The effect of Fenton reaction using H2O2 and water control on the distribution and accumulation of As speciation within the soil-rice system

Research output: Contribution to journalArticlepeer-review

Authors

  • Shaorui Wang
  • Qiaowen Li
  • Lili Li
  • Junhao Qin
  • Huashao Li

Colleges, School and Institutes

Abstract

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 H 2O 2 and 100 μM Fe 2+). 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 5+, and As 3+ 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.

Bibliographic note

Funding Information: This study was supported by the National Key Research and Development Program of China ( 2020YFC1807805 , 2017YFD0800903 ), the National Natural Science Foundation of China ( 31770479 , 41271469 ), and the Natural Science Foundation of Guangdong Province, China (No. 2017A030313043 ).

Details

Original languageEnglish
Article number129633
JournalChemosphere
Volume274
Early online date25 Jan 2021
Publication statusE-pub ahead of print - 25 Jan 2021

Keywords

  • Arsenate, Arsenite, Dimethylarsinic acid, Hydrogen peroxide, Rice