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Assessment of single extraction methods for evaluating the immobilization effect of amendments on cadmium in contaminated acidic paddy soil

Author

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  • Q.H. Zhu

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China)

  • D.Y. Huang

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China)

  • S.L. Liu

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China)

  • Z.C. Luo

    (Hunan Soil and Fertilizer Institute, Changsha, Hunan, P.R. China)

  • H.H. Zhu

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China)

  • B. Zhou

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China
    Graduate University of Chinese Academy of Sciences, Beijing, P.R. China)

  • M. Lei

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China
    Graduate University of Chinese Academy of Sciences, Beijing, P.R. China)

  • Z.X. Rao

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China
    Graduate University of Chinese Academy of Sciences, Beijing, P.R. China)

  • X.L. Cao

    (Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P.R. China)

Abstract

Various single extractants (EDTA, DTPA, CaCl2, NaNO3 and NH4NO3) and the first step of Community Bureau of Reference (BCR1) method were used to evaluate the immobilization of Cd in contaminated acidic paddy soil by different amendments. The extractability of Cd in amended soil changed in the following order: EDTA ≍ BCR1 > DTPA > NH4NO3 ≍ CaCl2 > NaNO3. A simple correlation analysis indicated that the BCR1, CaCl2, NH4NO3, and NaNO3 methods are the best suited methods for predicting changes in the phytoavailability to rice of Cd in soil (r = 0.680 to 0.828, P < 0.001), followed by the DTPA extraction procedure (r = 0.543 to 0.666, P < 0.01). However, non-significant correlations were observed between soil EDTA-extractable Cd and Cd accumulated in rice. Accordingly, the BCR1, CaCl2, NH4NO3, and NaNO3 extraction procedures are recommended for evaluating the immobilization of Cd in contaminated acidic paddy soil.

Suggested Citation

  • Q.H. Zhu & D.Y. Huang & S.L. Liu & Z.C. Luo & H.H. Zhu & B. Zhou & M. Lei & Z.X. Rao & X.L. Cao, 2012. "Assessment of single extraction methods for evaluating the immobilization effect of amendments on cadmium in contaminated acidic paddy soil," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(2), pages 98-103.
    • Handle: RePEc:caa:jnlpse:v:58:y:2012:i:2:id:358-2011-pse
    DOI: 10.17221/358/2011-PSE
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    Cited by:

    1. Changrui Zhou & Qiang Ma & Wantai Yu & Zhuqing Xia & Chuanchuan Ning & Haiyan Yuan & Shuailin Li, 2020. "Accumulation of heavy metals in soil and maize after 17-year pig manure application in Northeast China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(2), pages 65-72.

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