New insight for the diffusion–resupply kinetics of Cr(VI) in contaminated soil using DGT/DIFS
Bo Gao, Gao Li, Dongyu Xu
Abstract
was consistent with the low desorption constant, indicating a kinetic limitation. The magnitude of the resupply from the solid phase was related to labile pool size of Cr(VI) and soil organic carbon content. This study established a new quantification method for assessing diffusion-resupply kinetics of Cr(VI) in the soil， indicating the underestimation of Cr(VI) risk based on the use of traditional equilibrium methods. Our data provided a scientific basis for ecological risk assessment, pollution prevention, surface- and groundwater control, and environmental governance in areas with Cr contaminated soil.
Topics & Concepts
Soil waterChemistryDesorptionDiffusionEnvironmental chemistryContaminationPollutionDiffusive gradients in thin filmsSoil contaminationKineticsExtraction (chemistry)Phase (matter)Environmental remediationAdsorptionEnvironmental scienceSoil scienceChromatographyEcologyBiologyPhysicsThermodynamicsQuantum mechanicsOrganic chemistryChromium effects and bioremediationEnvironmental remediation with nanomaterialsAdsorption and biosorption for pollutant removal