中华医学超声杂志

应用化学 ›› 1996, Vol. 0 ›› Issue (1): 80-82.

• 研究简报 • 上一篇    下一篇

在线预浓缩FIA比浊法测定水中微量硫酸根

李俊锋1, 郭如江1, 赵楠1, 李绍民2   

  1. 1. 长春地质学院应用化学系 长春 130026;
    2. 吉林大学环境科学系
  • 收稿日期:1995-04-20 修回日期:1995-08-24 出版日期:1996-02-10 发布日期:1996-02-10

Determination of Micro-Amount of Sulphate in Water with On-Line Preconcentration by Flow Injection-Turbidimetry

Li Junfeng1, Guo Rujiang1, Zhao Nan1, Li Shaomin2   

  1. 1. Department of Applied Chemistry, Changchun University of Earth Science, Changchun 130026;
    2. Department of Environmental Science, Jilin University, Changchun
  • Received:1995-04-20 Revised:1995-08-24 Published:1996-02-10 Online:1996-02-10

PDF

441

被引次数

2 | 1

摘要： 流动注射比浊法测定微量硫酸根已有报道[1,2],由于干扰组分的作用使得前处理操作麻烦,影响测定的准确度.本文提出用VS-I阴离子交换纤维在线分离富集硫酸根,使测定准确度和灵敏度都得到相应的提高,同时发挥了流动注射分析的操作简便快速的特点,选择不同的吸附时间,可测定不同含量范围的硫酸根离子,使测定含量范围大为加宽.对实际样品分析.结果令人满意.

关键词: 在线预浓缩, FIA, 硫酸根

Abstract: A flow injection-turbidimetric method for determination of sulphate in water with on-line preconcentration by cation exchange fiber was established.Under the conditions of the acidity of sample being PH=5.0 and the concentration of eluent(NaCl) being 1.0 mol/L,the results of the determination of sulphate are satisfactory.The linear range,the recovery,the detection limit and the RSD of the present method are 8～320 mg/L,98%～102%,0.11mg/L and 0.26% respectively.The sampling rate is 40/h.

Key words: sulphate, on-line preconcentration, FIA, turbidimetry

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