Effect of lead zinc mineralization area on heavy metals accumulation and geochemical fractions of agricultural soils in Southwest China DOI Creative Commons
Zhenglu Yu, Xuexian Li, Pan Wu

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Июнь 1, 2025

Soils developed in karst regions are widely reported to exhibit high geological backgrounds of heavy metals (HMs) globally. However, due unique conditions, there both mineralized and/or altered areas polymetallic minerals areas, and whether the HMs concentrations regional soil affected by these is far from enough attention at present. This study investigated accumulation chemical speciation soils typical lead-zinc zones Southwest China, using random forest (RF) modeling identify key driving factors. The results indicated significant variability concentrations. Cr, Ni, Cu levels were comparable Guizhou Province's background values, while Cd, Pb, Zn, As, Hg exceeded values 0.54 44.98 times. Notably, Zn was particularly pronounced, with certain samples surpassing risk control thresholds for agricultural land. Sequential extraction analysis revealed that Cd Pb predominantly found reducible fractions, (40.61% 36.49%, respectively), indicating strong bioavailability potential mobility. RF identified TFe₂O₃ Al₂O₃ as factors Hg, Ni Cu, MnO distance mineralization points (DL) significantly influenced levels. highlights driven carbonate rock parent materials exacerbated mineralization, offering a valuable insight management control. Meanwhile, research can provide references geochemical mechanisms (belts) worldwide.

Язык: Английский

Effect of lead zinc mineralization area on heavy metals accumulation and geochemical fractions of agricultural soils in Southwest China DOI Creative Commons
Zhenglu Yu, Xuexian Li, Pan Wu

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Июнь 1, 2025

Soils developed in karst regions are widely reported to exhibit high geological backgrounds of heavy metals (HMs) globally. However, due unique conditions, there both mineralized and/or altered areas polymetallic minerals areas, and whether the HMs concentrations regional soil affected by these is far from enough attention at present. This study investigated accumulation chemical speciation soils typical lead-zinc zones Southwest China, using random forest (RF) modeling identify key driving factors. The results indicated significant variability concentrations. Cr, Ni, Cu levels were comparable Guizhou Province's background values, while Cd, Pb, Zn, As, Hg exceeded values 0.54 44.98 times. Notably, Zn was particularly pronounced, with certain samples surpassing risk control thresholds for agricultural land. Sequential extraction analysis revealed that Cd Pb predominantly found reducible fractions, (40.61% 36.49%, respectively), indicating strong bioavailability potential mobility. RF identified TFe₂O₃ Al₂O₃ as factors Hg, Ni Cu, MnO distance mineralization points (DL) significantly influenced levels. highlights driven carbonate rock parent materials exacerbated mineralization, offering a valuable insight management control. Meanwhile, research can provide references geochemical mechanisms (belts) worldwide.

Язык: Английский

Процитировано

0