Reliability of the reported stability constant for CePO40, as related to Ce redox formulations in seawater

Liu, Y.-G.; Miah, Md. Rezwan; Schmitt, R. A.

doi:10.1016/0016-7037(89)90082-3

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…Our Ce anomaly data are presented in Table 1. Although the data are some what scattered, the general trend is similar to that reported by previous workers for surface waters (Liu et al 1989;Goldstein and Jacobsen 1988;Tricca et al 1999;Elderfield et al 1990;Dia et al 2000) that always show negative Ce anomalies (less than one). So the negative Ce anomaly is strongly pH-dependent in alkaline rivers.…”

Section: Ce Eu Anomaliessupporting

confidence: 86%

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Dissolved rare earth elements in river waters draining karst terrains in Guizhou Province, China

Han

Liu

2006

Aquat Geochem

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Winter seasonal concentrations of dissolved rare earth elements (REE) of two major river systems (the Wujiang River system and the Yuanjiang River system) in karst-dominated regions in winter were measured by using a method involving solvent extraction and back-extraction and subsequent ICP-MS measurements. The dissolved REE concentrations in the rivers and their tributaries are lower than those in most of the large rivers in the world. High pH and high cation (i.e., Na + + Ca 2+ ) concentrations of the rivers are the most important factors controlling the concentrations of dissolved REE in the river water.The dissolved load (<0.22 lm) REE distribution patterns of high-pH river waters are very different from those of low-pH river waters. The shale (PAAS)-normalized REE patterns for the dissolved loads are characterized by light REEenrichment and heavy REE-enrichment. Water in the upper reaches of the Wujiang River generally shows light REE-enriched patterns, while that in the middle and lower reaches generally shows heavy REE-enriched patterns. The Yuanjiang River is heavy REE enriched with respect to the light REE in the same samples. Water of the Wuyanghe River draining dolomite-dominated terrains has the highest heavy REE-enrichment. Most river water samples show the shale-normalized REE patterns with negative Ce and Eu anomalies, especially water from Wuyanghe River. Y/Ho ratios show that the water/particle interaction might have played an important role in fractionation between HREE and LREE.

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Section: Ce Eu Anomaliessupporting

confidence: 86%

“…Although there are uncertainties pertaining to what controls aqueous Ce chemistry (Liu et al 1989;Elderfield et al 1990), we do consider that the oxidation of Ce 3+ is much more sensitive to pH than to pe (Elderfield and Sholkovitz 1987):…”

Section: Ce Eu Anomaliesmentioning

confidence: 99%

Dissolved rare earth elements in river waters draining karst terrains in Guizhou Province, China

Han

Liu

2006

Aquat Geochem

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“…and Ce 4? species (Elderfield and Sholkovitz 1987;Goldstein and Jacobsen 1988;Liu et al 1989;Dia et al 2000), the preferential removal of dissolved Ce(III) is ascribed to of redox reaction. In addition, the abiotic oxidation of Ce(III) on the surface of manganese oxides has also been reported from laboratory experiments in which synthetic minerals were used (Koeppenkastrop and De Carlo 1992;De Carlo et al 1998).…”

Section: Average Ree Pattern Of Dissolved Loadmentioning

confidence: 99%

Rare Earth Element Patterns in the Karst Terrains of Guizhou Province, China: Implication for Water/Particle Interaction

Han

Tang

et al. 2009

Aquat Geochem

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The authors determine the concentrations of dissolved (\0.22 lm) rare earth elements (REE) and suspended particulate matter (SPM) of typical karst rivers in Guizhou Province, China during the high-flow period. The concentrations of acid-soluble REE extracted from SPM using diluted hydrochloric acid are also obtained to investigate water/ particle interaction in the river water. The dissolved REE contents in the river water are extremely low in the rivers of the study. The dissolved REE distribution patterns normalized by the Post Archean Australia Shale (PAAS) in the karst rivers are not flat, show slight enrichment of heavy REE to light REE, and also have significant negative Ce and Eu anomalies. The acid-soluble REE appears to have similar distribution patterns as characterized by MREE enrichment and slight LREE depletion, with unremarkable Ce and Eu anomalies. The PAAS-normalized REE distribution patterns of SPM are flat with negative Eu anomalies. The contents and distribution patterns of REE in the SPM are closely related to the lithological character of the source rocks. The SPM contains almost all the REE produced in the process of surficial weathering. This demonstrates that particle-hosted REE are the most important form of REE occurrence. REE fractionation, which takes place during weathering and transport, leads to an obvious HREE enrichment in the dissolved loads relative to the SPM. Y/Ho ratio can be used to shed light on REE behaviors during water/particle interaction.

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Rare earth geochemistry in the dissolved, suspended and sedimentary loads in karstic rivers, Southwest China

Jiang

2011

Environ Earth Sci

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Reliability of the reported stability constant for CePO40, as related to Ce redox formulations in seawater

Cited by 7 publications

References 10 publications

Dissolved rare earth elements in river waters draining karst terrains in Guizhou Province, China

Dissolved rare earth elements in river waters draining karst terrains in Guizhou Province, China

Rare Earth Element Patterns in the Karst Terrains of Guizhou Province, China: Implication for Water/Particle Interaction

Rare earth geochemistry in the dissolved, suspended and sedimentary loads in karstic rivers, Southwest China

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