundance patterns of river waters and its implications on weathering processes were mainly reported in their studies.…”

Section: Introductionmentioning

confidence: 99%

Seasonal and spatial variations of rare earth elements in rainwaters, river waters and total suspended particles in air in South Korea

Ryu

Lee

et al. 2007

Journal of Alloys and Compounds

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“…However, these levels exhibit substantial variations in different streams and rivers. For example, the concentrations of REE in about 500 circumneutral pH stream waters of Eastern Canada varied from <0.005 to 11.540 μg/L, with an average of 0.253 μg/L (Leybourne and Johannesson, 2008) whereas in 15 major rivers of Japan these were somewhat higher ranging from 0.5 to 20 μg/L, apart from La, Ce, and Nd for which the concentrations were 80-200 μg/L (Uchida et al, 2006). For comparison, the concentrations of REE in the oceanic water vary from one tenth to a few tens ng/L (Dubinin, 2004).…”

Section: Aqueous Systemsmentioning

confidence: 99%

The Characteristics, Occurrence, and Geochemical Behavior of Rare Earth Elements in the Environment: A Review

Migaszewski

Gałuszka

2014

Critical Reviews in Environmental Science and Technology

329

177

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The increasing number of rare earth elements (REEs) studies in the past decade has been induced by their wider applications in industry, including electronics and high technology. This review presents the brief characteristics of REE, their occurrence in abiotic and biotic systems, and their possible detrimental effects on the environmental quality and human health. This also outlines the REE behavior in different geochemical interactions and the potential for tracing anthropogenic pollution sources.

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“…Currently, REEs are considered "technology critical elements" (TCE), and efforts have been undertaken to better address the issues of sustainable resource management, with a special emphasis on their environmental fate and toxicity (González et al 2014;Haque et al 2014;Nuss and Blengini 2018). REEs are usually detected in the ng L−1 to a few µg L−1 range inmost freshwater bodies, with substantial variations up to 200 µg L−1 reported for rivers in Japan (Migaszewski and Gałuszka 2015;Uchida et al 2006). They may form hardly soluble hydroxides (i.e.…”

Section: Introductionmentioning

confidence: 99%

Not merely noxious? Time-dependent hormesis and differential toxic effects systematically induced by rare earth elements in Escherichia coli

Técher

Grosjean

Sohm

et al. 2019

Environ Sci Pollut Res

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Progressive rare earth element (REE) enrichment in aquatic environments worldwide and their resulting anthropogenic anomalies have highlighted the need for a better understanding of their biological effects, with a special emphasis on microbial cells since they play a crucial role in good ecosystem functioning. Therefore, the primary aim of this work was to achieve simultaneous characterization of the 16 REE toxicity effects on the growth kinetics of the commonly found Gram-negative bacterium E. coli (BW25113 strain). Bacterial growth curve modelling showed hormetic effects in the presence of REEs, while EC50 determination (in the mid-log phase) indicated that the four HREEs from Er to Lu in addition to Y were the most toxic metals (EC50 in the range of 8.3 to 3 µM), just after Sc (EC50 of 1.1 µM). Additional subcellular parameter assessment revealed cell membrane lipid peroxidation as well as enhanced membrane depolarization and permeability in the presence of La, Gd, or Yb as representatives of LREEs and HREEs. These subcellular effects appeared to be more intense with Gd and Yb compared with La-exposed cells, in relation to the overall higher toxicity potential reported for HREEs on bacterial growth. Also, the cellular ATP production decreased after REE exposure at their EC50. Finally, these results emphasize the importance of growth kinetic consideration as well as the complexity of REE biological effect mechanisms towards bacteria.

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Concentrations of REEs, Th and U in river waters collected in Japan

Cited by 19 publications

References 10 publications

Seasonal and spatial variations of rare earth elements in rainwaters, river waters and total suspended particles in air in South Korea

Seasonal and spatial variations of rare earth elements in rainwaters, river waters and total suspended particles in air in South Korea

The Characteristics, Occurrence, and Geochemical Behavior of Rare Earth Elements in the Environment: A Review

Not merely noxious? Time-dependent hormesis and differential toxic effects systematically induced by rare earth elements in Escherichia coli

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