Abstract
The increasing production of rare earth elements (REEs) in southern China may greatly impact the local ecosystem and agriculture. Therefore, the movement of rare earth elements (REEs) from paddy soils in the REEs mines and surrounding areas to different rice tissues were studied. Results showed that REEs concentrations in mining paddy soils was in a range between 193.82 mg·kg-1 and 965.28 mg·kg-1, with a mean value of 332.55 mg·kg-1. It was about 3 times higher than the background REEs in China. REEs have similar physicochemical properties during their migration and accumulation process in the soil-rice system. The REEs levels in different rice tissues were in the order of root > leaf > grain. The iron plaque on the rice roots surface does not show significant barrier effects on the accumulation of REEs. The mobility and bioavailability characteristics of REEs in rice-soil system are closely related to the genotypes of rice and physicochemical properties of soil.
| Original language | English |
|---|---|
| Pages (from-to) | 1006-1014 |
| Number of pages | 9 |
| Journal | Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae |
| Volume | 36 |
| Issue number | 3 |
| Publication status | Published - 6 Mar 2016 |
Keywords
- Accumulation
- Migration
- Rare earth elements (REEs)
- Rice
- Soil