Heavy metals speciation with prediction model for heavy metal mobility and risk assessment in mine-affected soils

2020 ◽  
Author(s):  
Jaeyoung Choi ◽  
Yongtae Ahn
Keyword(s):  
Heavy Metals ◽  
Chemical Speciation ◽  
Correlation Coefficients ◽  
Carcinogenic Risk ◽  
Metal Mobility ◽  
Mobility Prediction ◽  
Extraction Techniques ◽  
Heavy Metal Mobility ◽  
Local Residents ◽  
Total Concentrations

<p>Heavy metals from mines affect soil and groundwater, cause aand severely impact on the health of local residents. The soil samples were characterized the for distribution, and by the chemical speciation method , and then estimated the human health risks of the two mine-affected soils after stabilization were estimated. Two extraction techniques (Tessier and Wenzel methods) were applied to fractionate metals, such as arsenic (As) and zinc (Zn), to quantify the chemical status of metals in the soils. The mobility of As and Zn was predicted using ASTM test and sequential extraction (Tessier and Wenzel) methods results. The correlation coefficients of As and Zn mobility prediction using Tessier and Wenzel Fraction 1 were (0.920 and 0.815), respectively. Sum The of fractionsum of fractions (F1+F2+F3) showed the highest correlation coefficients value and F value for mobility prediction of both As and Zn. The hazardous indices (HI) for non-carcinogenic risk and carcinogenic risk (CR) to humans were evaluated according to the pseudo-total concentrations of metal in soils. The CR values of carcinogenic for As were within the ranges from 1.38 × 10<sup>-4</sup> to 1.25 × 10<sup>-3</sup> and 3.71 × 10<sup>-4</sup> to 3.35 × 10<sup>-3</sup> for both Young Dong (YD) and Dea San (DS), respectively. The HI for non-carcinogenic risk was highest for As in the YD (2.77) and DS (7.46) soils, which covered approximately 96 and 84% of HI, respectively. In summary, the contribution of As to risk from heavy metals was dominant.</p>

scholarly journals Mobility of lead, zinc and cadmium in alluvial soils heavily polluted by smelting industry

2011 ◽  
Vol 51 (No, 7) ◽  
pp. 316-321 ◽  
Author(s):  
A. Vaněk ◽  
L. Borůvka ◽  
O. Drábek ◽  
M. Mihaljevič ◽  
M. Komárek
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Czech Republic ◽  
Extraction Procedure ◽  
Metal Mobility ◽  
Alluvial Soils ◽  
Mobility Factor ◽  
Heavy Metal Mobility ◽  
Profile Distribution ◽  
Lead Zinc

In order to determine the mobility of Pb, Zn and Cd in soils from the Př&iacute;bram region (Czech Republic) heavily contaminated by metallurgy, two profiles of alluvial soils were closely studied. Total contents of heavy metals were determined after digestion with a mixture of HF and HClO<sub>4</sub>. Heavy metal mobility was assessed using the mobility factor (MF) that represents the proportion of heavy metals present in the exchangeable and carbonate bound fraction based on the Tessier&rsquo;s sequential extraction procedure. The MF ranged from 2 to 46% for lead, 19 to 62% for zinc and 61 to 94% for cadmium. The profile distribution of zinc and cadmium showed a variable development with depth, which is caused by high amounts of these metals present in labile forms. The profile distribution of lead (the least mobile metal) is characterized by a gradual decrease with depth. The results indicate a higher contamination of the soil profile situated 2.5 km away from the smelter in comparison with the profile in its close vicinity. This fact confirms the existence of extreme fluvial contamination.

Total concentrations and chemical speciation of heavy metals in liquefaction residues of sewage sludge

2011 ◽  
Vol 102 (5) ◽  
pp. 4104-4110 ◽  
Author(s):  
Xingzhong Yuan ◽  
Huajun Huang ◽  
Guangming Zeng ◽  
Hui Li ◽  
Jingyu Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Chemical Speciation ◽  
Total Concentrations

scholarly journals Spatial Distribution, Chemical Speciation and Health Risk of Heavy Metals from Settled Dust in Qingdao Urban Area

Atmosphere ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 73 ◽  
Author(s):  
Hongxia Xu ◽  
Yan Wang ◽  
Ruhai Liu ◽  
Mingyu Wang ◽  
Yanyan Zhang
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Health Risk ◽  
Urban Area ◽  
Chemical Speciation ◽  
Construction Materials ◽  
Principal Component ◽  
Carcinogenic Risk ◽  
Settled Dust ◽  
Old City

Settled dust samples were collected from Qingdao urban area to analyze the spatial distribution, chemical speciation and sources of metals, and to evaluate the health risk of metals from atmospheric dust. The average contents of Hg, Cd, Cr, Cu, Ni, Pb and Zn in the atmospheric settled dust of Qingdao were 0.17, 0.75, 153.1, 456.7, 60.9, 176.0 and 708.3 mg/kg, respectively, which were higher than soil background values. The mean exchangeable metal and carbonated-associated fraction proportions of Cd, Zn and Pb were 43.6%, 26.1% and 15%, which implies that they have high mobility and bioavailability. Higher contents of heavy metals appeared in old city areas because of the historical accumulation of metals. Principal component analysis showed that combustion sources partially contributed to Pb, Zn and other trace metals. Hg, Pb and Zn mainly originated from business, human activities and municipal construction. Cd and Cu from settled dust of the old city originated from the erosion and ageing of construction materials. The non-carcinogenic risk rankings for the seven determined heavy metals were ingestion > dermal > inhalation. Cd, Cr and Ni from settled dust showed a low carcinogenic risk. The health risks of Cr, Cu and Pb were higher in old city areas and, therefore, need special attention.

