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噻虫胺在土壤中的吸附和淋溶特性

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吴文铸, 郭敏, 孔德洋, 石利利, 许静, 单正军. 噻虫胺在土壤中的吸附和淋溶特性[J]. 环境化学, 2012, 31(11): 1730-1735.
引用本文: 吴文铸, 郭敏, 孔德洋, 石利利, 许静, 单正军. 噻虫胺在土壤中的吸附和淋溶特性[J]. 环境化学, 2012, 31(11): 1730-1735.
shu
WU Wenzhu, GUO Min, KONG Deyang, SHI Lili, XU Jing, SHAN Zhengjun. Adsorption and leaching of clothianidin in soil[J]. Environmental Chemistry, 2012, 31(11): 1730-1735.
Citation: WU Wenzhu, GUO Min, KONG Deyang, SHI Lili, XU Jing, SHAN Zhengjun. Adsorption and leaching of clothianidin in soil[J]. Environmental Chemistry, 2012, 31(11): 1730-1735.
shu

噻虫胺在土壤中的吸附和淋溶特性

  • 1.

    环境保护部南京环境科学研究所, 南京, 210042

  • 基金项目:

    江苏省"333高层次人才培养工程"

    "农药健康风险评价体系的研究"科研基金项目资助.

Adsorption and leaching of clothianidin in soil

  • 1.

    Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of the People's Republic of China, Nanjing, 210042, China

  • Fund Project:

  • 摘要: 采用室内模拟试验方法,研究了噻虫胺在3种不同类型土壤中的吸附特性、移动特性及其影响因素.结果表明,噻虫胺在江西红壤、太湖水稻土与东北黑土中的吸附较好地符合Freundlich方程,Kd值分别为0.49、1.99和4.42,Kd值大小次序依次为:江西红壤<太湖水稻土<东北黑土.影响噻虫胺土壤吸附性的主要因素为土壤有机质.薄层层析试验显示,当溶剂展开至12.0 cm处,噻虫胺在江西红壤、太湖水稻土和东北黑土中最远移至10-12 cm、8-10 cm、4-6 cm处.土柱试验表明噻虫胺在红壤淋出液中质量分数为56.04%,太湖水稻土和东北黑土中的噻虫胺最远已移至20.0-25.0 cm和15.0-20.0 cm处.影响噻虫胺在土壤中吸附性和移动性的主要因素为土壤有机质含量.噻虫胺存在对地下水污染的潜在风险性,特别是在红壤环境下使用噻虫胺应该引起足够重视.
    Abstract: The adsorption and mobility of clothianidin in three different types soils and the governing factors were studied in laboratory in accordance with the criterion for chemical pesticide environmental safety assessment. The results showed that the adsorption of clothianidin in the soils could be well fitted by the empirical Freundich isotherm. The adsorption constants (Kd) were 0.49, 1.99 and 4.42 in Jiangxi red soil, Taihu paddy soil, Northeast China black soil, respectively. The soil organic matter content was presumed to be the dominant factor affecting the adsorption of clothianidin in soils. TLC results showed that when the solvent expanded to 12.0 cm, the moving distance of clothianidin were 10-12 cm,8-10 cm and 4-6 cm in Jiangxi red soil, Taihu paddy soil and the Northeast black soil, respectively. Column test showed that, when 56.04% clothianidin leached out in Jiangxi red soil, the pesticide moved a distance of 20.0-25.0 cm and 15.0-20.0 cm in Taihu paddy soil and the Northeast black soil. The result of the mobility test showed that clothianidin is ready to move in the test soils. The soil organic matter content was the dominant factor affecting the adsorption of terbufos in soils. This work demonstrates that clothianidin has potential risk of contaminating groundwater. Attention should be paid to its application, particularly in red soil.
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  • 收稿日期:  2012-03-26
吴文铸, 郭敏, 孔德洋, 石利利, 许静, 单正军. 噻虫胺在土壤中的吸附和淋溶特性[J]. 环境化学, 2012, 31(11): 1730-1735.
引用本文: 吴文铸, 郭敏, 孔德洋, 石利利, 许静, 单正军. 噻虫胺在土壤中的吸附和淋溶特性[J]. 环境化学, 2012, 31(11): 1730-1735.
shu
WU Wenzhu, GUO Min, KONG Deyang, SHI Lili, XU Jing, SHAN Zhengjun. Adsorption and leaching of clothianidin in soil[J]. Environmental Chemistry, 2012, 31(11): 1730-1735.
Citation: WU Wenzhu, GUO Min, KONG Deyang, SHI Lili, XU Jing, SHAN Zhengjun. Adsorption and leaching of clothianidin in soil[J]. Environmental Chemistry, 2012, 31(11): 1730-1735.
shu

噻虫胺在土壤中的吸附和淋溶特性

  • 1. 环境保护部南京环境科学研究所, 南京, 210042
  • 收稿日期:  2012-03-26
基金项目:

江苏省"333高层次人才培养工程"

"农药健康风险评价体系的研究"科研基金项目资助.

摘要: 采用室内模拟试验方法,研究了噻虫胺在3种不同类型土壤中的吸附特性、移动特性及其影响因素.结果表明,噻虫胺在江西红壤、太湖水稻土与东北黑土中的吸附较好地符合Freundlich方程,Kd值分别为0.49、1.99和4.42,Kd值大小次序依次为:江西红壤<太湖水稻土<东北黑土.影响噻虫胺土壤吸附性的主要因素为土壤有机质.薄层层析试验显示,当溶剂展开至12.0 cm处,噻虫胺在江西红壤、太湖水稻土和东北黑土中最远移至10-12 cm、8-10 cm、4-6 cm处.土柱试验表明噻虫胺在红壤淋出液中质量分数为56.04%,太湖水稻土和东北黑土中的噻虫胺最远已移至20.0-25.0 cm和15.0-20.0 cm处.影响噻虫胺在土壤中吸附性和移动性的主要因素为土壤有机质含量.噻虫胺存在对地下水污染的潜在风险性,特别是在红壤环境下使用噻虫胺应该引起足够重视.

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