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土壤中结合态苯氧羧酸类除草剂的测定

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苏允兰, 莫汉宏, 安凤春. 土壤中结合态苯氧羧酸类除草剂的测定[J]. 环境化学, 2001, 20(6): 577-581.
引用本文: 苏允兰, 莫汉宏, 安凤春. 土壤中结合态苯氧羧酸类除草剂的测定[J]. 环境化学, 2001, 20(6): 577-581.
shu
Su Yunlan, Mo Hanhong, An Fengckun. THE DETERMINATION OF BOUND RESIDUES OFCHLOROPHENOXY ACETIC HERBICIDES IN SOILS[J]. Environmental Chemistry, 2001, 20(6): 577-581.
Citation: Su Yunlan, Mo Hanhong, An Fengckun. THE DETERMINATION OF BOUND RESIDUES OFCHLOROPHENOXY ACETIC HERBICIDES IN SOILS[J]. Environmental Chemistry, 2001, 20(6): 577-581.
shu

土壤中结合态苯氧羧酸类除草剂的测定

  • 基金项目:

    中国科学院资源与生态环境研究重大项目B资助的项目

THE DETERMINATION OF BOUND RESIDUES OFCHLOROPHENOXY ACETIC HERBICIDES IN SOILS

  • 1.

    Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085

  • Fund Project:

  • 摘要: 利用超临界CO2流体萃取的方法提取2甲4氯(MCPA),2,4-D和除草醚在三种土壤中的结合残留。结果表明,在培养200d的时间内,MCPA的结合残留量为1.01-5.12mg·kg-1,占添加总量的2.0-10.1%;2,4-D的结合残留量为0.24-2.65mg·kg-1,占添加总量的0.5-5.3%;除草醚的结合残留量为6.53-19.30mg·kg,-1,占添加总量的12.9-38.2%.农药结合态与游离态含量的比值随时间的延长而增加。
    Abstract: In this paper, we used the method of supercritical CO2 extraction to extract bound pesticide residues from three kinds of soils. The pesticides included MCPA, 2,4-D and nitrofen. Within 200 days of incubation time, the concentration of bound residue of MCPA was 1.01-5.12 mg·kg-1 in soils which was 2.0-0.1% of the fortification level; the concentration of bound residue of 2,4-D was 0.24-2.65 mg·kg-1 which was 0.5-5.3% of the fortification level; nitro-fen was 6.53-9.30mg`kg-1 which was 12.9-38.2% of the fortification level. The ratios bet-ween bound residues and extractable residues of 2,4-D and nitrofen were increasing with time.
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  • 收稿日期:  2000-11-30
苏允兰, 莫汉宏, 安凤春. 土壤中结合态苯氧羧酸类除草剂的测定[J]. 环境化学, 2001, 20(6): 577-581.
引用本文: 苏允兰, 莫汉宏, 安凤春. 土壤中结合态苯氧羧酸类除草剂的测定[J]. 环境化学, 2001, 20(6): 577-581.
shu
Su Yunlan, Mo Hanhong, An Fengckun. THE DETERMINATION OF BOUND RESIDUES OFCHLOROPHENOXY ACETIC HERBICIDES IN SOILS[J]. Environmental Chemistry, 2001, 20(6): 577-581.
Citation: Su Yunlan, Mo Hanhong, An Fengckun. THE DETERMINATION OF BOUND RESIDUES OFCHLOROPHENOXY ACETIC HERBICIDES IN SOILS[J]. Environmental Chemistry, 2001, 20(6): 577-581.
shu

土壤中结合态苯氧羧酸类除草剂的测定

  • 收稿日期:  2000-11-30
基金项目:

中国科学院资源与生态环境研究重大项目B资助的项目

摘要: 利用超临界CO2流体萃取的方法提取2甲4氯(MCPA),2,4-D和除草醚在三种土壤中的结合残留。结果表明,在培养200d的时间内,MCPA的结合残留量为1.01-5.12mg·kg-1,占添加总量的2.0-10.1%;2,4-D的结合残留量为0.24-2.65mg·kg-1,占添加总量的0.5-5.3%;除草醚的结合残留量为6.53-19.30mg·kg,-1,占添加总量的12.9-38.2%.农药结合态与游离态含量的比值随时间的延长而增加。

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