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Journal of Arid Land
Journal of Arid Land  2022, Vol. 14 Issue (11): 1258-1273    DOI: 10.1007/s40333-022-0107-8     CSTR: 32276.14.s40333-022-0107-8
Research article     
Geochemical signatures and human health risk evaluation of rare earth elements in soils and plants of the northeastern Qinghai-Tibet Plateau, China
LI Leiming1, WU Jun2,*(), LU Jian3,4, ZHANG Xiying1,5, XU Juan6
1Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
2Yantai Research Institute, Harbin Engineering University, Yantai 264006, China
3CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
4Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
5Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Xining 810008, China
6State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
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Abstract  

Information on rare earth elements (REEs) in soils and plants of the Qinghai-Tibet Plateau is very limited. Therefore, in this study, we performed field sampling to explore the geochemical signatures and human health risk of REEs in soils and plants of the northeastern Qinghai-Tibet Plateau, China. A total of 127 soil samples and 127 plant samples were collected from the northeastern Qinghai-Tibet Plateau to acquire the geochemical signatures and related human health risks of REEs. The mean total concentrations of REEs in soils and plants of the study area reached 178.55 and 10.06 mg/kg, respectively. The light REEs in soils and plants accounted for 76% and 77% of the total REEs, respectively. REEs showed significantly homogenous distribution in soils but inhomogeneous distribution in plants of the study area. Characteristic parameters indicated that light REEs were enriched and fractionated significantly, while heavy REEs were moderately fractionated in soils and plants. REEs in soils and plants showed significantly negative Europium anomaly. Cerium showed slightly positive anomaly in plants and slight anomaly in soils. The normalized distribution patterns of REEs were generally similar in the analyzed soils and the corresponding plants of the study area. The average bio-concentration factor of REEs ranged from 0.0478 (Scandium) to 0.0604 (Europium), confirming a small accumulation of REEs by plants. Health risks caused by REEs in soils and plants were negligible, while risks for adults were lower than those for children. This study provides important information on REEs in soils and plants of the northeastern Qinghai-Tibet Plateau.

Key words： rare earth elements      geochemical signatures      human health risk      carcinogenic risk      bio-concentration factor      Qinghai-Tibet Plateau     
Received: 06 July 2022      Published: 30 November 2022
Corresponding Authors: *WU Jun (E-mail: wujunlisa@163.com)
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LI Leiming
WU Jun
LU Jian
ZHANG Xiying
XU Juan
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LI Leiming, WU Jun, LU Jian, ZHANG Xiying, XU Juan. Geochemical signatures and human health risk evaluation of rare earth elements in soils and plants of the northeastern Qinghai-Tibet Plateau, China. Journal of Arid Land, 2022, 14(11): 1258-1273.

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http://jal.xjegi.com/10.1007/s40333-022-0107-8     OR     http://jal.xjegi.com/Y2022/V14/I11/1258

Fig. 1 Study area and soil and plant sampling sites
Rare earth element and parameter Soils (mg/kg) Plants (mg/kg) NASCa (mg/kg) Background values in Qinghai Province of China (soils)b (mg/kg) Background values in China (soils)c (mg/kg)
