Characteristics of heavy metal migration in farmland

Tang, Xuefang; Wu, Yong; Han, Litao; Lan, Zhen; Rong, Xingping

doi:10.1007/s12665-022-10429-2

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…This suggests that Cu and Cd in soil may have different sources, or distinct migration characteristics due to the reactions between PTEs and other materials (such as iron oxides, SOM, AP, etc.) in the soil [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Spatial Differentiation Characteristics and Evaluation of Cu and Cd in Paddy Soil around a Copper Smelter

Ding

et al. 2023

Toxics

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To accurately evaluate the distribution and bioavailability of potentially toxic elements (PTEs) such as Cu and Cd in farmlands near a copper smelter, we determined the total concentrations (Cu-T and Cd-T), various speciation concentrations of Cu and Cd and physicochemical properties of 18 paddy soil (or colloid) samples in Guixi town, Jiangxi province, China. The results showed that the concentrations of Cu-T and Cd-T in the soil around the smelter far exceeded the standard limits. Specifically, Cu ranged from 97.47 to 1294.63 mg·kg−1, with a coefficient of variation (CV) of 0.95; Cd ranged from 0.14 to 9.06 mg·kg−1, and the CV was 1.68. Furthermore, the pollution of PTEs continued to accumulate, posing a significant risk to the environment and human health. The findings from the analysis of soil and colloid indicated that the distribution characteristics of Cu and Cd speciations did not align with the total concentrations. The highest pollution points were found to be shifted to the residual fraction of Cu, organic fraction, and crystalline iron oxide fraction of Cd in soil. The dominant fraction of Cu in colloid was the amorphous iron oxide fraction, whereas Cd was the crystalline iron oxide fraction. The assessment of Cu and Cd migration (MR) revealed that Cd posed a greater ecological risk. Further examination of the properties of iron oxides in soil and colloid revealed that they played a crucial role in the migration and transformation of soil PTEs.

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Section: Resultsmentioning

confidence: 99%

Spatial Differentiation Characteristics and Evaluation of Cu and Cd in Paddy Soil around a Copper Smelter

Ding

et al. 2023

Toxics

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“…The BCR method has found extensive application in numerous studies examining the quality of sewage sludge and heavy-metal-contaminated soils. This technique facilitates the assessment of metal mobility within the tested matrix and the estimation of the potential for contaminant dispersion into the environment [28][29][30]. Figure 2 illustrates the steps involved in the BCR procedure.…”

Section: Heavy Metal Speciationmentioning

confidence: 99%

Analysis of Heavy Metal Contaminants and Mobility in Sewage sludge-soil Mixtures for Sustainable Agricultural Practices

Janaszek,

Kowalik

2023

Water

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This study presents a comprehensive analysis of the potential utilization of sewage sludge in agriculture, focusing on the assessment of heavy metal contaminants and their mobility in sewage sludge-soil mixtures. The innovative approach of investigating heavy metal fractions in these mixtures sheds light on their environmental implications. In this study, sludge and soil samples from three different soil categories were collected, and the mobility of heavy metals was investigated using sequential BCR analysis. A thorough assessment of the risk of environmental contamination associated with the agricultural use of sludge was also carried out. This study included the calculation of various risk indicators, such as the Geoaccumulation Index of heavy metals in soil (Igeo), the risk assessment code (RAC), and the author’s element mobility ratio (EMR), which included a comparison of the overall metal concentrations in sludge, soil, and mixtures. This study demonstrates that the key to using sludge is to know the form of mobility of the metals present in the sludge and how they behave once they are introduced into the soil.

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“…The migration pathways of heavy metals refer to how the pollution elements migrate from the source to the soil. And they can be mainly classified into physical and chemical migration [25]. Chemical migration refers to the migration of elements through dissolution [26].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical migration refers to the migration of elements through dissolution [26]. Physical migration is mainly the migration of elements with the transport of detritus, including hydraulic transport and wind transport [25,27]. Research on the combination characteristics of elements, such as correlation and principal component analysis, can identify the possible source of heavy metals and the contribution rate of each source according to the combination characteristics of elements [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China

Wang,

Xu,

et al. 2024

Minerals

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The exploitation of iron ore could cause heavy metals pollution in the soils, which threatens the ecosystem and human health. In this study, soil, stream sediment, tailings, rock, and atmospheric deposition samples were collected from an iron mine in Baotou City. The concentrations of As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, Al2O3, CaO, K2O, MgO, Na2O, SiO2, and Fe2O3, as well as the mineral composition and heavy metal speciation of the samples, were analyzed for pollution assessment and source identification of heavy metals. The results reveal that the concentration of Cu in the soils was significantly higher than the background value, and an unpolluted to moderately polluted state was the main pollution level. By analyzing the relationship between Cu/Al2O3 and CaO in different samples, as well as the characteristics of the chemical index of alteration (CIA), mineral composition, and the chemical speciation of Cu in soils and profiles, the results suggest that tailings were the source of Cu pollution in soils. The distribution characteristics of Cu and CaO in stream sediments indicated that hydraulic transport may be one of the main migration pathways. In addition, wind transport may also be a pathway of migration.

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Characteristics of heavy metal migration in farmland

Cited by 8 publications

References 27 publications

Spatial Differentiation Characteristics and Evaluation of Cu and Cd in Paddy Soil around a Copper Smelter

Spatial Differentiation Characteristics and Evaluation of Cu and Cd in Paddy Soil around a Copper Smelter

Analysis of Heavy Metal Contaminants and Mobility in Sewage sludge-soil Mixtures for Sustainable Agricultural Practices

Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China

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