Speciation, risks and isotope-based source apportionment of trace elements in soils of the northeastern Qinghai–Tibet Plateau

Li, Leiming; Wu, Jun; Lü, Jian; Xu, Juan

doi:10.1144/geochem2019-042

Cited by 9 publications

(10 citation statements)

References 42 publications

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“…The sequential extraction method was selected in this study that was proposed by Tessier et al (1979), which was proved to be effective for analysing speciation of trace elements in soils or sediments (Fernandes & Nayak 2015;Li et al 2020). Following the sequential extraction procedure (Tessier et al 1979), five fractions were analyzed for trace elements including the exchangeable, the carbonates, the Fe-Mn oxide, the organic matter and the residual fractions (Li et al 2020). All chemical reagents used in this study were analytical grade.…”

Section: Sequential Extraction Proceduresmentioning

confidence: 99%

“…The toxicity and bioavailability of trace elements can be ascertained based on the speciation of these elements (Li et al 2020). Anthropogenic trace elements exist in the exchangeable and adsorptive fractions, while the carbonate fraction is considered to weakly and easily equilibrate with the aqueous phase to become more bioavailable (Thinh et al 2018).…”

Section: Distribution and Speciation Of Boron Lithium And Trace Elementsmentioning

confidence: 99%

“…The contents of Pb in exchangeable, carbonate, Fe-Mn oxide, organic and residual fraction were in the range of 1.80%-25.20%, 13.62%-67.64%, 0%-49.78%, 7.03%-42.93% and 12.00%-44.00%, respectively. The trace elements in the carbonate fraction are easy to be released into the environment to gradually reach a balance when the pH of the environmental medium decreases (Li et al 2020). Zn mainly existed in the Fe-Mn oxide (31.60%-58.23%) Fig.…”

Section: Distribution and Speciation Of Boron Lithium And Trace Elementsmentioning

confidence: 99%

“…Soil/sediment pollution by trace elements has attracted wide attention in recent decades (Abbas et al 2021;Jahromi et al 2020). Trace elements originating from natural or anthropogenic sources ubiquitously exist in various environments including soils, sediments and water (Li et al 2018(Li et al , 2020Lu et al 2021;Wen et al 2019;Qasemi et al 2019;Saleh et al 2019). The sources of trace elements in soil/ sediment include the weather of minerals and anthropogenic sources such as industrial and mineral production.…”

Section: Introductionmentioning

confidence: 99%

“…The sources of trace elements in soil/ sediment include the weather of minerals and anthropogenic sources such as industrial and mineral production. Trace elements in soil/sediment do not degrade naturally and easily convert into organic complexes to accumulate in organisms (Wu et al 2016;Li et al 2020). The existence of heavy metals with high concentrations in water will be very hazardous although they might be essential for the metabolic activities of living organisms (Ayub et al 2020;Seifi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Speciation and correlation of boron and lithium in surficial sediments of the eastern and western Taijinar Salt Lake

2021

Environ Earth Sci

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The eastern/western Taijinar Salt Lake in Qaidam Basin is rich in lithium and boron resources. Chemical speciation of boron and lithium is conducive to identify the migration way and enrichment of heavy metals which might cause certain effects on the environment of salt-lake area. A total of 28 surface sediment samples were collected from the Taijinar Salt Lake in June of 2020 to investigate the distribution, speciation and sources of boron and lithium in salt-lake sediments. The results showed that the average content of boron/lithium was low with value of 1.6/3.4 µg kg −1, while that of the other elements in sediments ranging from 0.035 µg kg −1 (Cd) to 48.20 mg kg −1 (As) by following the order of As > Pb > Hg > Zn > Cr > Cd. Boron and lithium in sediments were mainly bound to Fe-Mn oxide and residual fractions with the average proportion of 29.87% and 35.36% for boron as well as 32.18% and 31.43% for lithium. Pb mainly existed in carbonate and residual fraction, while Zn mainly existed in the Fe-Mn oxide and residual bound with average value of 40.56% and 43.32%, respectively. Hg/Cr mainly existed in the residual with the average value of 58.68%/84.18%, while Cd mainly existed in the Fe-Mn oxide and residual fraction with an average proportion of 26.52% and 30.89%, respectively. As mainly existed in Fe-Mn oxide, residual, and organic fraction with an average proportion of 30.20%, 32.61% and 21.92%, respectively. Elements including Zn, Cr and Pb had a certain influence on the speciation of boron and lithium based on the correlation analysis. The enrichment of Cd, Cr and Pb might be mainly caused by anthropogenic sources. The findings of this study will provide some basic information on the important elements including lithium and boron in the salt-lake areas.

