Variations in rare earth elements with environmental factors in lake surface sediments from 17 lakes in western China

Du, Dingding; Chen, Liuqin; Bai, Yang; Hu, Hai-Ping

doi:10.1007/s11629-020-6040-4

Cited by 11 publications

(3 citation statements)

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“…between REE and chemical weatheringIn general, REE concentrations tend to increase with increasing intensity of chemical weathering(Du et al 2021). Remarkably high REE corresponding to high CIA in the sediments from Kerala agree with the above statement.…”

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confidence: 77%

“…Placer minerals dominated by monazite, zircon, garnet, sillimanite, ilmenite and mica have been reported abundantly in the coastal sediments of south Kerala(Mallik et al 1987). Therefore, REE concentrations in silt fractions of southern Kerala are controlled by weathering -resistant minerals like heavy minerals which hosts high REE and heavy metal content(Du et al 2021). The clay fractions of sediment usually show high concentrations of total REE as these fractions contain clay minerals with high surface area and high adsorption capacity for REE.…”

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confidence: 99%

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Controls on the distribution and fractionation of rare earth elements in recent sediments from the rivers along the west coast of India

Babu,

Rao,

Mohan

2024

Preprint

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The sediments of 90 rivers from 5 states along western India were analysed for their chemistry. The major element ratios of sediments suggest lateritic soils in Kerala, lateritic soils admixed with particulates weathered from Fe-Mn ores in Karnataka and Goa and, non-lateritic soils in Maharashtra and Gujarat. The sediments from Archean-Proterozoic (A-P) terrain are strongly weathered, while those from Deccan Traps (DT) terrain are intermediate to strongly weathered. The ∑REE of sediments from Kerala is much higher than in other states. It shows strong correlation with oxides of Fe, Mn and P from A-P terrain and Al, Fe and Ti from DT terrain and, strong correlation with heavy metals from both terrains. The low Sm/Nd and Y/Ho ratios corresponding to high CIA and, high ratios corresponding to high and low CIA are typical. The PAAS-normalized REE shows LREE- and MREE-enriched patterns in the sediments of Kerala and MREE- and HREE-enriched pattern in other sediments. Distinct positive Ce anomaly occurs in the sediments of Karnataka, Goa and south Maharashtra. The Eu anomaly is negative in the silts of south Kerala and positive in other sediments. The primary sources for REEs are adsorbed REEs onto secondary mineral phases and clay minerals and, heavy minerals. The change in REE patterns is primarily related to the source rock composition. Fractionation of REEs is related to the intensity of chemical weathering, supply of REE and transport processes. The average REE composition of river sediments from peninsular India is more mafic than in UCC and World Rivers Average clay.

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confidence: 77%

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confidence: 99%

Controls on the distribution and fractionation of rare earth elements in recent sediments from the rivers along the west coast of India

Babu,

Rao,

Mohan

2024

Preprint

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“…It is known that a lot of substances from the catchment areas enter lakes located in the relief depressions of any landscape (Förstner&Westrich 2005). The chemical composition of water and sediments of lakes is predominantly determined by the composition of rocks and sedimentary formations of the area (Blyakharchuk et al 2020;Du et al 2021). In addition, the anthropogenic factors in uence the composition of water and sediments of the lakes themselves and the territories around them.…”

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confidence: 99%

Chemical Composition of Water and Sediments of Tundra Lakes as the Background Area of the North of Murmansk Region (Arctic)

Slukovskii,

Guzeva,

Malysheva

et al. 2023

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The article presents new data on the chemical composition of water and recent sediments of six small lakes located in the Natural Park “Rybachy and Sredny Peninsulas” (the Russian Arctic). The main hydrochemistry parameters, including pH, conductivity, alkalinity, the content of main ions (Ca, Mg, Na, K, HCO3, SO4, Cl), and trace elements were measured in the water of selected lakes. Furthermore, concentrations of heavy metals (Pb, Sb, Cd, Ni, Cu, and others) were estimated in the upper layers of recent sediments of the lakes. The integral index PLI, designed for geochemicalstudies of sediments, was calculated to determine the level of chemical pollution of the lakes. The results showed that, in general, the studied parameters did not exceed the background level. There was no serious impact of the Kola Mining and Metallurgical Company, which is situated several dozen kilometers to the west from the lakes. It was revealed that the studied lakes were less contaminated with heavy metals in comparison with the previously researched lakes of urban territories of the Russian Arctic zone. However, the analysis of distribution of concentrations of Ni, Cu, Pb revealed the influence of long-range atmospheric pollution on lakes of the Natural Park “Rybachy and Sredny Peninsulas”. The fractional analysis of the metals in the sediments showed that the elements were mainly associated with stable compounds of the sediments and, thus, there was an only potential environmental risk for the biota of the studied lakes.

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Influences of environmental factors on the modern 14C reservoir effects in Qinghai-Tibet Plateau lakes

et al. 2021

J. Mt. Sci.

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Variations in rare earth elements with environmental factors in lake surface sediments from 17 lakes in western China

Cited by 11 publications

References 50 publications

Controls on the distribution and fractionation of rare earth elements in recent sediments from the rivers along the west coast of India

Controls on the distribution and fractionation of rare earth elements in recent sediments from the rivers along the west coast of India

Chemical Composition of Water and Sediments of Tundra Lakes as the Background Area of the North of Murmansk Region (Arctic)

Influences of environmental factors on the modern 14C reservoir effects in Qinghai-Tibet Plateau lakes

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