Ecotoxicological Effects of Heavy Metals on Rice (<i>Oryza sativa</i> L.) Across Its Life Cycle and Health Risk Assessment in Soils Around Pb-Zn Mine.

ABSTRACT: Agricultural soils surrounding mining areas are often polluted with heavy metals (HMs) due to long-term mining activities and high geological background values. In this study, we investigated the distribution and transport of Cu, Cr, Zn, Cd, Pb, and As in a soil-rice system near a century-old mining site, evaluated their toxic effects on rice (Oryza sativa L.) throughout the growth period, and assessed the associated health risks using the Nemerow index and potential ecological risk index. The results showed that HM contents in rice grown in contaminated soils were significantly higher than in the control. HMs mainly accumulated in roots, with the lowest contents in grains. Cd exhibited the highest enrichment capacity, with bioconcentration factors of 0.79, 1.04, and 1.95 at the til

SUBMITTER: Hu F 

PROVIDER: S-EPMC12787725 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature