Arsenic geochemistry and mineralogy as a function of particle-size in naturally arsenic-enriched soils

Gerdelidani, Arzhang Fathi; Towfighi, Hasan; Shahbazi, Karim; Lamb, Dane; Choppala, Girish; Abbasi, Sepide; Bari, Abdul; Naidu, Ravi; Rahman, Mohammad Mahmudur

doi:10.1016/j.jhazmat.2020.123931

Cited by 49 publications

(6 citation statements)

References 47 publications

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“…Therefore, a large proportion of total As was still unavailable in the study area although high concentrations of As were observed (35.18 mg kg −1 ). According to previous research, the fraction of As is mainly affected by Fe‐oxides and clay minerals (Gerdelidani et al, 2021). Moreover, the F2 fractions of As accounted for only 3.59%.…”

Section: Resultsmentioning

confidence: 87%

Towards sustainable and efficient land development: Risk of soil heavy metal(loid)s in abandoned gold mines with short‐term rehabilitation and potential value for targeted remediation

et al. 2022

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Recently sustainable and efficient land development and the potential reutilization values of abandoned mines (i.e., industrial, arable, and tourism) have been attracting worldwide attention. However, environmental impacts after rehabilitation practices are often ignored and field data are lacking. What remains unknown is an understanding how the risk of soil trace metal(loid)s (TMs) respond to short-term rehabilitation of abandoned gold mines and the potential value for following targeted remediation. We found that a high level of TM cadmium (Cd) and arsenic (As)] contamination and significant health risk to humans, limited land reutilization in rehabilitation scenarios. Feedback from soil TMs to rehabilitation is of potential value for following targeted remediation. Specifically, (1) the major pollutants we studied were Cd and As. Cadmium poses a considerable ecological risk as evidenced by I geo , contamination factor, E i r and risk assessment code, and a much higher bioavailability evidenced by non-residual fractions (42.42%). Arsenic has the lowest environmental availability with 90.99% in residual fraction; (2) spatial distributions of TMs were similar. Sites with serious contamination were mainly located in the southwest of the study area, close to the abandoned mine; Results of principal component analysis suggested that mining activities were the main anthropogenic pollution sources;(3) there was no non-carcinogenic risk and a higher carcinogenic risk was found in adults than in children. Targeted remediation techniques are needed to mitigate carcinogenic risks posed by As and Cr. This study emphasized the necessity of assessment of soil TMs risk in abandoned gold mines with short-term rehabilitation and offered crucial data utilized to optimize time parameters (short-term) towards sustainable and efficient land development.

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Section: Resultsmentioning

confidence: 87%

Towards sustainable and efficient land development: Risk of soil heavy metal(loid)s in abandoned gold mines with short‐term rehabilitation and potential value for targeted remediation

et al. 2022

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“…5). The bioavailability and toxicity of metals decrease with increasing particle size [30]. (1)After Goher [31] (2) after Kabata-Pendias and Mukherjee [32] (-) No available data __________________________________________________________________________________________________________________ ________________________________________________ Egypt.…”

Section: Physicochemical Characteristicsmentioning

confidence: 99%

Chemical Fractionation and Risk Assessment of Some Heavy Metals in Soils, Assiut Governorate, Egypt

et al. 2021

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Toxic elements behavior in Egyptian soil need more studies for the enhancement of soil quality and human health protection. The current study focuses on the mobility assessment of chemical species of As, Pb, Cr, Ni, Cu and Co in soils due to anthropogenic emission using sequential extraction (SE) and risk assessment code (RAC). Generally, the studied soils are alkaline calcareous loam soil. It has a low organic matter (OM) that ranges from 1 to 3.8% and is enriched with As, Pb, Cr, Ni, Cu and Co, which preferentially accumulate in soil clay and silt fraction. SE revealed that the non-residual (bioaccessible) fraction contains about (70.7%) As, (65.2%) Co, (58.8%) Cr, (28.4%) Cu, (6.8%) Ni and (64.5%) Pb, indicates the risk of pollution with As, Co, Cr, and Pb. RAC values indicated a high risk of soil pollution with As, medium risk of Co and Pb, low risk of Cu and Ni, and no risk of Cr. The results pointed out the geogenic source of Cr, mixed source of Co, Cu, and Ni and the anthropogenic source of As and Pb. The spatial distribution analyses of these metals indicated the role of urbanization, traffic, and industry on the releasing of toxic metals into the environment.

