Spatial variability and temporal changes in the trace metal content of soils: implications for mine restoration plan

Chandra, Rachna; Prusty, B. Anjan Kumar; Azeez, P. A.

doi:10.1007/s10661-014-3648-2

Cited by 14 publications

(6 citation statements)

References 25 publications

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“…In the soil covered with vegetation, water conditions change, which has been already mentioned above, determine the mobility of metals in soils and their susceptibility to leaching. Nowack et al (2010) and Chandra et al (2014) suggest that plant activity kept the metals in a more soluble form, and that the vegetation has an effect on metal availability. In our research, it was diffi cult to clearly determine the effect of willow and maize on changes of metal concentration in the soil due to their leaching, as there were no comparable treatments without plants.…”

Section: Discussionmentioning

confidence: 99%

Archives of Environmental Protection

Stanisławska-Glubiak¹,

Korzeniowska²

2018

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The aim of this study was to investigate the dynamics of changes in the metal concentrations in the soils contaminated with Cd, Pb, and Zn during a 5 year period. Additionally the purpose included assessment of the suitability of 1 M HCl to control soil contamination with heavy metals compared to using of aqua regia method. The study was conducted in concrete-framed microplots, fi lled with two soils (sandy and silty), which were artifi cially co-contaminated with Cd, Pb and Zn. There was a gradual decrease in these concentrations during the 5 year period. The concentrations of the metals extracted with 1 M HCl were very similar to the total concentrations. After 5 years of research, the topsoil had the smallest decrease in Pb concentration, which for the sandy, and silty soils was, respectively, by 7% and 9% in relation to the initial value. The concentrations of Cd and Zn decreased by up to about 35% in the sandy soil and by about 20% in the silty soil. Sandy soil contamination with metals poses a potentially higher threat to humans and the environment than silty soil contamination. Therefore, the examination of the sandy soils contamination, as well as of the groundwater occurring in these areas, should be carried out at least once for 5 years. It has been shown that the analytical method using aqua regia can be replaced by 1 M HCl method to track changes of metals concentration in the soil, that occur over time period.

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Section: Discussionmentioning

confidence: 99%

Archives of Environmental Protection

Stanisławska-Glubiak¹,

Korzeniowska²

2018

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“…In total, 144 samples were collected from the eight identified wetlands. Bed sediment samples, collected from 5 to 10 cm depth, air-dried in the laboratory after being transported in resealable polythene bags, followed by oven-drying at 50–60 °C until constant weight, and homogenized using a mortar and pestle 51 . Finally, the homogenized samples were sieved using a 2 mm mesh sieve before being placed in clean plastic containers 52 .…”

Section: Methodsmentioning

confidence: 99%

Assessment of environmental and carcinogenic health hazards from heavy metal contamination in sediments of wetlands

Panda,

Mohanta,

Paul

et al. 2023

Sci Rep

Self Cite

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Sediment contamination jeopardizes wetlands by harming aquatic organisms, disrupting food webs, and reducing biodiversity. Carcinogenic substances like heavy metals bioaccumulate in sediments and expose consumers to a greater risk of cancer. This study reports Pb, Cr, Cu, and Zn levels in sediments from eight wetlands in India. The Pb (51.25 ± 4.46 µg/g) and Cr (266 ± 6.95 µg/g) concentrations were highest in Hirakud, Cu (34.27 ± 2.2 µg/g) in Bhadrak, and Zn (55.45 ± 2.93 µg/g) in Koraput. The mean Pb, Cr, and Cu values in sediments exceeded the toxicity reference value. The contamination factor for Cr was the highest of the four metals studied at Hirakud (CF = 7.60) and Talcher (CF = 6.97). Furthermore, high and moderate positive correlations were observed between Cu and Zn (r = 0.77) and Pb and Cr (r = 0.36), respectively, across all sites. Cancer patients were found to be more concentrated in areas with higher concentrations of Pb and Cr, which are more carcinogenic. The link between heavy metals in wetland sediments and human cancer could be used to make policies that limit people's exposure to heavy metals and protect their health.

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“…For example, Asfandyar Shahab [11] et al collected 114 papers, including 61 cities in 21 countries, and summarized the worldwidepollution characteristics of heavy metals in road dust through the study of heavy-metal concentrations, sources, distribution, and health risks; Bin Guo [12] et al did ecological risk assessment and source analysis of heavy metals in the study area. While the spatial heterogeneity of heavy metals has been less studied, for example, Qin Zhiheng [13] et al used Moran's I index and semi-variance function theory to reveal the spatial correlation of soil Cd content in the study area and its variability pattern in spatial structure, and Li Chuanzhang [14] et al, and Chandra [15] et al, used the coefficient of variation and semi-variance function theory to explore the strength of soil heavy-metal variability and the range of spatial autocorrelation in the study area. However, none of the above studies considered the clustering characteristics at the local scale, and coupled with the possibility of spatial variability of heavy metals in urban surface dust, few studies have been reported on the use of Anselin Local Moran's I index to analyze the spatial-clustering characteristics of heavy-metal contents in urban road dust.…”

Section: Introductionmentioning

confidence: 99%

Spatial-Heterogeneity Analysis of the Heavy Metals Cd and Pb in Road Dust in the Main Urban Area of Harbin

Cheng

et al. 2022

Sustainability

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To provide a scientific basis for pollution prevention and control of the urban environment, the current status of heavy-metal pollution in road dust in Harbin was studied. In total, 63 road dust samples in the main urban area of Harbin were collected, and the contents of Cd and Pb, two representative heavy metals, were detected. Using the Moran Index coupled with semi-variable function and geostatistical methods, the spatial correlation, variation structure, and distribution pattern were analyzed, and the estimated probability of the heavy metals exceeding the safety standard was determined. The study showed that: The mean concentrations of Cd and Pb were higher than the background values in Heilongjiang province, and both exhibited moderate variability, while the coefficient of variation of Cd was larger than that of Pb; Cd was weakly correlated in space and randomly distributed, Pb was moderately correlated in space and exhibited good spatial structure, and both were spatially aggregated. The optimal model for fitting the variance function showed that Cd was a spherical model, and Pb was an exponential model. The variation of Cd was mainly influenced by human factors, and the variation of Pb was influenced by both structural and random factors. The optimized interpolation results of the variance function had high accuracy, and the spatial distribution of Cd was elliptical, whereas the distribution of Pb was stripe-shaped, Cd was mainly influenced by traffic factors, such as industrial enterprise distribution and road painting, while Pb was influenced by natural factors such as river sediment or the study area belonging to a geologically high background area, in addition to the above factors. The estimated probabilities indicate a higher potential risk of Cd in the northeastern part of the study area.

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Spatial variability and temporal changes in the trace metal content of soils: implications for mine restoration plan

Cited by 14 publications

References 25 publications

Archives of Environmental Protection

Archives of Environmental Protection

Assessment of environmental and carcinogenic health hazards from heavy metal contamination in sediments of wetlands

Spatial-Heterogeneity Analysis of the Heavy Metals Cd and Pb in Road Dust in the Main Urban Area of Harbin

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