高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 468.

• 研究论文 • 上一篇    下一篇

间接液相色谱电化学法测定酯类化合物

金利通, 叶建农, 宋伟, 方禹之   

  1. 华东师范大学化学系, 上海 200062
  • 收稿日期:1992-05-08 修回日期:1992-10-10 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 金利通

Indirect Electrochemical Detection with Liquid Chromatography for Non-electroactive Esters

JIN Li-Tong, YE Jian-Nong, SONG Wei, FANG Yu-Zhi   

  1. Department of Chemistry, East China Normal University, Shanghai, 200062
  • Received:1992-05-08 Revised:1992-10-10 Online:1993-04-24 Published:1993-04-24

PDF (PC)

被引次数

7

摘要： 本文用间接液相色谱电化学的方法对非电活性的酯类混合物甲酸甲酯、甲酸乙酯、乙酸甲酯和乙酸乙酯进行了分离和测定,其线性范围分别是3.2×10-9～4.4×10-8mol、2.4×10-9～2.8×10-8mol、2.0×10-9～4.0×10-8mol和2.2×10-9～2.4×10-8mol。对甲酸甲酯8次平行测定的相对标准偏差为0.89％。

关键词: 间接液相色谱电化学, 非电活性物质, 流动相添加剂, 酯的测定

Abstract: The method of indirect electrochemical detection accompanied with liquid chromatography (Indirect LCEC) was applied to separate and determine the non-electroactive esters containing methyl formate, ethyl formate, methyl acetate and ethyl acetate.It was shown that the peak current was linear in the range of 3.2×10-9-4.4×10-8mol, 2.4× 10-9-2.8×10-8 mol, 2.0×10-9-4.0×10-8 mol and 2.2×10-9-2.4×10-8 mol for these four compounds, respectively.The relative standard deviation of eight parallel determination is 0.89 %.The method was applied to determine the concentration of methyl formate in waste water, the recovery was in the range of 97% to 108%.The mechanism of indirect electrochemical detection of non-electroactive species is also discussed.The indirect electrochemical approach greatly expands the usage of electrochemical method, so that a variety of non-electroactive species can also been determined.

Key words: Indirect LCEC, Non-electroactive species, Mobile phase additive, Determination of ester

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