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The Fe3O4-modified biochar reduces arsenic availability in soil and arsenic accumulation in indica rice (Oryza sativa L.).
Environ Sci Pollut Res Int. 2021 Apr; 28(14):18050-18061.ES

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 < 0.01) with the As concentrations in different rice tissues (brown rice, husks, spikelets, leaves, stems, and roots). The NBC-Fe immobilized As to decrease As availability in soil and increased the amount and thickness of iron plaque to sequester As on the surfaces of rice root. This study demonstrates that NBC-Fe is a promising soil amendment for the remediation of As-contaminated soil, therefore reducing As accumulation in rice plant and safety risks for rice consumption.

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Authors+Show Affiliations

Yao Y
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
Zhou H
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. zhouhang4607@163.com. Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China. zhouhang4607@163.com.
Yan XL
Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
Yang X
Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
Huang KW
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
Liu J
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
Li LJ
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
Zhang JY
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
Gu JF
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. gujiaofeng@163.com. Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China. gujiaofeng@163.com.
Zhou Y
International Joint Laboratory of Hunan Agricultural Typical Pollution Restoration and Water Resources Safety Utilization, College of Resources and Environment, Hunan Agricultural University, Changsha, China.
Liao BH
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China.

MeSH

ArsenicCadmiumCharcoalChinaHumansOryzaPlant RootsSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33410055

Citation

Yao, Yao, et al. "The Fe3O4-modified Biochar Reduces Arsenic Availability in Soil and Arsenic Accumulation in Indica Rice (Oryza Sativa L.)." Environmental Science and Pollution Research International, vol. 28, no. 14, 2021, pp. 18050-18061.
Yao Y, Zhou H, Yan XL, et al. The Fe3O4-modified biochar reduces arsenic availability in soil and arsenic accumulation in indica rice (Oryza sativa L.). Environ Sci Pollut Res Int. 2021;28(14):18050-18061.
Yao, Y., Zhou, H., Yan, X. L., Yang, X., Huang, K. W., Liu, J., Li, L. J., Zhang, J. Y., Gu, J. F., Zhou, Y., & Liao, B. H. (2021). The Fe3O4-modified biochar reduces arsenic availability in soil and arsenic accumulation in indica rice (Oryza sativa L.). Environmental Science and Pollution Research International, 28(14), 18050-18061. https://doi.org/10.1007/s11356-020-11812-x
Yao Y, et al. The Fe3O4-modified Biochar Reduces Arsenic Availability in Soil and Arsenic Accumulation in Indica Rice (Oryza Sativa L.). Environ Sci Pollut Res Int. 2021;28(14):18050-18061. PubMed PMID: 33410055.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Fe3O4-modified biochar reduces arsenic availability in soil and arsenic accumulation in indica rice (Oryza sativa L.). AU - Yao,Yao, AU - Zhou,Hang, AU - Yan,Xiu-Lan, AU - Yang,Xiao, AU - Huang,Kang-Wen, AU - Liu,Juan, AU - Li,Li-Juan, AU - Zhang,Jing-Yi, AU - Gu,Jiao-Feng, AU - Zhou,Yaoyu, AU - Liao,Bo-Han, Y1 - 2021/01/06/ PY - 2020/08/07/received PY - 2020/11/23/accepted PY - 2021/1/8/pubmed PY - 2021/4/1/medline PY - 2021/1/7/entrez KW - Arsenic KW - Fe3O4-modified biochar KW - Iron plaque KW - Rice KW - Sustainable soil remediation SP - 18050 EP - 18061 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 28 IS - 14 N2 - 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 < 0.01) with the As concentrations in different rice tissues (brown rice, husks, spikelets, leaves, stems, and roots). The NBC-Fe immobilized As to decrease As availability in soil and increased the amount and thickness of iron plaque to sequester As on the surfaces of rice root. This study demonstrates that NBC-Fe is a promising soil amendment for the remediation of As-contaminated soil, therefore reducing As accumulation in rice plant and safety risks for rice consumption. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/33410055/The_Fe3O4_modified_biochar_reduces_arsenic_availability_in_soil_and_arsenic_accumulation_in_indica_rice__Oryza_sativa_L___ DB - PRIME DP - Unbound Medicine ER -