Min Mean Max SD Min Mean Max SD
La 8.36 31.04 54.26 6.6 0.10 1.76 8.66 1.7 16.00 32.80 39.70
Ce 17.09 63.66 112.43 13.2 0.44 3.78 16.70 3.4 33.00 58.30 68.40
Pr 1.82 7.32 12.50 1.6 0.02 0.39 1.93 0.4 3.90 5.87 7.17
Nd 6.95 26.95 46.38 5.8 0.08 1.43 7.19 1.4 16.0 23.70 26.40
Sm 1.33 5.18 8.94 1.1 0.02 0.28 1.45 0.3 3.50 4.77 5.22
Eu 0.33 1.11 3.26 0.3 0.00 0.07 0.32 0.1 1.10 0.93 1.03
Gd 1.31 5.10 8.81 1.0 0.02 0.28 1.41 0.3 3.30 4.15 4.60
Tb 0.18 0.68 1.24 0.1 0.00 0.04 0.19 0.0 0.60 0.60 0.63
Dy 0.99 3.56 6.68 0.7 0.01 0.20 1.02 0.2 3.70 3.80 4.13
Ho 0.20 0.69 1.29 0.1 0.00 0.04 0.20 0.0 0.80 0.77 0.87
Er 0.64 2.19 6.17 0.7 0.01 0.11 0.58 0.1 2.20 2.32 2.54
Tm 0.08 0.28 0.51 0.1 0.00 0.02 0.08 0.0 0.30 0.33 0.37
Yb 0.53 1.82 3.32 0.4 0.01 0.11 0.52 0.1 2.20 2.07 2.44
Lu 0.08 0.27 0.47 0.1 0.00 0.02 0.08 0.0 0.30 0.32 0.36
Y 5.13 18.20 34.64 3.9 0.07 1.07 5.43 1.0 20.00 21.10 22.90
Sc 4.86 10.51 21.93 3.2 0.03 0.47 2.48 0.4 30.00 10.42 /
REEs 55.29 178.55 306.80 35.8 1.03 10.06 48.25 9.3 136.90 172.25 186.76
ΣLREEs 35.88 135.26 234.42 28.2 0.84 7.71 36.27 7.2 73.50 126.37 147.92
ΣHREEs 18.34 43.29 72.39 8.8 0.18 2.35 11.98 2.2 33.40 35.50 38.84
ΣLREEs/ΣHREEs 2.75 4.14 6.09 0.4 2.95 4.21 6.74 0.6 2.20 3.56 3.81
(La/Yb)N 1.71 2.36 3.61 0.3 1.52 2.22 3.01 0.3 / 2.18 2.24
(La/Sm)N 1.16 1.31 1.54 0.1 1.08 1.36 1.67 0.1 / 1.50 1.66
(Gd/Yb)N 1.50 1.87 2.51 0.2 1.29 1.78 3.06 0.2 / 1.34 1.26
δCe 0.95 1.01 1.31 0.1 0.93 1.23 3.06 0.4 / 1.01 0.97
δEu 0.49 0.67 2.02 0.1 0.51 0.81 3.14 0.3 / 0.65 0.65
Table 1 Statistic parameters of rare earth elements (REEs) in soils and plants of the northeastern Qinghai-Tibet Plateau, China
Fig. S1 Pearson correlations among rare earth elements in soils (a) and plants (b) of the northeastern Qinghai-Tibet Plateau, China. La, lanthanum; Ce, cerium; Pr, praseodymium; Nd, neodymium; Sm, samarium; Eu, europium; Gd, gadolinium; Tb, terbium; Dy, dysprosium; Ho, holmium; Er, erbium; Tm, thulium; Yb, ytterbium; Lu, lutetium; Y, yttrium; Sc, scandium.
Fig. 2 Bio-concentration factor (BCF) values of rare earth elements (REEs) in the study area. La, lanthanum; Ce, cerium; Pr, praseodymium; Nd, neodymium; Sm, samarium; Eu, europium; Gd, gadolinium; Tb, terbium; Dy, dysprosium; Y, yttrium; Ho, holmium; Er, erbium; Tm, thulium; Yb, ytterbium; Lu, lutetium; Sc, scandium. The boxes represent the range from the lower quantile (Q25) to the upper quantile (Q75). The dots and horizontal lines inside the boxes represent the means and medians, respectively. The dots outside the boxes represent outliers. The upper and lower whiskers show the range within 1.5IQR (interquartile range).
Fig. 3 Concentrations of light REEs (ΣLREEs) and heavy REEs (ΣHREEs) as well as the ratio of ΣLREEs to ΣHREEs (ΣLREEs/ΣHREEs) in soil samples (a) and plant samples (b). P-1-P-127 represent the serial number of sampling sites.
Fig. 4 (a), normalization of average REEs values and background composition in soils; (b), normalization of average REEs values in plants. NASC, North American shale composite; BC, background composition. Soil/NASC represents normalization of average REEs values in soils, BC/NASC denotes normalization of background composition in soils, and Plant/NASC represents normalization of average REEs values in plants.
Fig. 5 Non-carcinogenic risk of REEs from soils and plants in the northeastern Qinghai-Tibet Plateau, China. (a and b), non-carcinogenic risk of REEs for adults and children from soils, respectively; (c and d), non-carcinogenic risk of REEs for adults and children from plants, respectively. HI is the sum of the hazard quotient of ingestion, inhalation, and dermal adsorption.
