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Zhang L, Zhu Y, Zhang Y, Zhong J, Li J, Yang S, Ta W, Zhang Y. Characteristics, source analysis, and health risk assessment of potentially toxic elements pollution in soil of dense molybdenum tailing ponds area in central China. Environ Geochem Health 2024; 46:129. [PMID: 38483651 DOI: 10.1007/s10653-024-01886-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/24/2024] [Indexed: 03/19/2024]
Abstract
The issue of potentially toxic elements (PTEs) contamination of regional soil caused by mining activities and tailings accumulation has attracted wide attention all over the world. The East Qinling is one of the three main molybdenum mines in the world, and the concentration of PTEs such as Hg, Pb and Cu in the slag is high. Quantifying the amount of PTEs contamination in soil and identifying potential sources of contamination is vital for soil environmental management. In the present investigation, the pollution levels of 8 PTEs in the Qinling molybdenum tailings intensive area were quantitatively identified. Additionally, an integrated source-risk method was adopted for resource allocation and risk assessment based on the PMF model, the ecological risk, and the health risk assessment model. The mean concentrations of Cu, Ni, Pb, Cd, Cr, Zn, As, and Hg in the 80 topsoil samples ranged from 0.80 to 13.38 times the corresponding background values; notably high levels were observed for Pb and Hg. The source partitioning results showed that PTEs were mainly affected by four pollution sources: natural and agricultural sources, coal-burning sources, combined transport and mining industry sources, and mining and smelting sources. The health risk assessment results revealed that the risks of soil PTEs for adults are acceptable, while the risks for children exceeded the limit values. The obtained results will help policymakers to obtain the sources of PTEs of tailing ponds intensive area. Moreover, it provides priorities for the governance of subsequent pollution sources and ecological restoration.
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Affiliation(s)
- Liyuan Zhang
- School of Water and Environment, Chang'an University, Xi'an, China
- Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang'an University, Xi'an, China
- Key Laboratory of Eco-Hydrology and Water Security in Arid and Semi-Arid Regions of Ministry of Water Resources, Chang'an University, Xi'an, China
| | - Yuxi Zhu
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Yanan Zhang
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Jiahao Zhong
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Jiangwei Li
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Shitong Yang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Weiyuan Ta
- Shaanxi Environmental Investigation and Assessment Center, Xi'an, China
| | - Yue Zhang
- School of Architecture, Chang'an University, Xi'an, China.
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Xu H, Ta W, Yang L, Feng R, He K, Shen Z, Meng Z, Zhang N, Li Y, Zhang Y, Lu J, Li X, Qu L, Ho SSH, Cao J. Characterizations of PM 2.5-bound organic compounds and associated potential cancer risks on cooking emissions from dominated types of commercial restaurants in northwestern China. Chemosphere 2020; 261:127758. [PMID: 32736246 DOI: 10.1016/j.chemosphere.2020.127758] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/28/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
Cooking emissions are both indoor and outdoor sources for fine particulate matter (PM2.5) but their contributions are often ignored. The PM2.5-bound organic compounds, including alkanols, alkanes, monocarboxylic acids, dicarboxylic acids, and polycyclic aromatic hydrocarbons (PAHs) were determined in the emissions from the most popular types of restaurants in the capital city of northwestern China. The mean concentration of total quantified organic compounds (ΣPM_O) ranged from 1112 to 32,016 ng m-3, with the maximum for the Chinese barbecue restaurants. The ΣPM_O accounted for an average of 11% of PM2.5 mass, demonstrating their significances in the cooking emissions. Hexadecanoic acid (C16) and 1-hexadecanol (C16) were considered as the tracers for stir-frying, steaming, and boiling which are usually applied in the traditional Chinese cuisines; 1-undecanol (C11), 9-fluorenone, and indeno[1,2,3-cd]pyrene were found to be potential markers for grilling and deep-frying which are widely applied in the Western style cooking method. The PAH diagnostic ratios also illustrated their representatives to distinguish the emissions from traditional Chinese cuisines and the Western-style restaurants. The estimated carcinogenic risks for the restaurants that consumed a large amount of oils and employed high temperature cooking methods (e.g., barbecuing and deep-frying) were 2.6-4.2 times exceeded the international safety limit. The organic profiles obtained in this study could be contributed to refine PM2.5 source apportionment in urban areas in northwestern China. The estimations of potential cancer risks urge the establishment of more stringent legislations to protect the health of the catering staffs.
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Affiliation(s)
- Hongmei Xu
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; SKLLQG, Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China.
| | - Weiyuan Ta
- Shaanxi Environmental Survey and Assessment Center, Xi'an, 710054, China
| | - Lin Yang
- Shaanxi Environmental Survey and Assessment Center, Xi'an, 710054, China
| | - Rong Feng
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Kailai He
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Zhenxing Shen
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Zhaojun Meng
- Shaanxi Environmental Survey and Assessment Center, Xi'an, 710054, China
| | - Ningning Zhang
- SKLLQG, Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Yaqi Li
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yue Zhang
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jiaqi Lu
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xuan Li
- Xi'an Environmental Monitoring Centre, Xi'an, 710121, China
| | - Linli Qu
- Hong Kong Premium Services and Research Laboratory, Kowloon, Hong Kong, China
| | - Steven Sai Hang Ho
- Hong Kong Premium Services and Research Laboratory, Kowloon, Hong Kong, China; Division of Atmospheric Sciences, Desert Research Institute, Reno, NV89512, United States.
| | - Junji Cao
- SKLLQG, Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
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Liu Y, Ta W, Cherubini P, Liu R, Wang Y, Sun C. Elements content in tree rings from Xi'an, China and environmental variations in the past 30years. Sci Total Environ 2018; 619-620:120-126. [PMID: 29145049 DOI: 10.1016/j.scitotenv.2017.11.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/07/2017] [Accepted: 11/07/2017] [Indexed: 05/21/2023]
Abstract
Using inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES), the characteristics of chemical elements were analyzed in white poplar (Populus bonatii Levl.) and ailanthus (Ailanthus altissima (Mill.) Swingle) from three sites in the town of Xi'an, China. The results indicated that the concentration variations of Pb and Cd in tree rings were consistent with that of the environment where the trees were growing. P and Zn were translocated within tree rings to a certain degree, which led to an inaccurate pollution reconstruction. We also found that white poplar had a stronger absorptive capacity of Cd and Zn than ailanthus, which could make white poplar better as a species in environmental remediation. From this research we can see the great potential of tree rings for studying the history of different element pollution in the environment, showing that dendrochemical methods could be used as a powerful component in environmental monitoring programmes, to reconstruct past pollution history at the time when monitoring systems were not yet installed.
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Affiliation(s)
- Yu Liu
- Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
| | - Weiyuan Ta
- Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; Shaanxi Appraisal Center for Environmental Engineering, Xi'an 710065, China
| | - Paolo Cherubini
- WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Ruoshi Liu
- Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yanchao Wang
- Department of Geography, Xingtai University, Xingtai 054001, China
| | - Changfeng Sun
- Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
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