Assessment of agricultural soil contamination by potentially toxic metals dispersed from improperly disposed tailings, Kombat mine, Namibia

2014 ◽  
Vol 144 ◽  
pp. 409-420 ◽  
Author(s):  
Marta Mileusnić ◽  
Benjamin Siyowi Mapani ◽  
Akalemwa Fred Kamona ◽  
Stanko Ružičić ◽  
Isaac Mapaure ◽  
...  
Keyword(s):  
Soil Contamination ◽  
Toxic Metals ◽  
Agricultural Soil ◽  
Potentially Toxic Metals

Deposition of potentially toxic metals in the soil from surrounding cement plants in a karst area of Southeastern Brazil

2021 ◽  
Author(s):  
Thiago Augusto da Costa e Silva ◽  
Marcos de Paula ◽  
Washington Santos Silva ◽  
Gustavo Augusto Lacorte
Keyword(s):  
Soil Contamination ◽  
Toxic Metals ◽  
Environmental Pollutants ◽  
Carcinogenic Risk ◽  
Soil Samples ◽  
Karst Area ◽  
Southeastern Brazil ◽  
Karst Region ◽  
Potentially Toxic Metals ◽  
Cement Production

Abstract Cement factories are the main sources of environmental pollutants among the different industrial activities, including soil contamination by potentially toxic metals and the Karst region of Southeastern Brazil is known for the implementation of large cement producing facilities. This study aims to evaluate whether there is an increase in the concentration of PTM in the soil surrounding the cement plants and to estimate their harmfulness to both local human population and environment. In total, 18 soil samples were collected from the surroundings of three cement plants as well as four soil samples from areas outside the influence of cement plants and concentration of the following potentially toxic metals (PTM) were estimated: Cd, Pb, Co, Cu, Cr, Mn, Ni, and Zn. The results revealed that all PTM concentrations from cement plant surroundings were significantly higher than PTM concentrations from control areas and no PTM concentrations from CPS or CA soil samples exceeded national and global contamination thresholds. However, Igeo Index indicated low level soil contamination by Pb, Cu and Cr and high levels for Co. We could not verify significant Non-carcinogenic risk to health for any soil sample, but carcinogenic risk analysis revealed different levels of carcinogenic risk among the sampled locations, for both adults and children. Our results indicate that exclusively evaluating the concentration of potentially toxic metals is not enough to verify the potential harmful effects of cement production for the surrounding population. Here we evidence that additional indices, based on both contamination indices and health risk assessments, should be considered for better evaluation of the impacts of cement production activity.

scholarly journals Deposition of Potentially Toxic Metals in the Soil from Surrounding Cement Plants in a Karst Area of Southeastern Brazil

Conservation ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 137-150
Author(s):  
Thiago Augusto da Costa Silva ◽  
Marcos de Paula ◽  
Washington Santos Silva ◽  
Gustavo Augusto Lacorte
Keyword(s):  
Soil Contamination ◽  
Toxic Metals ◽  
Environmental Pollutants ◽  
Carcinogenic Risk ◽  
Soil Samples ◽  
Karst Area ◽  
Southeastern Brazil ◽  
Karst Region ◽  
Potentially Toxic Metals ◽  
Cement Production

Cement factories are the main sources of environmental pollutants among the different industrial activities, including soil contamination by potentially toxic metals. The karst region of Southeastern Brazil is known for the implementation of large cement producing facilities. This study aims to evaluate whether there is an increase in the concentration of PTM in the soil surrounding the cement plants and to estimate their harmfulness to both local human population and environment. In total, 18 soil samples were collected from the surroundings of three cement plants as well as four soil samples from areas outside the influence of cement plants and concentration of the following potentially toxic metals (PTM) were estimated: Cd, Pb, Co, Cu, Cr, Mn, Ni, and Zn. The results revealed that all PTM concentrations from cement plant surroundings were significantly higher than PTM concentrations from control areas and no PTM concentrations from CPS or CA soil samples exceeded national and global contamination thresholds. However, Igeo Index indicated low level soil contamination by Pb, Cu, and Cr, as well as high levels for Co. We could not verify significant non-carcinogenic risk to health for any soil sample, but carcinogenic risk analysis revealed different levels of carcinogenic risk among the sampled locations, for both adults and children. Our results indicate that exclusively evaluating the concentration of potentially toxic metals is not enough to verify the potential harmful effects of cement production for the surrounding population. Here we evidence that additional indices, based on both contamination indices and health risk assessments, should be considered for better evaluation of the impacts of cement production activity.

Multivariate Statistical Characterisation of Soil Quality in the Lower Danube River Riparian Areas

2019 ◽  
Vol 70 (7) ◽  
pp. 2392-2397 ◽  
Author(s):  
Violeta-Monica Radu ◽  
Alexandru Anton Ivanov ◽  
Petra Ionescu ◽  
Gyorgy Deak ◽  
Elena Diacu ◽  
...  
Keyword(s):  
Soil Contamination ◽  
Toxic Metals ◽  
Negative Impact ◽  
Graphite Furnace ◽  
Humus Content ◽  
Danube River ◽  
Riparian Areas ◽  
Potentially Toxic Metals ◽  
Multivariate Statistical ◽  
Data Set

Increasing anthropogenic influences on the environment has caused negative changes in natural ecosystems and soil contamination with potentially toxic metals has become a worrying issue at global level, due to the negative impact on the environment and human health. For the purpose of assessing soil contamination in the riparian areas of the Lower Danube River, a number of 144 soil samples were collected twice a year, in the period of June 2013 � December 2016, from 9 monitoring locations, from 0.05 m and 0.3 m depths, and the following indicators: Cr, Cu, Mn, Ni, Pb, Zn, including Ca, Mg, Corg, SO42- and humus content have been monitored. The soil was sampled, conserved and analysed according to the European standards in force. Metal concentrations were determined using flame (FAAS) and graphite furnace (GFAAS) atomic absorption spectrometry after �aqua regia� digestion of dried, homogenised and 0.5 mm sieved soil sub-samples. Comparing the average concentration values of the analysed potentially toxic metals, a decreasing tendency following the order Cr]Pb]Ni]Cu]Zn]Mn was observed and by reporting the average values at the normal limits, the order Zn]Cu]Mn]Ni]Pb]Cr of magnitude was obtained. To investigate possible correlations and interdependencies of potentially toxic metals content in the riparian soil, multivariate statistical methods were used. After applying Principal Component Analysis (PCA), 3 main components were identified, with a combined share of about 74 % of the original data-set variance. It was observed that during the monitoring period the average values of the all monitored elements from the studied soils were slightly below the normal reference values, according to the national legislation.

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.

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 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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