REE Non-carcinogenic risk for children Non-carcinogenic risk for adults Carcinogenic risks
Ingestion Inhalation Dermal adsorption Total Ingestion Inhalation Dermal adsorption Total Ingestion Inhalation Dermal adsorption Total
La 1.02×10-2 7.50×10-6 2.86×10-4 1.05×10-2 4.37×10-3 3.22×10-6 1.75×10-4 4.55×10-3 8.00×10-11 6.93×10-12 2.52×10-12 8.94×10-11
Ce 2.09×10-2 1.54×10-5 5.86×10-4 2.15×10-2 8.97×10-3 6.60×10-6 3.58×10-4 9.33×10-3 1.64×10-10 1.42×10-11 5.18×10-12 1.83×10-10
Pr 2.41×10-3 1.77×10-6 6.74×10-5 2.48×10-3 1.03×10-3 7.58×10-7 4.11×10-5 1.07×10-3 1.89×10-11 1.63×10-12 5.95×10-13 2.11×10-11
Nd 8.86×10-3 6.52×10-6 2.48×10-4 9.12×10-3 3.80×10-3 2.79×10-6 1.52×10-4 3.95×10-3 6.94×10-11 6.01×10-12 2.19×10-12 7.76×10-11
Sm 1.70×10-3 1.25×10-6 4.77×10-5 1.75×10-3 7.30×10-4 5.36×10-7 2.91×10-5 7.59×10-4 1.33×10-11 1.16×10-12 4.21×10-13 1.49×10-11
Eu 3.64×10-4 2.68×10-7 1.02×10-5 3.75×10-4 1.56×10-4 1.15×10-7 6.23×10-6 1.62×10-4 2.85×10-12 2.47×10-13 9.01×10-14 3.19×10-12
Gd 1.68×10-3 1.23×10-6 4.70×10-5 1.73×10-3 7.19×10-4 5.29×10-7 2.87×10-5 7.48×10-4 1.31×10-11 1.14×10-12 4.15×10-13 1.47×10-11
Tb 2.23×10-4 1.64×10-7 6.23×10-6 2.29×10-4 9.54×10-5 7.01×10-8 3.81×10-6 9.93×10-5 1.74×10-12 1.51×10-13 5.51×10-14 1.95×10-12
Dy 1.17×10-3 8.60×10-7 3.27×10-5 1.20×10-3 5.01×10-4 3.69×10-7 2.00×10-5 5.22×10-4 9.17×10-12 7.94×10-13 2.89×10-13 1.02×10-11
Ho 2.26×10-4 1.66×10-7 6.34×10-6 2.33×10-4 9.70×10-5 7.13×10-8 3.87×10-6 1.01×10-4 1.77×10-12 1.54×10-13 5.60×10-14 1.98×10-12
Er 7.19×10-4 5.29×10-7 2.01×10-5 7.40×10-4 3.08×10-4 2.27×10-7 1.23×10-5 3.21×10-4 5.64×10-12 4.88×10-13 1.78×10-13 6.30×10-12
Tm 9.08×10-5 6.68×10-8 2.54×10-6 9.34×10-5 3.89×10-5 2.86×10-8 1.55×10-6 4.05×10-5 7.12×10-13 6.16×10-14 2.25×10-14 7.96×10-13
Yb 5.99×10-4 4.40×10-7 1.68×10-5 6.16×10-4 2.57×10-4 1.89×10-7 1.02×10-5 2.67×10-4 4.69×10-12 4.06×10-13 1.48×10-13 5.25×10-12
Lu 8.87×10-5 6.52×10-8 2.48×10-6 9.12×10-5 3.80×10-5 2.79×10-8 1.52×10-6 3.95×10-5 6.95×10-13 6.02×10-14 2.19×10-14 7.77×10-13
Y 5.99×10-3 4.40×10-6 1.68×10-4 6.16×10-3 2.57×10-3 1.89×10-6 1.02×10-4 2.67×10-3 4.69×10-11 4.06×10-12 1.48×10-12 5.24×10-11
Sc 3.45×10-3 2.54×10-6 9.67×10-5 3.55×10-3 1.48×10-3 1.09×10-6 5.91×10-5 1.54×10-3 2.71×10-11 2.34×10-12 8.55×10-13 3.03×10-11
Total 5.87×10-2 4.32×10-5 1.64×10-3 6.04×10-2 2.52×10-2 1.85×10-5 1.00×10-3 2.62×10-2 4.60×10-10 3.98×10-11 1.45×10-11 5.14×10-10
Table S1 Non-carcinogenic and carcinogenic risk for rare earth elements (REEs) in soils of the northeastern Qinghai-Tibet Plateau, China
REE Non-carcinogenic risk for children Non-carcinogenic risk for adults Carcinogenic risks
Ingestion Inhalation Dermal adsorption Total Ingestion Inhalation Dermal adsorption Total Ingestion Inhalation Dermal adsorption Total
La 5.80×10-4 4.27×10-7 1.62×10-5 5.97×10-4 2.49×10-4 1.83×10-7 9.92×10-6 2.59×10-4 4.55×10-12 3.94×10-13 1.44×10-13 5.08×10-12
Ce 1.24×10-3 9.14×10-7 3.48×10-5 1.28×10-3 5.33×10-4 3.92×10-7 2.13×10-5 5.54×10-4 9.74×10-12 8.44×10-13 3.08×10-13 1.09×10-11
Pr 1.28×10-4 9.38×10-8 3.57×10-6 1.31×10-4 5.47×10-5 4.02×10-8 3.57×10-6 5.83×10-5 1.00×10-12 8.66×10-14 3.16×10-14 1.12×10-12
Nd 4.71×10-4 3.46×10-7 1.32×10-5 4.84×10-4 2.02×10-4 1.48×10-7 8.05×10-6 2.10×10-4 3.69×10-12 3.19×10-13 1.16×10-13 4.12×10-12
Sm 9.25×10-5 6.80×10-8 2.59×10-6 9.52×10-5 3.96×10-5 2.91×10-8 1.58×10-6 4.13×10-5 7.25×10-13 6.28×10-14 2.29×10-14 8.11×10-13
Eu 2.22×10-5 1.63×10-8 6.21×10-7 2.28×10-5 9.50×10-6 6.98×10-9 3.79×10-7 9.88×10-6 1.74×10-13 1.50×10-14 5.48×10-15 1.94×10-13
