Remediation of Cd, Pb and as Co-contaminated Paddy Soil by Applying Different Amendments.,Bulletin of Environmental Contamination and Toxicology

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Remediation of Cd, Pb and as Co-contaminated Paddy Soil by Applying Different Amendments.
Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2020-07-30 , DOI: 10.1007/s00128-020-02940-8
Xinyu Nong ₁ , Chaolan Zhang ₁ , Hexiao Chen ₂ , Qun Rong ₁ , Hefeng Gao ₂ , Xiaodan Jin ₂

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The current study investigated the efficiency of sepiolite (SE), sodium humate (HS), microbial fertilizer (JF) and SE combined with JF/HS in a ratio of 2:1 (w/w) (JF-2SE and HS-2SE) on Cd, Pb and As bioavailability in field trials with rice (Oryza sativa L.). The results showed that all the amendments remarkably decreased (p < 0.05) the contents of available Cd and available Pb in soil. Only JF-2SE treatment reduced available As concentration in soil. All the amendments were found to effectively reduce (p < 0.05) the contents of As in brown rice. Both JF-2SE and HS-2SE co-applications reduced the concentrations of Cd in brown rice to 0.108 and 0.135 mg kg⁻¹, and that of Pb reduced to 0.2 and 0.175 mg kg⁻¹, which met the national standard limit of China. Thus, the co-application of JF/HS-2SE can be a promising remediation strategy in Cd, Pb and As co-contaminated paddy soil.

更新日期：2020-07-30

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