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“…The F-value and p value are from one-way analysis of variance (ANOVA) test an important source for the inputs of some elements like aluminum, calcium, iron, lead, magnesium, manganese, molybdenum, nickel, phosphorus, potassium, sodium and zinc in the paddy soils. However, differences in geochemical mobilizations in the groundwater sediments and surface soils that are largely regulated by complex interactions of geological and pedoenvironmental factors lead to variable inputs of the elements in the groundwater-soil systems [11,12,34,44,60]. The elevated concentrations of the elements, particularly the heavy metals, in the surface water-irrigated topsoil could also reflect the impacts of anthropogenic activities [4,17,54].…”

Section: Extent and Variability Of The Geochemical Elements In Paddy Soils Irrigated With Groundwater And Surface Watermentioning

confidence: 99%

“…The variability of arsenic in the paddy soils of Bangladesh is inherently high [7,27,28]. The dynamics of arsenic in soil vary due to variations in indigenous soil properties, particularly the ionic constituents of iron, manganese, aluminum, calcium, magnesium, phosphate, sulfate and carbonate, and pH, redox potential and texture of soil as well as the microbially mediated biogeochemical interactions that control the biogeochemical cycling of arsenic in soils [7,[29][30][31][32][33][34]. Temporal variability and spatial heterogeneity (both lateral and vertical) in the distribution of arsenic in the paddy soils have also been reported [35,36].…”

Section: Introductionmentioning

confidence: 99%

Geochemical variability in the soils of Bangladesh as affected by sources of irrigation water and inundation land types

et al. 2021

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Paddy soils in Bangladesh experience extensive irrigation with groundwater and surface water, both having variable geochemical constituents. The soils also have topological variations across the landscape. To understand the geochemical variability in the soils as affected by the different sources of irrigation water and the topographical variability, cultivation zones of paddy soils irrigated with both groundwater (n = 904) and surface water (n = 281) across Bangladesh were sampled and analyzed for a suit of seventeen geochemical elements. This study also assessed the extent and distribution of arsenic and the other geochemical elements in the paddy soils (n = 1209) as well as in a set of neighboring non-paddy soils (n = 235) within the different inundation land types (highland, medium highland-1, medium highland-2, medium lowland, lowland and very lowland) of Bangladesh. The mean concentrations of aluminum (26,000 mg/kg), cobalt (13 mg/kg), copper (32 mg/kg), iron (28,250 mg/kg), lead (18 mg/kg), magnesium (8050 mg/kg), molybdenum (1.02 mg/kg), nickel (41 mg/kg), potassium (4870 mg/kg), sodium (750 mg/kg) and zinc (70 mg/kg) in the surface water-irrigated paddy soils were found to be significantly (0.001 ≥ p ≤ 0.05) higher compared to the concentrations in the soils irrigated with groundwater (23,400; 12; 28; 25,650; 17; 7000; 0.96; 36; 4350; 600; and 62 mg/kg, respectively). Therefore, surface water used for paddy irrigation could increase the inputs of a number of toxic elements in the paddy soils having potential risk of crop contamination. Arsenic in the paddy and non-paddy soils varied significantly (F = 24.74, p < 0.001 and F = 3.42, p < 0.01, respectively) within the inundation land types, the very lowland (9.95 and 6.72 mg/kg, respectively) and lowland (8.33 and 5.20 mg/kg, respectively) having the highest mean arsenic concentrations and the medium highland-1 (5.27 and 5.17 mg/kg, respectively) having the lowest. The concentrations of the other geochemical elements analyzed were also observed to be higher, in general, in the soils of very lowland and lowland. Since the low-level lands are predominantly used for paddy cultivation, higher concentrations of various toxic elements, particularly arsenic, in such soils pose an increased risk of rice toxicity in Bangladesh. The results of this study present an inimitable geochemical database for the surface soils across Bangladesh which can be used in any future studies on the geomorphologically variable agricultural and non-agricultural Bangladeshi soils, providing a basis for environmental pollution assessment and sustainable mitigation approaches.

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Arsenic geochemistry and mineralogy as a function of particle-size in naturally arsenic-enriched soils

Cited by 49 publications

References 47 publications

Towards sustainable and efficient land development: Risk of soil heavy metal(loid)s in abandoned gold mines with short‐term rehabilitation and potential value for targeted remediation

Towards sustainable and efficient land development: Risk of soil heavy metal(loid)s in abandoned gold mines with short‐term rehabilitation and potential value for targeted remediation

Chemical Fractionation and Risk Assessment of Some Heavy Metals in Soils, Assiut Governorate, Egypt

Geochemical variability in the soils of Bangladesh as affected by sources of irrigation water and inundation land types

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