Gd 9.24×10-5 6.80×10-8 2.59×10-6 9.51×10-5 3.96×10-5 2.91×10-8 1.58×10-6 4.12×10-5 7.24×10-13 6.27×10-14 2.29×10-14 8.10×10-13
Tb 1.23×10-5 9.06×10-9 3.45×10-7 1.27×10-5 5.28×10-6 3.88×10-9 2.11×10-7 5.49×10-6 9.65×10-14 8.36×10-15 3.05×10-15 1.08×10-13
Dy 6.64×10-5 4.88×10-8 1.86×10-6 6.83×10-5 2.84×10-5 2.09×10-8 1.13×10-6 2.96×10-5 5.20×10-13 4.50×10-14 1.64×10-14 5.81×10-13
Ho 1.31×10-5 9.65×10-9 3.67×10-7 1.35×10-5 5.62×10-6 4.13×10-9 2.24×10-7 5.85×10-6 1.03×10-13 8.90×10-15 3.25×10-15 1.15×10-13
Er 3.75×10-5 2.76×10-8 1.05×10-6 3.86×10-5 1.61×10-5 1.18×10-8 6.42×10-7 1.67×10-5 2.94×10-13 2.55×10-14 9.28×10-15 3.29×10-13
Tm 5.26×10-6 3.86×10-9 1.47×10-7 5.41×10-6 2.25×10-6 1.66×10-9 8.99×10-8 2.34×10-6 4.12×10-14 3.57×10-15 1.30×10-15 4.61×10-14
Yb 3.48×10-5 2.56×10-8 9.74×10-7 3.58×10-5 1.49×10-5 1.10×10-8 5.95×10-7 1.55×10-5 2.73×10-13 2.36×10-14 8.61×10-15 3.05×10-13
Lu 5.27×10-6 3.88×10-9 1.48×10-7 5.42×10-6 2.26×10-6 1.66×10-9 9.01×10-8 2.35×10-6 4.13×10-14 3.58×10-15 1.30×10-15 4.62×10-14
Y 3.51×10-4 2.58×10-7 9.82×10-6 3.61×10-4 1.50×10-4 1.11×10-7 6.00×10-6 1.56×10-4 2.75×10-12 2.38×10-13 8.68×10-14 3.07×10-12
Sc 1.55×10-4 1.14×10-7 4.34×10-6 1.59×10-4 6.64×10-5 4.88×10-8 2.65×10-6 6.91×10-5 1.21×10-12 1.05×10-13 3.83×10-14 1.36×10-12
Total 3.31×10-3 2.43×10-6 9.26×10-5 3.40×10-3 1.42×10-3 1.04×10-6 5.80×10-5 1.48×10-3 2.59×10-11 2.25×10-12 8.19×10-13 2.90×10-11
Table S2 Non-carcinogenic and carcinogenic risk for REEs in plants of the northeastern Qinghai-Tibet Plateau, China
Fig. 6 Carcinogenic risk (CR) of REEs from soils (a) and plants (b) in the northeastern Qinghai-Tibet Plateau, China
[1]   Aide M T, Aide C. 2012. Rare earth elements: their importance in understanding soil genesis. International Scholarly Research Notices, 2012: 783876, doi: 10.5402/2012/783876.
doi: 10.5402/2012/783876
[2]   Allajbeu S, Yushin N S, Qarri F, et al. 2016. Atmospheric deposition of rare earth elements in Albania studied by the moss biomonitoring technique, neutron activation analysis and GIS technology. Environmental Science and Pollution Research, 23: 14087-14101.
doi: 10.1007/s11356-016-6509-4
[3]   Barta C A, Sachs-Barrable K, Jia J, et al. 2007. Lanthanide containing compounds for therapeutic care in bone resorption disorders. Dalton Transactions, 21(43): 5019-5030.
[4]   Brioschi L, Steinmann M, Lucot E, et al. 2013. Transfer of rare earth elements (REE) from natural soil to plant systems: implications for the environmental availability of anthropogenic REE. Plant and Soil, 366: 143-163.
doi: 10.1007/s11104-012-1407-0
[5]   Chen J Q, Wang J P, Zhang Y L, et al. 2022. A study on the distribution characteristics of arsenic and mercury in the salt lake of Ayacuo, Tibet. Journal of Salt Lake Research, 30(2): 61-69. (in Chinese)
[6]   Chen J Y, Yang R D. 2010. Analysis on REE geochemical characteristics of three types of REE-rich soil in Guizhou Province, China. Journal of Rare Earths, 28: 517-522.
doi: 10.1016/S1002-0721(10)60271-2
[7]   CNEMC(China National Environmental Monitoring Centre). 1989. The Background Values of Chinese Soils. Beijing: Environmental Science Press of China, 87-90. (in Chinese)
[8]   Costa L, Johannesson K, Mirlean N, et al. 2021. Rare earth element distributions in salt marsh sediment cores reveal evidence of environmental lability during bioturbation and diagenetic processes. Chemical Geology, 584: 120503, doi: 10.1016/j.chemgeo.2021.120503.
