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石灰性污染土壤中重金属镉、铅的活化研究

邢维芹 陈小亚 毛凯 李冲 龚佳荣 王亚利 白红娟 李立平

邢维芹, 陈小亚, 毛 凯, 李 冲, 龚佳荣, 王亚利, 白红娟, 李立平. 石灰性污染土壤中重金属镉、铅的活化研究[J]. 土壤通报, 2021, 52(1): 185 − 191 doi: 10.19336/j.cnki.trtb.2020070501
引用本文: 邢维芹, 陈小亚, 毛 凯, 李 冲, 龚佳荣, 王亚利, 白红娟, 李立平. 石灰性污染土壤中重金属镉、铅的活化研究[J]. 土壤通报, 2021, 52(1): 185 − 191 doi: 10.19336/j.cnki.trtb.2020070501
XING Wei-qin, CHEN Xiao-ya, MAO Kai, LI Chong, GONG Jia-rong, WANG Ya-li, BAI Hong-juan, LI Li-ping. Activation of Heavy Metals Cd and Pb in Contaminated Calcareous Soils[J]. Chinese Journal of Soil Science, 2021, 52(1): 185 − 191 doi: 10.19336/j.cnki.trtb.2020070501
Citation: XING Wei-qin, CHEN Xiao-ya, MAO Kai, LI Chong, GONG Jia-rong, WANG Ya-li, BAI Hong-juan, LI Li-ping. Activation of Heavy Metals Cd and Pb in Contaminated Calcareous Soils[J]. Chinese Journal of Soil Science, 2021, 52(1): 185 − 191 doi: 10.19336/j.cnki.trtb.2020070501

石灰性污染土壤中重金属镉、铅的活化研究

doi: 10.19336/j.cnki.trtb.2020070501
基金项目: 国家重点研发计划(2018YFD0800304)、国家重点研发计划(2016YFE0106400)和国家自然科学基金(41471253)资助
详细信息
    作者简介:

    邢维芹(1972−),女,河南安阳人,博士,副教授,研究方向为环境土壤学

    通讯作者:

    E-mail: xingwq@haut.edu.cn

    lilp@haut.edu.cn

  • 中图分类号: X53

Activation of Heavy Metals Cd and Pb in Contaminated Calcareous Soils

  • 摘要: 为了探讨石灰性污染土壤中重金属的活化方法,选择四种试剂(氯化钠、盐酸、EDDS和柠檬酸)和受镉污染和镉、铅复合污染两种土壤(XX土壤,全镉6.77 mg kg−1,< 0.01 mm颗粒含量9.8%;JY土壤全镉5.72 mg kg−1、全铅312 mg kg−1,< 0.01 mm颗粒含量29.8%)进行室内培养试验。结果表明:对于XX土壤,氯化钠、盐酸、EDDS和柠檬酸对镉均有活化作用,活化效率分别达到71.87%、74.87%、43.27%和22.86%;对于JY土壤,氯化钠、盐酸和EDDS对镉的活化效率分别达到53.44%、48.44%和42.4%,柠檬酸的活化作用不明显,氯化钠、盐酸、EDDS和柠檬酸对JY土壤铅的活化效率分别达到26.49%、25.56%、55.21%和14.81%。土壤质地可能是影响两种土壤中不同试剂重金属活化效率的主要因素。
  • 图  1  不同处理土壤pH值

    SC-氯化钠,HA-盐酸,EDDS-乙二胺二琥珀酸, CA-柠檬酸,图中不同字母表示同一土壤不同处理之间的数据在0.05水平上差异显著。下同。

    Figure  1.  pH values of soils added with different additives

    图  2  不同处理土壤EC值

    Figure  2.  EC of soils added with different additives

    图  3  不同处理XX土壤DTPA提取态重金属含量

    Figure  3.  Concentrations of DTPA-extractable heavy metals in different treatments of the XX soil

    图  4  不同处理对XX土壤重金属的活化效率

    Figure  4.  Activation efficiency of heavy metals in different treatments of the XX soil

    图  5  不同处理JY土壤DTPA提取态重金属含量

    Figure  5.  Concentrations of DTPA extractable heavy metals in different treatments of the JY soil

    图  6  不同处理对JY土壤重金属的活化效率

    Figure  6.  Activation efficiency of heavy metals in different treatments of the JY soil

    表  1  试验处理

    Table  1.   Treatments of the experiment

    试剂名称
    Reagent
    代码
    Code
    用量
    Application amount
    CK
    乙二胺二琥珀酸EDDS1.4612 g kg−1(5.0 mmol kg−1
    盐酸HA1.2397 mL kg−1(15.0 mmol kg−1
    氯化钠SC0.8766 g kg−1(15.0 mmol kg−1
    柠檬酸CA1.5760 g kg−1(7.5 mmol kg−1
    下载: 导出CSV

    表  2  两种土壤的基本性质

    Table  2.   Basic properties of the soils

    性质
    Soil property
    XX土壤
    XX Soil
    JY土壤
    JY Soil
    性质
    Soil property
    XX土壤
    XX Soil
    JY土壤
    JY Soil
    pH 8.15 8.13 全Pb(mg kg−1) 37.3 311.8
    EC(μS cm−1 245 792 DTPA-Pb(mg kg−1) 1.82 87.22
    碱解氮(mg kg−1 81.9 43.5 Pb有效性系数 4.88% 27.97%
    有效磷(mg kg−1 27.2 12.2 全Cd(mg kg−1 6.77 5.72
    速效钾(mg kg−1 83.3 96.7 DTPA-Cd(mg kg−1 2.12 0.85
    有机质(g kg−1
    碳酸钙含量(g kg−1
    16.2
    63.3
    10.4
    52.5
    Cd有效性系数
    全Cu(mg kg−1
    31.31%
    16.80
    14.86%
    60.26
    < 0.05 mm颗粒含量 13.3% 40.8% DTPA-Cu(mg kg−1 1.08 3.24
    < 0.01 mm颗粒含量 9.8% 29.8% Cu有效性系数 6.43% 5.38%
    Mg(NO3)2-Cd(mg kg−1 0.08 0.03 全Zn 79.58 129.59
    Mg(NO3)2-Pb(mg kg−1 未检出 未检出 DTPA-Zn 5.56 2.48
    Mg(NO3)2-Cu(mg kg−1 0.103 未检出 Zn有效性系数 6.99% 1.91%
    Mg(NO3)2-Zn(mg kg−1 未检出 未检出
    下载: 导出CSV

    表  3  不同处理硝酸镁态重金属含量

    Table  3.   Concentrations of magnesium nitrate-extractable heavy metal in different treatments

    土壤
    Soil
    代码
    Code
    含量 Concentration(mg kg−1
    CdPbCuZn
    XXCK0.082 c未检出0.122 b未检出
    SC0.121 b未检出0.115 b2.11
    HA0.153 a未检出0.126 b未检出
    CA0.044 d未检出0.112 b未检出
    EDDS0.108 b未检出1.231 a未检出
    JYCK0.054 c未检出未检出未检出
    SC0.081 b未检出未检出未检出
    HA0.067b c未检出未检出未检出
    CA0.055 c未检出未检出未检出
    EDDS0.361 a1.260.8555.59
    注:表中同一土壤的同一列中的不同字母表示不同处理之间的数据在0.05水平上差异显著。
    下载: 导出CSV
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  • 收稿日期:  2020-07-05
  • 修回日期:  2021-01-12
  • 刊出日期:  2021-03-05

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