Potentially Toxic Metals in Soil and Dominant Plants from Tonglushan Cu–Fe Deposit, Central China

2018 ◽  
Vol 102 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Huang Zheng ◽  
Zezhou Zhang ◽  
Xinli Xing ◽  
Tianpeng Hu ◽  
Chengkai Qu ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Central China ◽  
Potentially Toxic Metals

scholarly journals Risk Assessment of Contamination by Potentially Toxic Metals: A Case Study in the Vicinity of an Abandoned Pyrite Mine

Minerals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 783
Author(s):  
Tingting Ma ◽  
Wei Zhou ◽  
Xiao Yang ◽  
Peter Christie ◽  
Yongming Luo
Keyword(s):  
Environmental Quality ◽  
Toxic Metals ◽  
Hazard Quotient ◽  
Potential Ecological Risk ◽  
Incidence Rates ◽  
Central China ◽  
Potentially Toxic Metals ◽  
Mining Areas ◽  
Endemic Diseases ◽  
High Incidence

Abandoned mining areas can display soil and water pollution and also a high incidence of endemic diseases. Here, based on preliminary results on mental retardation and high incidence rates of cancers, we investigate the contamination status and potential ecological risk at an abandoned pyrite mine located in Xianju village, Hubei province, central China. The study focused on the three potentially toxic metals As, Pb, and Zn and four other common elements, including Ca, Fe, S, and Se. Soil samples were collected from 12 sites and leachate seeping from five sites. Leachates were strongly acidic compared to the soil, with pH values <3.22. Soil As and Se concentrations exceeded the Chinese Grade II standards for soil environmental quality (GB 15618-2009) (30 and 3 mg·kg−1, respectively), ranging from 33.6 ± 0.7 to 78.2 ± 1.0 mg As·kg−1 dry matter (DM) and 5.3 ± 0.8 to 17.1 ± 1.4 mg Se·kg−1 DM. Arsenic, Fe, Se, and S in leachates all exceeded the Chinese Grade III standard for surface water environmental quality (GB 3838-2002) (0.1, 0.3, 0.03, and 1.0 mg·L−1). The potential ecological risks from Pb and Zn in soils were low, but As in soils and leachates represented a moderate or strong risk to children according to the Nemerow index and hazard quotient. Soil replacement combined with further remediation measures is required to remediate the contaminated area.

scholarly journals Accumulation of Potentially Toxic Metals in Egyptian Alluvial Soils, Berseem Clover (Trifolium alexandrinum L.), and Groundwater after Long-Term Wastewater Irrigation

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 713
Author(s):  
Ahmed S. Abuzaid ◽  
Hossam S. Jahin ◽  
Amany A. Asaad ◽  
Mohamed E. Fadl ◽  
Mohamed A. E. AbdelRahman ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Translocation Factor ◽  
Wastewater Irrigation ◽  
Alluvial Soils ◽  
Trifolium Alexandrinum ◽  
Potentially Toxic Metals ◽  
Groundwater Samples ◽  
Safe Limits ◽  
Berseem Clover ◽  
Irrigated Soils

The reduced availability of water resources in Egypt has imposed the need to intensify the use of wastewater for crop irrigation in the alluvial soils of anthropogenic origin. Relevant effects can derive from contents of potentially toxic metals (PTMs) in supply resources soils, crops, and groundwater in these areas. For this reason the PTM content has to be monitored to evaluate and minimize health hazards. Therefore, in this context, two areas of the SE Nile Delta subjected to 25 year of wastewater irrigation, using agricultural drainage water (ADW) and mixed wastewater (MWW) were chosen and compared with a nearby site irrigated with Nile freshwater (NFW). At each of the three sites, ten samples of irrigation water, topsoil, berseem clover (Trifolium alexandrinum L.) plants, and seven groundwater samples were collected and analyzed for Cr, Co, Cu, Pb, Ni, and Zn. Results indicate that the total contents of Co, Cu, Ni, and Zn in soils collected from the three sampling sites and Pb in the MWW-irrigated soils were higher than their average natural contents in the earth’s crust, indicating potential risks. The DTPA-extractable contents of Cu in the three sites, in addition to Pb and Zn in the MWW-irrigated soils, exceeded the safe limits. The MWW-irrigated soils showed a considerable degree of metal contamination, while the NFW- and ADW-irrigated soils showed moderate and low levels of contamination, respectively. The contents of the six PTMs in the three sites showed low individual ecological risks, except for Pb in the MWW-irrigated soils that showed a moderate risk; however, the overall ecological risk remained low in all samples. The values of Co, Cu, and Ni in berseem shoot in addition to Pb from the MWW-irrigated soils were over the maximum permissible levels for animal feeding. Values of root-to-shoot translocation factor were lower than 1.0 for Cr, Co and Ni but higher than 1.0 for Cu, Pb, and Zn. Berssem plant is a good candidate for phytofiltration of Cr, Co and Ni, while for extracting Cu, Pb and Zn from polluted soils. The groundwater samples collected from the three sampling sites showed lower metal concentrations than the safe limits for drinking standards. Further remediation studies should be taken into account to alleviate potential environmental and health-related risks when using supply resources different from freshwater.

scholarly journals Microscopic Fungi in Big Cities: Biodiversity, Source, and Relation to Pollution by Potentially Toxic Metals

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1471
Author(s):  
Maria V. Korneykova ◽  
Anastasia S. Soshina ◽  
Andrey I. Novikov ◽  
Kristina V. Ivashchenko ◽  
Olesya I. Sazonova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Toxic Metals ◽  
Road Dust ◽  
Airborne Fungi ◽  
Potentially Toxic Metals ◽  
Opportunistic Fungi ◽  
Air Quality Assessment ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

For the first time, a mycological analysis of outdoor urban environment (air, leaves, sealed surfaces) was carried in the cities of subarctic (Murmansk) and temperate (Moscow) climatic zones. The chemical composition of dust deposited on leaves of dominant tree species was taken as an indicator of the air quality. Assessment of the complex impact of factors (climate zone, type of substrate, anthropogenic load) on the quantitative and qualitative parameters of mycobiome was performed. Compared to Moscow, Murmansk was characterized by an increased number and concentrations of pollutants in the deposited dust. The number of culturable airborne fungi in Murmansk was substantially lower than in Moscow. Half of the species belonged to the opportunistic in both cities. Most dangerous opportunistic fungi were absent in the air of recreational zones but present on leaves surface and in road dust in all assessed zones of the cities. Dust chemical composition affected the diversity of fungi species. While the relationship of biological parameters with concentration of potentially toxic metals was generally negative, Cd increased the fraction of opportunistic fungi in road dust. The study revealed an importance of substrate in determining the sensitivity of outdoor mycobiome to pollution and highlighted its biological characteristics sensitive to climate.

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