doi: 10.1016/j.chemgeo.2021.120503
[9]   Cui L, Li J, Gao X Y, et al. 2022. Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake. Frontiers of Environmental Science & Engineering, 16: 41, doi: 10.1007/s11783-021-1475-6.
doi: 10.1007/s11783-021-1475-6
[10]   Duan X L. 2012. Research Methods of Exposure Factor and its Application in Environmental Health Risk Assessment. Beijing: Science Press. (in Chinese)
[11]   Durn G, Perković I, Stummeyer J, et al. 2021. Differences in the behaviour of trace and rare-earth elements in oxidizing and reducing soil environments: Case study of Terra Rossa soils and Cretaceous palaeosols from the Istrian peninsula, Croatia. Chemosphere, 283: 131286, doi: 10.1016/j.chemosphere.2021.131286.
doi: 10.1016/j.chemosphere.2021.131286
[12]   Faiz Y, Siddioue N, Tufail M, 2012. Pollution level and health risk assessment of road dust from an expressway. Journal of Environmental Science and Health, Part A, 47: 818-829.
doi: 10.1080/10934529.2012.664994
[13]   Ferreira M S, Fontes M P F, Bellato C R, et al. 2021. Geochemical signatures and natural background values of rare earth elements in soils of Brazilian Amazon. Environmental Pollution, 277: 116743, doi: 10.1016/j.envpol.2021.116743.
doi: 10.1016/j.envpol.2021.116743
[14]   Ferreira M S, Fontes M P F, Lima M T W D, et al. 2022. Human health risk assessment and geochemical mobility of rare earth elements in Amazon soils. Science of the Total Environment, 806(2): 151191, doi: 10.1016/j.scitotenv.2021.151191.
doi: 10.1016/j.scitotenv.2021.151191
[15]   Fu J J, Zhang Q, Huang B C, et al. 2021. A review on anammox process for the treatment of antibiotic-containing wastewater: Linking effects with corresponding mechanisms. Frontiers of Environmental Science & Engineering, 15(1): 17, doi: 10.1007/s11783-020-1309-y.
doi: 10.1007/s11783-020-1309-y
[16]   Gill L W, Babechuk M G, Kamber B S, et al. 2018. Use of trace and rare earth elements to quantify autogenic and allogenic inputs within a lowland karst network. Applied Geochemistry, 90: 101-114.
doi: 10.1016/j.apgeochem.2018.01.001
[17]   Godwyn-Paulson P, Jonathan M P, Rodríguez-Espinosa P F, et al. 2022. Rare earth element enrichments in beach sediments from Santa Rosalia mining region, Mexico: An index-based environmental approach. Marine Pollution Bulletin, 174: 113271, doi: 10.1016/j.marpolbul.2021.113271.
doi: 10.1016/j.marpolbul.2021.113271
[18]   Groenenberg J E, Romkens P F A M, Comans R N J, et al. 2010. Transfer functions for solid-solution partitioning of cadmium, copper, nickel, lead and zinc in soils: derivation of relationships for free metal ion activities and validation with independent data. European Journal of Soil Science, 61: 58-73.
doi: 10.1111/j.1365-2389.2009.01201.x
[19]   Guo G H, Song B, Lei M, et al. 2019. Rare earth elements (REEs) in PM10 and associated health risk from the polymetallic mining region of Nandan County, China. Human and Ecological Risk Assessment: An International Journal, 25: 672-687.
doi: 10.1080/10807039.2018.1447362
[20]   He B Y, Wang J P, Kong F C, et al. 2022. Analysis of environmental pollution dissipation capacity of salt lake area in the Qaidam Basin. Journal of Salt Lake Research, 30(2): 52-60. (in Chinese)
[21]   Henderson P. 1984. Chapter 1-general geochemical properties and abundances of the rare earth elements. In: Henderson P (Ed.). Developments in Geochemistry. Amsterdam: Elsevier, 1-32.
[22]   Hu J L, Wu F Y, Wu S C, et al. 2013. Phytoavailability and phytovariety codetermine the bioaccumulation risk of heavy metal from soils, focusing on Cd-contaminated vegetable farms around the Rearl River delta, China. Ecotoxicology and Environmental Safety, 91(2): 18-24.
doi: 10.1016/j.ecoenv.2013.01.001
[23]   Hu Z, Haneklaus S, Sparovek G, et al. 2006. Rare earth elements in soils. Communications in Soil Science and Plant Analysis, 37(9-10): 1381-1420.
doi: 10.1080/00103620600628680
[24]   Huang H B, Lin C Q, Yu R L, et al. 2019. Spatial distribution and source appointment of rare earth elements in paddy soils of Jiulong River Basin, Southeast China. Journal of Geochemical Exploration, 200: 213-220.
doi: 10.1016/j.gexplo.2018.09.008
[25]   Huang X, Zhang G C, Pan A, et al. 2016. Protection the environment and public health from rare earth mining. Earth's Future, 4: 532-535.
doi: 10.1002/2016EF000424
[26]   Ingrid C M S, Laís A S, Vinicius F P, et al. 2022. Environmental settings of seagrass meadows control rare earth element distribution and transfer from soil to plant compartments. Science of the Total Environment, 843: 157095, doi: 10.1016/j.scitotenv.2022.157095.