Chemical Speciation and Heavy Metal Mobility in Contaminated Marine Sediments

2009 ◽  
Vol 6 (6) ◽  
pp. 102169 ◽  
Author(s):  
Ioanna Damikouka ◽  
Alexandra Katsiri ◽  
R. Galvez ◽  
M. Dyer ◽  
S. W. Dean
Keyword(s):  
Heavy Metal ◽  
Marine Sediments ◽  
Chemical Speciation ◽  
Metal Mobility ◽  
Heavy Metal Mobility ◽  
Contaminated Marine Sediments

scholarly journals Transfer of Some Toxic Metals from Soil to Honey Depending on Bee Habitat Conditions

2020 ◽  
Vol 24 (1) ◽  
pp. 49-59
Author(s):  
Monika Tomczyk ◽  
Grzegorz Zaguła ◽  
Czesław Puchalski ◽  
Małgorzata Dżugan
Keyword(s):  
Heavy Metals ◽  
Toxic Metals ◽  
Soil Acidity ◽  
Background Level ◽  
Metal Mobility ◽  
Human Consumption ◽  
Habitat Conditions ◽  
Natural Background ◽  
Heavy Metal Mobility ◽  
The Impact

AbstractThe transfer of toxic metals from soil to honey was studied based on two different areas of the Podkarpackie region located in the south-east part of Poland: U-urbanized and E-ecologically pure. The metal content was determined using the ICP-OES method with prior microwave mineralization of the soil, plant (goldenrod, dandelion, rapeseed, tilia and fir), bee bodies and honey samples collected from 10 sampling points (U-5 and E-5). The impact of soil pH on heavy metal mobility was also evaluated. It was found that Podkarpackie soils are less contaminated with heavy metals as compared to other regions of Poland and only in the case of cadmium an enhancement of the natural background level was observed. The migration of heavy metals, especially cadmium, in the soil-plant-bee-honey food chain was accelerated by soil acidity (p<0.05). The influence of human activity (region development) on heavy metals concentrations was not significant (p>0.05). Based on bioaccumulation factors, goldenrod and dandelion plants were confirmed as cadmium accumulators. It was also confirmed that the bodies of bees act as an effective barrier to the migration of heavy metals from the environment to honey, due to this, honey is free from these metals and safe for human consumption.

scholarly journals Urban Wastewater Management in Focus of Heavy Metal Contamination

2018 ◽  
Vol 6 (1) ◽  
pp. 103-113
Author(s):  
Marton Czikkely ◽  
Csaba Fogarassy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Metal Mobility ◽  
Biogenic Element ◽  
Wastewater Management ◽  
Urban Wastewater ◽  
Limit Value ◽  
Low Concentrations ◽  
Heavy Metal Mobility

Abstract In our study, we focused on urban wastewater management, with special regard to the problems caused by heavy metal contaminations. Heavy metals function at low concentrations as a biogenic element, but at the same time in higher amounts (especially above the limit value) are considered as pollutants. We determined the basic wastewater treatment problem: which is the main problem of heavy metal contaminated urban wastewaters and how could eliminate heavy metals. We focused on wastewater origin heavy metal mobility in environment and effect (risk) on human health. In the following, we undertook to analyse urban wastewater in this direction.

Heavy metals pollution potentials in the National Iron Ore Mining Company, Itakpe

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Cyril Ocheri ◽  
A. D. Omah ◽  
C. N. Mbah ◽  
R. E. Njoku ◽  
N. A. Urama ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sea Level ◽  
Toxic Elements ◽  
Iron Ore ◽  
Pollution Potential ◽  
Extraction Techniques ◽  
Mining Company ◽  
Mining Sites ◽  
Metals Pollution ◽  
Heavy Metals Pollution

Heavy metals pollution potential in National Iron Ore Mining Company, Itakpe was investigated. Two mining sites located at the east mining pits such as M3O, which is 370 m above sea level and M2O, which is 350 m above sea level were studied.  Sequential extraction techniques was utilised to examine the distribution effect of the heavy metals pollution potential on the environment. Twelve representative (six-soil, two-sediment, two-plant and two-water) samples were collected, pre-treated and prepared for this study. The atomic absorption spectrometer was used to analyse the concentration of the metals after the sequential and single-stage extractions were determined. Results showed that Chromium, Arsenic, Cadmium and Copper are more bioavailable in the study area than Lead and Iron. This findings indicate that human, animals and plants are exposed to toxic elements (metals and metalloids).

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