高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 492.

• 研究简报 • 上一篇    下一篇

停流式流动注射催化光度法测定水中痕量亚硝酸根的研究

张贵珠, 刘善军, 何锡文, 史慧明   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:1992-07-08 修回日期:1992-11-18 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 张贵珠
  • 基金资助:

    国家自然科学基金

Studies on Kinetic Spectrophotometric Determination of Trace NO2- by Stopped-flow Injection Method

ZHANG Gui-Zhu, LIU Shan-Jun, HE Xi-Wen, SHI Hui-Ming   

  1. Department of Chemistry, Nankai University, Tianjin, 300071
  • Received:1992-07-08 Revised:1992-11-18 Online:1993-04-24 Published:1993-04-24

PDF (PC)

被引次数

15

关键词: 亚硝酸根, 催化动力学分析, 停流式流动注射分析, 罗丹明B

Abstract: Based on the catalytic effect of trace NO2- on the oxidation of Rhodamine Bby potassium bromate, a new kinetic spectrophotometric method for the determination of NO2- has been developed with stopped-flow injection technique.Beer's law is obeyed for NO2- in the range of 0.24-9.0 ng/ mLand the limit of detection is 2.4×10-10 g/mL.The method has been applied to the determination of NOf in water and the sampling frequency is 60 samples/h with satisfactory results.

Key words: Nitrite, Catalytic kinetic analysis, Stopped-flow injection method, Rhodamine B

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