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The Fe3O4-modified biochar reduces arsenic availability in soil and arsenic accumulation in indica rice (Oryza sativa L.)
- Source :
- Environmental Science and Pollution Research. 28:18050-18061
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Arsenic (As)-contaminated paddy soil could result in elevated levels of As in rice plants and sequentially harm human health. The Fe3O4-modified biochar (NBC-Fe) prepared by the coprecipitation method was applied in a pot experiment to investigate its effect on mobility and bioavailability of As in soil and to reduce As accumulation in rice tissues (brown rice, husks, spikelets, leaves, stems, and roots). Compared with non-application (CK), application of NBC-Fe significantly increased the cation exchange capacity (CEC), decreased As availability, and raised the As concentration of crystalline hydrous oxide–bound fraction in the soil. The addition of 0.05–1.6% (w/w) NBC-Fe significantly reduced the As concentrations in brown rice by 9.4–47.3%, which was lower than the level set by the National Food Safety Standards of China (0.2 mg/kg). The NBC-Fe treatment decreased As concentrations in iron plaque (DCB-As), and the DCB-As had the very significant correlations (P
- Subjects :
- Oryza sativa
Chemistry
Environmental remediation
Health, Toxicology and Mutagenesis
Amendment
food and beverages
chemistry.chemical_element
General Medicine
010501 environmental sciences
01 natural sciences
Pollution
Husk
Horticulture
Biochar
Cation-exchange capacity
Environmental Chemistry
Brown rice
Arsenic
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 16147499 and 09441344
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Environmental Science and Pollution Research
- Accession number :
- edsair.doi...........77bc73144c515bd4609efe97c488952b