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Liu Y, Zhao J, Tian X, Yuan Y, Ni R, Zhao W, Liu Y, Xia C, Wang Z, Wang J. Stratum affects the distribution of soil selenium bioavailability by modulating the soil physicochemical properties: A case study in a Se-enriched area, China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 358:120838. [PMID: 38608576 DOI: 10.1016/j.jenvman.2024.120838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
The soil selenium (Se) content and bioavailability are important for human health. In this regard, knowing the factors driving the concentration of total Se and bioavailable Se in soils is essential to map Se, enhance foodstuffs' Se content, and improve the Se nutritional status of humans. In this study, total Se and Se bioavailability (i.e., phosphate extracted Se) in surface soils (0-20 cm) developed on different strata were analyzed in a Se-enriched region of Southwest China. Furthermore, the interaction between the stratum and soil properties was assessed and how did the stratum effect on the concentration and spatial distribution of Se bioavailability in soils was investigated. Results showed that the median concentration of total Se in soils was 0.308 mg/kg, which is higher than China's soil background. The mean proportion of phosphate extracted Se in total Se was 12.2 %. The values of total Se, phosphate extracted Se, and soil organic matter (SOM) in soils increased with the increasing stratum age. In contrast, the coefficient of weathering and eluviation (BA) values decreased. The analysis of statistics and Geodetector revealed that the SOM, stratum, and BA were the dominant controlling factors for the contents and distributions of soil total Se and phosphate extracted Se. This study provided strong evidence that the soil properties that affected the total Se and Se bioavailability were modulated by the local geological background, and had important practical implications for addressing Se malnutrition and developing the Se-rich resource in the study region and similar geological settings in different parts of the globe.
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Affiliation(s)
- Yonglin Liu
- School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China
| | - Jiayu Zhao
- School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China
| | - Xinglei Tian
- Shandong Institute of Geological Sciences, Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization, Key Laboratory of Gold Mineralization Processes and Resource Utilization, MNR, Jinan 250013, China.
| | - Yuyang Yuan
- Zunyi Normal University, Zunyi 563006, China
| | - Runxiang Ni
- Rural Energy and Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
| | - Wei Zhao
- Shandong Institute of Geological Sciences, Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization, Key Laboratory of Gold Mineralization Processes and Resource Utilization, MNR, Jinan 250013, China
| | - Yi Liu
- School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China
| | - Chuanbo Xia
- Shandong Institute of Geological Sciences, Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization, Key Laboratory of Gold Mineralization Processes and Resource Utilization, MNR, Jinan 250013, China
| | - Zhiming Wang
- Shandong Institute of Geological Sciences, Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization, Key Laboratory of Gold Mineralization Processes and Resource Utilization, MNR, Jinan 250013, China
| | - Jingyun Wang
- Shandong Institute of Geological Sciences, Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization, Key Laboratory of Gold Mineralization Processes and Resource Utilization, MNR, Jinan 250013, China
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Li Y, Saparov G, Zeng T, Abuduwaili J, Ma L. Geochemical behavior of rare earth elements in agricultural soils along the Syr Darya River within the Aral Sea Basin. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:493. [PMID: 38691227 DOI: 10.1007/s10661-024-12647-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/19/2024] [Indexed: 05/03/2024]
Abstract
The widespread use of rare earth elements (REEs) across various industries makes them a new type of pollutant. Additionally, REEs are powerful indicators of geochemical processes. As one of the two main rivers in the Aral Sea, identifying the geochemical behavior of REEs in agricultural soils of the Syr Darya River is of great significance for subsequent indicative studies. In this study, the geochemical characteristics, influencing factors, and potential application significance of REEs in agricultural soils from three sampling areas along the Syr Darya River were analyzed using soil geography and elemental geochemical analyses. The results showed that the highest total concentration of REEs in the agricultural soil was in Area I, with a mean value of 142.49 μg/g, followed by Area III with a mean value of 124.56 μg/g, and the lowest concentration was in Area II with a mean value of 122.48 μg/g. The agricultural soils in the three regions were enriched in light rare earth elements (LREEs), with mean L/H values of 10.54, 10.13, and 10.24, respectively. The differentiation between light and heavy rare earth elements (HREEs) was also high. The concentration of REEs in agricultural soil along the Syr Darya River was primarily influenced by minerals such as monazite and zircon, rather than human activities (the pollution index of all REEs was less than 1.5). The relationship between Sm and Gd can differentiate soils impacted by agricultural activities from natural background soils. The results of this study can serve as a basis for indicative studies of REEs in Central Asia.