doi: 10.1016/j.scitotenv.2022.157095
[27]   Jeelani N, Zhu Z J, Wang P H, et al. 2017. Assessment of trace metal contamination and accumulation in sediment and plants of the Suoxu River, China. Aquatic Botany, 140: 92-95.
doi: 10.1016/j.aquabot.2016.11.007
[28]   Khan A M, Bakar N K A, Bakar A F A, et al. 2017. Chemical speciation and bioavailability of rare earth elements (REEs) in the ecosystem: a review. Environmental Science and Pollution Research, 24: 22764-22789.
doi: 10.1007/s11356-016-7427-1
[29]   Li L M, Wu J, Lu J, et al. 2018. Distribution, pollution, bioaccumulation, and ecological risks of trace elements in soils of the northeastern Qinghai-Tibet Plateau. Ecotoxicology and Environmental Safety, 166: 345-353.
doi: S0147-6513(18)30983-7 pmid: 30278396
[30]   Li L M, Wu J, Lu J, et al. 2022. Water quality evaluation and ecological-health risk assessment on trace elements in surface water of the northeastern Qinghai-Tibet Plateau. Ecotoxicology and Environmental Safety, 241: 113775, doi: 10.1016/j.ecoenv.2022.113775.
doi: 10.1016/j.ecoenv.2022.113775
[31]   Li X F, Chen Z B, Chen Z Q, et al. 2013. A human health risk assessment of rare earth elements in soil and vegetables from a mining area in Fujian Province, Southeast China. Chemosphere, 93(6): 1240-1246.
doi: 10.1016/j.chemosphere.2013.06.085 pmid: 23891580
[32]   Liang Z F, Ding Q, Wei D P, et al. 2013. Major controlling factors and predictions for cadmium transfer from the soil into spinach plants. Ecotoxicology and Environmental Safety, 93(4): 180-185.
doi: 10.1016/j.ecoenv.2013.04.003
[33]   Lin X K, Chen X H, Li S C, et al. 2021. Sewage sludge ditch for recovering heavy metals can improve crop yield and soil environmental quality. Frontiers of Environmental Science & Engineering, 15(2): 22, doi: 10.1007/s11783-020-1314-1.
doi: 10.1007/s11783-020-1314-1
[34]   Liu B L, Ai S W, Zhang W Y, et al. 2017. Assessment of the bioavailability, bioaccessibility and transfer of heavy metals in the soil-grain-human systems near a mining and smelting area in NW China. Science of the Total Environment, 609: 822-829.
doi: 10.1016/j.scitotenv.2017.07.215
[35]   Liu C, Yuan M, Liu W S, et al. 2018. Element case studies:rare earth elements. In: Van der Ent A, Echevarria G, Baker A, et al., (Eds.). Agromining: Farming for Metals. Mineral Resource Reviews. Cham: Springer, 297-308.
[36]   Liu J, Liu Y J, Liu Z, et al. 2019. Source apportionment of soil PAHs and human health exposure risks quantification from sources: the Yulin National Energy and Chemical Industry Base, China as case study. Environmental Geochemistry and Health, 41: 617-632.
doi: 10.1007/s10653-018-0155-3 pmid: 30027363
[37]   Liu K, Lv J L, He W X, et al. 2015. Major factors influencing cadmium uptake from the soil into wheat plants. Ecotoxicology and Environmental Safety, 11: 207-213.
[38]   Lu J, Lin Y C, Wu J, et al. 2021. Continental-scale spatial distribution, sources, and health risks of heavy metals in seafood: challenge for the water-food-energy nexus sustainability in coastal regions? Environmental Science and Pollution Research, 28: 63815-63828.
doi: 10.1007/s11356-020-11904-8
[39]   Lu J, Wu J, Wang J H, 2022a. Metagenomic analysis on resistance genes in water and microplastics from a mariculture system. Frontiers of Environmental Science & Engineering, 16(1): 4, doi: 10.1007/s11783-021-1438-y.
doi: 10.1007/s11783-021-1438-y
[40]   Lu J, Zhang Y X, Wu J, et al. 2022b. Intervention of antimicrobial peptide usage on antimicrobial resistance in aquaculture. Journal of Hazardous Materials, 427: 128154, doi: 10.1016/j.jhazmat.2021.128154.
doi: 10.1016/j.jhazmat.2021.128154
[41]   Malhotra N, Hsu H-S, Liang S-T, et al. 2020. An updated review of toxicity effect of the rare earth elements (REEs) on aquatic organisms. Animals, 10: 1663, doi: 10.3390/ani10091663.
doi: 10.3390/ani10091663
[42]   Mclennan S M. 1989. Rare earth elements in sedimentary rocks:influence of provenance and sedimentary processes. In: Lipin Bruce R, McKay G A (Eds.). Geochemistry and Mineralogy of Rare Earth Elements. Berlin: De Gruyter, 169-200.
