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脱乙基阿特拉津和脱异丙基阿特拉津在两种旱地土壤中的消解动态及影响因素

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沈佳伦, 邓艳玲, 张安平, 刘寒冰, 王冬琦, 薛南冬. 脱乙基阿特拉津和脱异丙基阿特拉津在两种旱地土壤中的消解动态及影响因素[J]. 环境化学, 2020, (2): 448-454. doi: 10.7524/j.issn.0254-6108.2019031105
引用本文: 沈佳伦, 邓艳玲, 张安平, 刘寒冰, 王冬琦, 薛南冬. 脱乙基阿特拉津和脱异丙基阿特拉津在两种旱地土壤中的消解动态及影响因素[J]. 环境化学, 2020, (2): 448-454. doi: 10.7524/j.issn.0254-6108.2019031105
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SHEN Jialun, DENG Yanling, ZHANG Anping, LIU Hangbing, WANG Dongqi, XUE Nandong. Dissipation of deethylatrazine (DEA) and deisopropyl atrazine (DIA) in soils and their influencing factors[J]. Environmental Chemistry, 2020, (2): 448-454. doi: 10.7524/j.issn.0254-6108.2019031105
Citation: SHEN Jialun, DENG Yanling, ZHANG Anping, LIU Hangbing, WANG Dongqi, XUE Nandong. Dissipation of deethylatrazine (DEA) and deisopropyl atrazine (DIA) in soils and their influencing factors[J]. Environmental Chemistry, 2020, (2): 448-454. doi: 10.7524/j.issn.0254-6108.2019031105
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脱乙基阿特拉津和脱异丙基阿特拉津在两种旱地土壤中的消解动态及影响因素

  • 1. 浙江工业大学环境学院, 杭州, 310000;

  • 2. 生态环境部土壤与农业农村生态环境监管技术中心, 北京, 100012

    • 通讯作者: 张安平, E-mail: azhang@zjut.edu.cn ;  薛南冬, E-mail: xuend@craes.org.cn
  • 基金项目:

    国家重点研发计划重点专项（2016YFD0800202，2017YFD0800700）资助.

Dissipation of deethylatrazine (DEA) and deisopropyl atrazine (DIA) in soils and their influencing factors

  • 1. Zhejiang University of Technology, College of Environment, Hangzhou, 310000, China;

  • 2. Technical Center for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China

    • Corresponding authors: ZHANG Anping, azhang@zjut.edu.cn ;  XUE Nandong, xuend@craes.org.cn
  • Fund Project: Supported by the Key Projects of the National Key R & D Program (2016YFD0800202, 2017YFD0800700).

