Ecological risk and source identification of heavy metals in paddy soils and rice grains

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     The ecological risk and source identification of heavy metals in paddy soils and rice grains are crucial for ensuring food safety and sustainable agriculture. Paddy soils are particularly vulnerable to heavy metal accumulation due to prolonged irrigation, atmospheric deposition, and anthropogenic activities such as industrial discharge and excessive use of agrochemicals. These contaminants can be absorbed by rice plants and translocated to grains, posing significant health risks to consumers. Assessing the concentration levels, mobility, and bioavailability of metals like cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg) is essential for risk evaluation. Multivariate statistical techniques, including principal component analysis (PCA) and positive matrix factorization (PMF), are often employed to trace the sources of contamination—distinguishing between natural geological inputs and anthropogenic contributions. The ecological risk assessment, using indices like the potential ecological risk index (PERI), helps prioritize remediation efforts in affected areas. Understanding the dynamics of heavy metal uptake and their spatial distribution in rice agroecosystems provides a scientific basis for developing mitigation strategies and regulatory frameworks to protect both environmental and human health.

#EcologicalRisk #HeavyMetals #PaddySoils #RiceGrains #SoilContamination #FoodSafety #Cadmium #Lead #Arsenic #Mercury #SoilPollution #EnvironmentalRiskAssessment #SourceIdentification #PositiveMatrixFactorization #PrincipalComponentAnalysis #AgriculturalSoils #SoilToxicity #MetalUptake #SoilHealth #SustainableAgriculture #SoilMonitoring #SoilRemediation #AgrochemicalImpact #SoilQuality #Bioavailability #PERI #RiceSafety #SoilManagement #PollutionControl #EnvironmentalScience #ToxicMetals




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