Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 289, P. 117699 - 117699

Published: Jan. 1, 2025

A comprehensive understanding of cadmium (Cd) migration in soils near contaminated hotspots is crucial for optimizing remediation efforts and ensuring crop health. This study investigates agricultural from four sites mining sewage-irrigation areas, assessing the impact inorganic organic fertilizer application on soil Cd remobilization. Results revealed that fertilization, particularly with mineral phosphorus, disrupts stability, substantially increases short-term mobility vulnerable regions. Random Forest analysis identified elevated dissolved matter pH changes as key drivers Monte Carlo simulation, integrating Michaelis-Menten reaction kinetics model, further accessed potential risk The model predicted probabilities grain exceeding thresholds ranged 021.6 % rice, 13.8 %100 wheat, 084.2 maize absence use. Fertilization significantly increased these exceedance by 6.1 %87.4 %, highest risks observed irrigation-contaminated soils, under phosphorus fertilization. Nevertheless, it recommended while fertilization can elevate remobilization hotspots, strategies might not always be necessary. highlights hybrid data-driven approaches, combining machine learning, mechanistic stochastic prediction to simplify complex environmental process, allowing integrated evaluations.

Language: Английский

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Prediction of Zinc, Cadmium, and Arsenic in European Soils Using Multi-End Machine Learning Models

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 490, P. 137800 - 137800

Published: March 3, 2025

Language: Английский

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Heavy Metal Accumulation in Maize and Wheat in Acidic Soil: A Comparative Study

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2084 - 2084

Published: Feb. 28, 2025

Maize and wheat grains are at significant risk of accumulating excessive heavy metals in acidic soils, but relatively few comparative studies have been conducted on the two. This study employed Spearman correlation analysis, random forest modeling, structural equation modeling to systematically investigate interdependences between soil properties metal accumulation (Cd, Cr, As, Pb, Hg) cereal grains. The results revealed distinct patterns content sequences maize grains: exhibited Cr > Pb As Cd Hg, while followed Hg. Bioconcentration factor (BCF) differed significantly, showing Hg versus wheat. Soil cation exchange capacity demonstrated strongest influence both crops. Arsenic mechanisms displayed species-specific dependencies, with primarily regulated by organic matter clay content. Notably, a positive (p ≤ 0.05) concentrations was observed crops, suggesting potential homologous pollution sources. These findings elucidate crop-specific governed physicochemical properties. demonstrates that under similar growing conditions, (BCF = 0.068) exhibits weaker ability accumulate compared 0.467). Moreover, showed responses properties, particularly their Cd. By addressing contamination this work supports development safer agricultural practices improved crop quality control.

Language: Английский

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Cadmium isotopic evidence for the redistribution and fate of cadmium during carbonate weathering

Global and Planetary Change, Journal Year: 2025, Volume and Issue: unknown, P. 104820 - 104820

Published: April 1, 2025

Language: Английский

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Insight into the interaction mechanisms of toxic cadmium and lead with calcite/phosphate composite solids

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138320 - 138320

Published: April 17, 2025

Language: Английский

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Cd mobilization in mining-impacted soils with different bedrock lithology: Insights from stable Cd isotopes

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 135798 - 135798

Published: Sept. 11, 2024

Language: Английский

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Key Factors Controlling Cadmium and Lead Contents in Rice Grains of Plants Grown in Soil with Different Cadmium Levels from an Area with Typical Karst Geology

Agronomy, Journal Year: 2024, Volume and Issue: 14(9), P. 2076 - 2076

Published: Sept. 11, 2024

Cadmium (Cd) is a naturally occurring element often associated with lead (Pb) in the Earth’s crust, particularly karst regions, posing significant safety hazards for locally grown rice. Identifying key factors controlling Cd and Pb content local rice essential under natural soil condition, as this will provide crucial theoretical foundation implementing security intervention measures within rice-growing industry. This study collected three types of paddy field soils varying concentrations from areas pot experiments. The varieties tested included low-Cd-accumulating variety, high-Cd-accumulating cultivated variety. Soil physicochemical properties plant physiological indices were monitored throughout growth stages. These data used to construct segmented regression model levels grains based on plant’s metabolic pathways structure polynomial equations. Stepwise identified accumulation grains. In conclusion, should be classified into two categories: (i) influencing roots (ii) regulating transport aboveground translocation abilities Cd, Pb, zinc (Zn), iron (Fe), manganese (Mn), calcium (Ca), magnesium (Mg) among showed no interspecific differences identical conditions. Mg uptake by may represent mechanism inhibiting roots. high background increased organic matter (SOM) enhance bioavailability. Additionally, YXY possess potential low accumulation.

Language: Английский

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Potential influence mechanism of mineral–organic matter (OM) interactions on the occurrence characteristics of toxic elements in Pb/Zn smelter contaminated soils

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 484, P. 136671 - 136671

Published: Nov. 26, 2024

Language: Английский

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