[43]   MEPC (Ministry of Environmental Protection of the People's Pepubic of China). 1990. Background Values of Soil Elements in China. Beijing: China Environment Science Press, 329-493.
[44]   Meryem B, Ji H B, Gao Y, et al. 2016. Distribution of rare earth elements in agricultural soil and human body (scalp hair and urine) near smelting and mining areas of Hezhang, China. Journal of Rare Earths, 34: 1156-1167.
doi: 10.1016/S1002-0721(16)60148-5
[45]   Migaszewski Z M, Gałuszka A, 2015. The characteristics, occurrence, and geochemical behavior of rare earth elements in the environment: a review. Critical Reviews in Environmental Science and Technology, 45: 429-471.
doi: 10.1080/10643389.2013.866622
[46]   Mihajlovic J, Stark H J, Wennrich R, et al. 2015. Rare earth elements in two Luvisols developed from loess under arable and forest land use in Bavaria, Germany: Concentrations, stocks, and potential mobilities. Soil Science, 180(3): 107-123.
doi: 10.1097/SS.0000000000000117
[47]   Nicolas L, Charlotte C, Rémi M, et al. 2022. Implications of speciation on rare earth element toxicity: A focus on organic matter influence in Daphnia magna standard test. Environmental Pollution, 307: 119554, doi: 10.1016/j.envpol.2022.119554.
doi: 10.1016/j.envpol.2022.119554
[48]   Ou X L, Chen Z B, Chen X L, et al. 2022. Redistribution and chemical speciation of rare earth elements in an ion-adsorption rare earth tailing, Southern China. Science of the Total Environment, 821: 153369, doi: 10.1016/j.scitotenv.2022.153369.
doi: 10.1016/j.scitotenv.2022.153369
[49]   Pagano G, Guida M, Tommasi F, et al. 2015. Health effects and toxicity mechanisms of rare earth elements-Knowledge gaps and research prospects. Ecotoxicology and Environmental Safety, 115: 40-48.
doi: 10.1016/j.ecoenv.2015.01.030 pmid: 25679485
[50]   Pagano G. 2016. Rare Earth Elements in Human and Environmental Health (1st ed.). Singapore: Jenny Stanford.
[51]   Pirarath R, Shivashanmugam P, Syed A, et al. 2021. Mercury removal from aqueous solution using petal-like MoS2 nanosheets. Frontiers of Environmental Science & Engineering, 15(1): 15, doi: 10.1007/s11783-020-1307-0.
doi: 10.1007/s11783-020-1307-0
[52]   Qiao W C, Li R, Tang T H, et al. 2021. Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed wetland system. Frontiers of Environmental Science & Engineering, 15(2): 20, doi: 10.1007/s11783-020-1312-3.
doi: 10.1007/s11783-020-1312-3
[53]   Rodríguez-Barranco M, Lacasaña M, Gil F, et al. 2014. Cadmium exposure and neuropsychological development in school children in south-western Spain. Environmental Research, 134: 66-73.
doi: 10.1016/j.envres.2014.06.026 pmid: 25046814
[54]   Shen M, Chen L Y, Han W L, et al. 2018. Methods for the determination of heavy metals in indocalamus leaves after different preservation treatment using inductively-coupled plasma mass spectrometry. Microchemical Journal, 139: 295-300.
doi: 10.1016/j.microc.2018.03.013
[55]   State Environmental Protection Administration, 2004. The Technical Specification for Soil Environmental Monitoring (HJ/T 166-2004). China Environmental Press Co., Ltd, Beijing.
[56]   Sun G Y, Li Z G, Liu T, et al. 2017. Rare earth elements in street dust and associated health risk in a municipal industrial base of central China. Environmental Geochemistry and Health, 39: 1469-1486.
doi: 10.1007/s10653-017-9982-x pmid: 28550599
[57]   Tang S T, Zheng C L, Chen M J, et al. 2020. Geobiochemistry characteristics of rare earth elements in soil and ground water: a case study in Baotou, China. Science Reports, 10(1): 11740, doi: 10.1038/s41598-020-68661-4.
doi: 10.1038/s41598-020-68661-4
[58]   Tao Y, Shen L, Feng C, et al. 2022. Distribution of rare earth elements (REEs) and their roles in plant growth: a review. Environmental Pollution, 298: 118540, doi: 10.1016/j.envpol.2021.118540.
doi: 10.1016/j.envpol.2021.118540
[59]   Taylor S R, McLennan S M. 1985. The Continental Crust: Its Composition and Evolution. Oxford: Blackwell, 312.
[60]   Tyler G. 2004. Rare earth elements in soil and plant systems-a review. Plant and Soil, 267(1-2): 191-206.
doi: 10.1007/s11104-005-4888-2
[61]   USEPA (United States Environmental Protection Agency). 1996. Soil screening guidance:Technical background document. In: Office of Solid Waste and Emergency Response. Washington D.C., USA.
[62]   USEPA (United States Environmental Protection Agency). 2002. Supplemental guidance for developing soil screening, In: Office of Solid Waste and Emergency Response. Washington D.C., USA.
