Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, 510650, China.
College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture/Key Laboratory of Agroecology and Rural Environment of Guangzhou Regular Higher Education Institutions, Guangzhou, 510642, China.
Chemosphere. 2021 Jul;274:129633. doi: 10.1016/j.chemosphere.2021.129633. Epub 2021 Jan 25.
The behavior of arsenic (As) in paddy soil is of great interest because rice is an efficient As accumulator, which can result in potential health risks to humans. In this study, we investigated the distribution and translocation of As speciation within the soil-rice system in the presence of Fenton solution (100 μM HO and 100 μM Fe). The results showed that the iron plaque concentrations were enhanced either by the addition of Fenton solution or under flooded condition. In addition, total As, As, and As concentrations were lower in rice tissues treated with Fenton solution than those without Fenton solution treatments. Therefore the addition of Fenton solution can reduce As speciation accumulation in rice tissue. This study revealed the function of Fenton solution on the fate of As speciation distribution within soil-rice system and the link between iron plaque and As accumulation in rice tissue under flooded and non-flooded conditions.
砷（As）在稻田土壤中的行为引起了广泛关注，因为水稻是一种高效的砷积累植物，这可能对人类健康造成潜在风险。在本研究中，我们调查了在芬顿溶液（100μM HO 和 100μM Fe）存在下，土壤-水稻系统中砷形态的分布和迁移。结果表明，铁斑浓度无论是通过添加芬顿溶液还是在淹水条件下都得到了增强。此外，与未添加芬顿溶液处理的水稻组织相比，用芬顿溶液处理的水稻组织中总砷、砷和砷浓度较低。因此，添加芬顿溶液可以减少水稻组织中砷形态的积累。本研究揭示了芬顿溶液在土壤-水稻系统中砷形态分布命运以及淹水和非淹水条件下铁斑与水稻组织中砷积累之间联系的作用。