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Section: Sequential Extraction Proceduresmentioning

confidence: 99%

Section: Distribution and Speciation Of Boron Lithium And Trace Elementsmentioning

confidence: 99%

Section: Distribution and Speciation Of Boron Lithium And Trace Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Speciation and correlation of boron and lithium in surficial sediments of the eastern and western Taijinar Salt Lake

2021

Environ Earth Sci

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Multielement authentication of apples from the cold highlands in southwest China

et al. 2021

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BACKGROUND Half of all apple production worldwide comes from China. However, the geographic authentication of Chinese apples has not been well studied. We highlight the multi‐element‐based geographical discrimination of apples from the southwest cold highlands (SCH) of China. 565 samples from the SCH (138) and others (427) were obtained, and the content of fifteen elements were applied to construct models for discrimination. RESULTS The SCH apples from 2017 to 2019 had higher concentrations of Mn, Zn, Cr, Cd, Se, Pb, and Fe, but lower concentrations of Na, B, Ni, and P. With sufficient training, linear discriminant analysis (LDA) discriminated the SCH, and the testing accuracy averaged 92.5% and 92.2%. Nonlinear discrimination models were more suitable than the linear models. Optimized random forest analysis was the model with the best fit, and with averaged training and testing it obtained a level of accuracy of 98.2% and 98.5%. CONCLUSION The multielement‐based discrimination of SCH apples could aid further studies of geographical origins. © 2021 Society of Chemical Industry.

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Ecological implications of boron and sulfur in sediments from a lake in the Nile Delta: Remote sensing, fractionation and ecotoxicity

El Zokm,

Okbah,

El-Said

et al. 2024

J Soils Sediments

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Purpose The study aimed to provide an overview of the behavior, fate and ecotoxicity of boron and sulfur in the sediments of Lake Burullus, Egypt, after the degradation of the lake area. Materials and methods Changes in the studied lake area due to human activities were estimated using Erdas Imagine v14 and ArcGIS. Sequential and non-sequential extraction techniques for boron and sulfur fractionation in sediments were evaluated. Results and discussion A remote-sensing tracking investigation revealed a decrease in area of about 19.4%. Boron geochemical fractions had the order of residual (BF5, 61.48 ± 3.84%) > bound oxide (BF3, 15.47 ± 9.64%) > specifically adsorbed (BF2, 13.34 ± 9.85%) > bound organic (BF4, 9.85 ± 12.40%) > water-soluble and exchangeable (BF1, 2.2 ± 2.66%). Sulfur gave the order of the fractions as residual (SF5, 70.52 ± 16.92%) > phosphate extractable (SF2, 15.47 ± 9.34%) > bound organic (SF4, 7.20 ± 5.35%) > CaCl2 -extractable (SF3, 9.85 ± 12.40%) > water-soluble sulfur (SF1, 1.34 ± 1.52%). A worst-case scenario involving boron and sulfur toxicity values was studied using mixture risk characterization ratios (RCRmix) based on the predicted no effect concentration (PNEC) and sum of toxic units (STU). Conclusions The RCRmix and STU of boron showed high long-term risks to aquatic organisms, while sulfur showed high short-term risks. Invertebrates were the most sensitive species to boron and sulfur. This study sheds light on the ecological impact of boron and sulfur in Lake Burullus sediments, highlighting potential risks to aquatic organisms. Further research could focus on developing mitigation strategies to address these concerns. Graphical Abstract

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Speciation, risks and isotope-based source apportionment of trace elements in soils of the northeastern Qinghai–Tibet Plateau

Cited by 9 publications

References 42 publications

Speciation and correlation of boron and lithium in surficial sediments of the eastern and western Taijinar Salt Lake

Speciation and correlation of boron and lithium in surficial sediments of the eastern and western Taijinar Salt Lake

Multielement authentication of apples from the cold highlands in southwest China

Ecological implications of boron and sulfur in sediments from a lake in the Nile Delta: Remote sensing, fractionation and ecotoxicity

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