Migration and Accumulation Mechanisms of Heavy Metals in Soil from Maoniuping Rare Earth Elements Mining, Southwest China DOI Creative Commons
Sijie He, Yang Li, Liang Tang

et al.

Land, Journal Year: 2025, Volume and Issue: 14(3), P. 611 - 611

Published: March 13, 2025

The Maoniuping Rare Earth Elements (REE) deposit, the second largest light REE deposit in world, has been mined for decades, with serious impacts on surrounding environment. However, impact of mining heavy metals downstream area (Nanhe River Basin) not systematically documented. To address this issue, study explored extent, transport, and accumulation metal contamination Nanhe Basin through field surveys (2946 topsoil samples four vertical soil sections) regional geographic attributes (e.g., area, river, elevation) combined a variety methods such as statistics, geostatistics, spatial analysis, geo-accumulation index, potential ecological risk index. results showed that soils presented different degrees pollution, Pb Cd being most abundant, whole moderate-heavy risks. distribution correlation exhibited similar patterns sources. Further analyses revealed was main source pollution Basin, entering runoffs. At same time, activities led to migration directions watershed, i.e., about 1.3 km horizontally, 16 longitudinally, more than 1 m vertically. In addition, 38.1 km2 watershed is contaminated by mine wastes, which 6.6 times size area. order mitigate threat metals, local government implemented water diversion projects crop conversion Basin. This provides reference research environmental problems caused exploitation mines other mineral resources.

Language: Английский

Spatial and Ecological Health Impacts of Potentially Toxic Elements in Road Dust from Long-Term Mining Activities: A Case Study of the Bayan Obo Deposit DOI
Xiaoxiao Han, Jing Wang,

Zhunan Xiong

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 489, P. 137595 - 137595

Published: Feb. 12, 2025

Language: Английский

Citations

0
Migration and Accumulation Mechanisms of Heavy Metals in Soil from Maoniuping Rare Earth Elements Mining, Southwest China DOI Creative Commons
Sijie He, Yang Li, Liang Tang

et al.

Land, Journal Year: 2025, Volume and Issue: 14(3), P. 611 - 611

Published: March 13, 2025

The Maoniuping Rare Earth Elements (REE) deposit, the second largest light REE deposit in world, has been mined for decades, with serious impacts on surrounding environment. However, impact of mining heavy metals downstream area (Nanhe River Basin) not systematically documented. To address this issue, study explored extent, transport, and accumulation metal contamination Nanhe Basin through field surveys (2946 topsoil samples four vertical soil sections) regional geographic attributes (e.g., area, river, elevation) combined a variety methods such as statistics, geostatistics, spatial analysis, geo-accumulation index, potential ecological risk index. results showed that soils presented different degrees pollution, Pb Cd being most abundant, whole moderate-heavy risks. distribution correlation exhibited similar patterns sources. Further analyses revealed was main source pollution Basin, entering runoffs. At same time, activities led to migration directions watershed, i.e., about 1.3 km horizontally, 16 longitudinally, more than 1 m vertically. In addition, 38.1 km2 watershed is contaminated by mine wastes, which 6.6 times size area. order mitigate threat metals, local government implemented water diversion projects crop conversion Basin. This provides reference research environmental problems caused exploitation mines other mineral resources.

Language: Английский

Citations

0