  • 摘要: 采用实验室模拟方法，研究了土壤温度，土壤湿度，施药浓度对阿特拉津降解产物脱乙基阿特拉津（DEA）和脱异丙基阿特拉津（DIA）在土壤中消解的影响.结果表明，土壤温度对DEA和DIA在土壤中的消解有显著影响，土壤温度由15℃上升至35℃，DEA在土壤中半衰期缩短了1.1 d （潮土）、8.1 d （黑土）、21 d消解率增加了27.8%（潮土）、21.1%（黑土）；DIA在土壤中半衰期缩短了1.8 d （潮土）、4.1 d （黑土）、21 d消解率增加了20.4%（潮土）、21.2%（黑土）.在不同湿度的潮土中的DEA和DIA消解呈现相同的变化趋势，在50%土壤湿度下消解最慢，随着土壤湿度增加，消解变快；在不同湿度的黑土中的DEA和DIA呈现相反的规律，DEA随湿度增加消解变慢，DIA与之相反.施药浓度从0.1 mg·kg-1增加到0.5 mg·kg-1，黑土和潮土中DEA和DIA的半衰期显著下降，施药浓度提高到至1 mg·kg-1时，两种土壤中的DEA和DIA消解速率下降，半衰期变长.DEA和DIA在黑土中的半衰期均比在潮土中长，但是在黑土中消解较完全.该研究结果将为土壤中阿特拉津以及DEA和DIA的环境安全评价提供依据.
    Abstract: Effects of soil temperature, soil moisture and application concentration on the dissipation of atrazine degradation products, deethylatrazine (DEA) and deisopropylatrazine (DIA), in soils were studied by laboratory simulation. The results showed that temperature had a significant effect on the dissipation of DEA and DIA in soils. When the soil temperature increased from 15℃ to 35℃, the half-life of DEA decreased by 1.1 d (Fluvo-aquci soil) and 8.1 d (Black soil) and the dissipation rate increased by 27.8% (Fluvo-aquci soil) and 21.1%(Black soil) in 21 days.The half-life of DIA decreased by 1.8 d (Fluvo-aquci soil) and 4.1 d (Black soil), and the dissipation rate increased by 20.4% (Fluvo-aquci soil) and 21.2% (Black) in 21 days. DEA and DIA in Fluvo-aquci soil showed the same pattern with different soil moistures. DEA and DIA in Black soil showed the opposite change of the dissipation with different soil moistures, and the dissipation of DEA slowed down with the increase of soil moisture, while the dissipation of DIA became slower with the increase of soil moisture. When the application concentration increased from 0.1 mg·kg-1 to 0.5 mg·kg-1, the half-life of DEA and DIA in Black soil and Fluvo-aquci soil decreased significantly. While the application concentration increased to 1 mg/kg, the dissipation rate of DEA and DIA in the two soils decreased and the half-life became longer. The half-lives of DEA and DIA in Black soil were longer than those in Fluvo-aquci soil, but they degraded more thoroughly in Black soil. The results could provide preliminary data for the environmental safety assessment of DEA and DIA and their dissipation in soils.
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  • 收稿日期:  2019-03-11

脱乙基阿特拉津和脱异丙基阿特拉津在两种旱地土壤中的消解动态及影响因素

    通讯作者: 张安平, E-mail: azhang@zjut.edu.cn ;  薛南冬, E-mail: xuend@craes.org.cn
  • 1. 浙江工业大学环境学院, 杭州, 310000;
  • 2. 生态环境部土壤与农业农村生态环境监管技术中心, 北京, 100012
  • 收稿日期:  2019-03-11
  • 网络出版日期:  2020-02-26
基金项目:

国家重点研发计划重点专项（2016YFD0800202，2017YFD0800700）资助.

摘要: 采用实验室模拟方法，研究了土壤温度，土壤湿度，施药浓度对阿特拉津降解产物脱乙基阿特拉津（DEA）和脱异丙基阿特拉津（DIA）在土壤中消解的影响.结果表明，土壤温度对DEA和DIA在土壤中的消解有显著影响，土壤温度由15℃上升至35℃，DEA在土壤中半衰期缩短了1.1 d （潮土）、8.1 d （黑土）、21 d消解率增加了27.8%（潮土）、21.1%（黑土）；DIA在土壤中半衰期缩短了1.8 d （潮土）、4.1 d （黑土）、21 d消解率增加了20.4%（潮土）、21.2%（黑土）.在不同湿度的潮土中的DEA和DIA消解呈现相同的变化趋势，在50%土壤湿度下消解最慢，随着土壤湿度增加，消解变快；在不同湿度的黑土中的DEA和DIA呈现相反的规律，DEA随湿度增加消解变慢，DIA与之相反.施药浓度从0.1 mg·kg-1增加到0.5 mg·kg-1，黑土和潮土中DEA和DIA的半衰期显著下降，施药浓度提高到至1 mg·kg-1时，两种土壤中的DEA和DIA消解速率下降，半衰期变长.DEA和DIA在黑土中的半衰期均比在潮土中长，但是在黑土中消解较完全.该研究结果将为土壤中阿特拉津以及DEA和DIA的环境安全评价提供依据.

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