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Affiliation(s)
- Yizhen Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Galymzhan Saparov
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China
- Kazakh Research Institute of Soil Science and Agrochemistry Named After U. U. Uspanov, Almaty, 050060, Kazakhstan
| | - Tao Zeng
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jilili Abuduwaili
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Long Ma
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China.
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone, Urumqi, 830011, China.
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Lin Z, Zhang Y, Liang X, Huang G, Fan F, Yin X, Chen Z. Spatial distribution of rare earth elements and their impact factors in an area with a high abundance of regolith-hosted deposits. CHEMOSPHERE 2024; 352:141374. [PMID: 38342144 DOI: 10.1016/j.chemosphere.2024.141374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/13/2024]
Abstract
Despite the widespread occurrence of regolith-hosted rare earth elements (REEs) across South China, their spatial distribution characteristics in soils and their impact factors remain largely uncertain. This knowledge gap impedes the exploration of regolith-hosted REE deposits and the assessment of the environmental risks associated with REEs. To address this issue, 180 soil samples were collected from Meizhou City, Guangdong Province, a region known for its high abundance of regolith-hosted REEs. Subsequently, the correlations between REE enrichment/fractionation and various factors, i.e., topography, climate conditions, land use, and landform were analysed using the geo-detector method. The results revealed a highly uneven spatial distribution of REEs and their fractionation features with some regions displaying distinct spatial patterns. Elevation was the dominant factor influencing this distribution, and showed strong correlations with the concentrations of REEs, light REEs (LREEs) and heavy REEs (HREEs); the LREE/HREE ratio; and the positive Ce anomaly (δCe). The negative Eu anomaly (δEu) showed a good correlation with rock type. The enrichment and fractionation of REEs indicated a coupling among the abovementioned factors. For REE enrichment, areas with elevations of 138-148 m, precipitation levels of 1553-1574 mm, annual average land surface temperatures of 30.4-30.5 °C, leaf area index values of 22-29 and surface cutting degree of 21.5-29.9 m showed the highest average abundance within each type (scope) of the predominant factors. These findings highlight the key factors affecting REE distribution, thereby aiding the efficient utilization of regolith-hosted REE resources and the evaluation of their environmental risks.
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Affiliation(s)
- Zhuoling Lin
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China; Guangdong Public Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangdong Academy of Sciences Guangzhou, 510070, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yaduo Zhang
- School of Geography, South China Normal University, Guangzhou, 510631, PR China
| | - Xiaoliang Liang
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China; Guangdong Provincial Key Laboratory of Mineral Physics and Material Research & Development, Guangzhou, 510640, PR China.
| | - Guangqing Huang
- Guangdong Public Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangdong Academy of Sciences Guangzhou, 510070, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Fenglei Fan
- School of Geography, South China Normal University, Guangzhou, 510631, PR China.
| | - Xiaoling Yin
- Guangdong Public Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangdong Academy of Sciences Guangzhou, 510070, PR China
| | - Zhihao Chen
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
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Zerizghi T, Guo Q, Wei R, Ziteng W, Du C, Deng Y. Rare earth elements in soil around coal mining and utilization: Contamination, characteristics, and effect of soil physicochemical properties. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121788. [PMID: 37164222 DOI: 10.1016/j.envpol.2023.121788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/20/2023] [Accepted: 05/06/2023] [Indexed: 05/12/2023]
Abstract
REEs are emerging contaminants, and soils nearby coal and coal ash with high REEs composition are vulnerable to REEs contamination. Besides, coal industry alters surrounding soil characteristics. However, there is information paucity about REEs contamination and geochemical behaviors along with soil characteristics around coal industrial areas, which are essential for understanding their toxicity and mobilization. The study was conducted in soils surrounding Kriel coal-fired power plant (KCM) and Greenside coal mining in Witbank (GSCM), South Africa. Multivariate statistical analysis, pollution and fractionation indices, and BCR sequential extraction were applied. The ∑REEs in the soils were compared to abundance of ∑REEs in the upper earth's crust (UEC), and slightly higher ∑REEs were found in KCM but slightly lower in GSCM. Generally, LREEs are abundant. The REEs in the soils were normalized using the Post-Archean Australian Shale (PAAS) and then Eu and Gd in KCM and Gd in GSCM were >1. Contamination assessment revealed slightly to moderately contaminated soils by REEs. ∑REEs in KCM was significantly correlated with soil particle sizes of 2.00-50.00 μm, Al2O3, Fe2O3, and MnO, while with 2.00-3.00 μm and Al2O3 in GSCM. Fractionation characteristics showed a positive Ce anomaly with positive linear regressions with Fe2O3 and MnO. In contrast, a negative Eu anomaly was found with positive linear regressions with Al, Ca, and Mg-oxides. Oxidizable fractioned REEs accounted for 32.33% of the ∑REEs in GSCM and 35.85% in KCM, and their high EF suggest enrichment that could be due to coal mining and utilization. Most soil physicochemical properties appear to be negatively correlated with the exchangeable REEs. Overall, the soils are contaminated by REEs, and characteristics of the REEs are considerably influenced by the major elements oxide, U, and Th contents. Therefore, more attention should be paid to REEs contamination and impacts around coal mining and utilization.