[63]   USEPA (United States Environmental Protection Agency). 2004. Supplemental guidance for dermal risk assessment. In: Risk Assessment Guidance for Superfund (RAGS), Washington D.C., USA.
[64]   Wang C F, Chen G F, Zhu Y C, et al. 2017. Assessment of leaching behavior and human bioaccessibility of rare earth elements in typical hospital waste incineration ash in China. Frontiers of Environmental Science & Engineering, 11: 5, doi: 10.1007/s11783-017-0946-2.
doi: 10.1007/s11783-017-0946-2
[65]   Wang J, Liu S Y, Wei X D, et al. 2022. Uptake, organ distribution and health risk assessment of potentially toxic elements in crops in abandoned indigenous smelting region. Chemosphere, 292: 133321, doi: 10.1016/j.chemosphere.2021.133321.
doi: 10.1016/j.chemosphere.2021.133321
[66]   Wang L J, Zhang S, Gao X J. 1998. Geochemical characteristics of rare earth elements in different types of soils in China. Journal of Rare Earths, 19(1): 51-67.
[67]   Wang L Q, Liang T. 2016. Anomalous abundance and redistribution patterns of rare earth elements in soils of a mining area in Inner Mongolia China. Environmental Science and Pollution Research, 23: 11330-11338.
doi: 10.1007/s11356-016-6351-8
[68]   Wang L Q, Han X X, Liang T, et al. 2019. Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China. Chemosphere, 217: 851-857.
doi: S0045-6535(18)32163-5 pmid: 30458420
[69]   Wu H H, Xu C B, Wang J H, et al. 2021. Health risk assessment based on source identification of heavy metals: A case study of Beiyun River, China. Ecotoxicology and Environmental Safety, 213: 112046, doi: 10.1016/j.ecoenv.2021.112046.
doi: 10.1016/j.ecoenv.2021.112046
[70]   Wu J, Lu J, Li L M, et al. 2018. Pollution, ecological-health risks, and sources of heavy metals in soil of the northeastern Qinghai-Tibet Plateau. Chemosphere, 201: 234-242.
doi: S0045-6535(18)30334-5 pmid: 29524824
[71]   Wu J, Lu J, Li L M, et al. 2019. Distribution, pollution, and ecological risks of rare earth elements in soil of the northeastern Qinghai-Tibet Plateau. Human and Ecological Risk Assessment: An International Journal, 25(7): 1816-1831.
doi: 10.1080/10807039.2018.1475215
[72]   Xu X D, Cao Z M, Zhang Z X, et al. 2016. Spatial distribution and pollution assessment of heavy metals in the surface sediments of the Bohai and Yellow Seas. Marine Pollution Bulletin, 110(1): 596-602.
doi: S0025-326X(16)30399-X pmid: 27269383
[73]   Yao P Z, Hu X, Liu X, et al. 2010. REE distribution characteristics in surface sediments from Western Xiamen Bay. Journal of the Chinese Society of Rare Earths, 28(4): 495-500. (in Chinese)
[74]   Yu R L, Lin C Q, Yan Y, et al. 2019. Distribution and provenance implication of rare earth elements and Sr-Nd isotopes in surface sediments of Jiulong River, Southeast China. Journal of Soils and Sediments, 19: 1499-1510.
doi: 10.1007/s11368-018-2135-8
[75]   Zhang D Y, Shen X Y, Ruan Q, et al. 2014. Effects of subchronic samarium exposure on the histopathological structure and apoptosis regulation in mouse testis. Environmental Toxicology and Pharmacology, 37: 505-512.
doi: 10.1016/j.etap.2014.01.007 pmid: 24561534
[76]   Zhang H, Feng J, Zhu W F, et al. 2000. Chromic toxicity of rare-earth elements on human beings: implications of blood biochemical indices in REE-high regions, South Jiangxi. Biological Trace Element Research, 73: 1-17.
doi: 10.1385/BTER:73:1:1
[77]   Zhao Y, Yu R L, Hu G R, et al. 2017. Characteristics and environmental significance of rare earth elements in PM2.5 of Nanchang, China. Journal of Rare Earths, 35(1): 98-106.
doi: 10.1016/S1002-0721(16)60179-5
[78]   Zheng N, Liu J S, Wang Q C, et al. 2010a. Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northest of China. Science of the Total Environment, 408: 726-733.
doi: 10.1016/j.scitotenv.2009.10.075
[79]   Zheng N, Liu J S, Wang Q C, et al. 2010b. Heavy metals exposure of children from stairway and sidewalk dust in the smelting district, Northeast of China. Atmospheric Environment, 44: 3239-3245.
doi: 10.1016/j.atmosenv.2010.06.002
[80]   Zheng N, Hou S N, Wang S J, et al. 2020. Health risk assessment of heavy metals in street dust around a zinc smelting plant in China based on bioavailability and bioaccessibility. Ecotoxicology and Environmental Safety, 197: 110617, doi: 10.1016/j.ecoenv.2020.110617.
doi: 10.1016/j.ecoenv.2020.110617
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