高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (2): 140.

• 研究论文 • 上一篇    下一篇

流动注射-分光光度分析鉴别铬的化学形态的研究

魏庆珣, 王胜天, 王利安   

  1. 吉林大学环境科学系
  • 收稿日期:1988-07-07 出版日期:1990-02-24 发布日期:1990-02-24
  • 通讯作者: 魏庆珣

Identification of Chemical Behaviour of Chromium in water by Flow Injection-Spectrophotometry

Wei Qingxun, Wang Shengtian, Wang Li'an   

  1. Department of Environmental Science, Jilin University, Changchun
  • Received:1988-07-07 Online:1990-02-24 Published:1990-02-24

摘要: 提出了一个FI-SP连续分析水中Cr(Ⅵ)和T-Cr的方法。Cr(Ⅵ)直接用二苯碳酰二肼试剂显色测定;T-Cr在PbO2柱氧化Cr(Ⅲ)后显色测定。本法测定Cr的浓度范围是0.05~3.0mg·L-1,进样颇率为Cr(Ⅵ)200h-1、T-Cr120h-1。方法用于实际样品分析获得了令人满意的结果。

关键词: 流动注射分析, 化学形态鉴别, 铬的测定

Abstract: Amethod of sequential determination of Cr ( Ⅵ) and T-Cr by FIA-SPin water was developed. The Cr( Ⅵ ) was directly measured with DPCby FIA-SPanalysis and the determination of T-Cr was carried out after the pre-oxidation of Cr( Ⅲ ) to Cr(Ⅵ) with PbO2 column at 80℃ before sample injection.Using the method described in this paper Cr( Ⅵ) or T-Cr can be determined at the concentration rangeof 0.05 - 3.0 mg/L. The sampling rate is 120 and 200 h-1 for T-Cr and Cr ( Ⅵ ) respectively.This method was applied to practical samples and the results obtained is satisfactory.

Key words: Flow Injection-Spectrophotometry, Identification of chemical behaviour, Determination of Chromium

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