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Affiliation(s)
- Teklit Zerizghi
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Hamelmalo Agricultural College, National Commission for Higher Education, Keren, P.O. Box 397, Eritrea
| | - Qingjun Guo
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - Rongfei Wei
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wang Ziteng
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chenjun Du
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yinan Deng
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China; School of Earth Sciences, Yunnan University, Kunming, 650091, China
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Li T, Zhang X, Jia L, Zhu X, Xu M. Eco-geochemical evaluation of the Leizhou Peninsula (southern China) and the prediction of heavy metal content in soils. MARINE POLLUTION BULLETIN 2022; 185:114275. [PMID: 36327934 DOI: 10.1016/j.marpolbul.2022.114275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 05/15/2023]
Abstract
The Leizhou Peninsula is an important base for tropical and subtropical cash crops in China, but still lacks systematic research on regional eco-geochemical characteristics. Here the elemental results show that risk-free soils accounted for 9168 km2 and were mainly concentrated in the northern Leizhou Peninsula, while risk-controllable soils occupied 3318 km2 and were mostly distributed in the southern part. The contributor of the heavy metals in soils was mainly natural rocks, while the road traffic dust and coal combustion were also responsible for the origin of anomalous elements Cd, Cr, and Ni (0.004-1.8, 0.76-590, and 0.14-372 mg/kg, respectively). 90.15 % of the Leizhou Peninsula plants were not obviously contaminated, yet the comparison between the data collected in 1997 and 2018 allows us to speculate that Ni in the studied soils will reach the risk screening value in 7 years, followed by Cr and Cu in 39 and 92 years, respectively.
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Affiliation(s)
- Tingting Li
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Guangdong Geological Survey Institute, Guangzhou 510080, China.
| | - Xinchang Zhang
- State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Lili Jia
- Guangdong Geological Survey Institute, Guangzhou 510080, China
| | - Xin Zhu
- Guangdong Geological Survey Institute, Guangzhou 510080, China
| | - Min Xu
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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Li W, Zuo Y, Wang L, Wan X, Yang J, Liang T, Song H, Weihrauch C, Rinklebe J. Abundance, spatial variation, and sources of rare earth elements in soils around ion-adsorbed rare earth mining areas. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120099. [PMID: 36084740 DOI: 10.1016/j.envpol.2022.120099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/23/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Rare earth elements (REEs) concentrated in soils have attracted increasing attention about their impact on soil health as emerging contaminants. However, the sources of REEs enriched in soils are diverse and need to be further investigated. Here, surface soil samples were collected from southern Jiangxi Province, China. REEs contents and soil physicochemical properties were determined, and cerium (Ce) and europium (Eu) anomalies were calculated. Moreover, we established a model to further identify the main sources of REEs accumulation in the studied soils. Results show that the abundance of soil REEs reveals larger spatial variation, suggesting spatially heterogeneous distribution of REEs. The median content of light REEs in soils (154.5 mg kg-1) of the study area was higher than that of heavy REEs and yttrium (35.8 mg kg-1). In addition, most of the soil samples present negative Ce anomalies and all the soil samples present negative Eu anomalies implying the combined effect of weathering and potential exogenous inputs on soil REEs. Positive matrix factorization modeling reveals that soil REEs content is primarily influenced by soil parent materials. Potential anthropogenic sources include mining-related leachate, traffic exhaust, and industrial dust. These results demonstrate that the identification of sources of soil REEs is an important starting point for targeted REEs sources management and regulation of excessive and potentially harmful REEs levels in the soil.
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Affiliation(s)
- Wanshu Li
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yiping Zuo
- Foreign Environmental Cooperation Center, Ministry of Ecology and Environment, Beijing, 100035, China
| | - Lingqing Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany.
| | - Xiaoming Wan
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jun Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tao Liang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hocheol Song
- Department of Environment, Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea
| | - Christoph Weihrauch
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Environment, Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea
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