应用化学 ›› 2025, Vol. 42 ›› Issue (6): 802-810.DOI: 10.19894/j.issn.1000-0518.240235

• 研究论文 • 上一篇    下一篇

一种水溶性水杨酸类Fe(Ⅲ)铁指示剂的合成及应用

边美华1,2(), 何雨茵1, 彭家宁1,2, 张兴森1, 覃宋林1   

  1. 1.广西电网有限责任公司电力科学研究院,南宁 530023
    2.广西电力装备智能控制与运维重点实验室,南宁 530023
  • 收稿日期:2024-07-29 接受日期:2025-05-06 出版日期:2025-06-01 发布日期:2025-07-01
  • 通讯作者: 边美华
  • 基金资助:
    广西电网公司科技项目(GXKJXM20230096)

Synthesis and Application of a New Water-Soluble Salicylic Acid Based Sensor for Recognition of Fe(Ⅲ)

Mei-Hua BIAN1,2(), Yu-Yin HE1, Jia-Ning PENG1,2, Xing-Sen ZHANG1, Song-Lin QIN1   

  1. 1.Electric Power Research Institute of Guangxi Power Grid Co. ,Ltd. ,Nanning 530023,China
    2.Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment,Nanning 530023,China
  • Received:2024-07-29 Accepted:2025-05-06 Published:2025-06-01 Online:2025-07-01
  • Contact: Mei-Hua BIAN
  • About author:27250060@qq.com
  • Supported by:
    Guangxi Power Grid Corporation Science and Technology Project(GXKJXM20230096)

摘要:

为了应对复杂体系中Fe3+检测,通过5-甲酰水杨酸(FSA)与三羟甲基氨基甲烷(Tris)缩合反应合成了(Z)-5-(((1,3-二羟基-2-(羟甲基)丙-2-基)亚氨基)甲基)-2-羟基苯甲酸(Tris-SA),并成功实现在复杂水体中Fe3+的识别应用。 Tris-SA具有很好的水溶性且在可见光区没有吸收,当加入Fe3+后在可见光区(500 nm)出现新的吸收峰并且溶液颜色由无色变为紫红色,能进行目视观察。 根据500 nm吸收光谱的强度与Fe3+浓度的线性关系,得到其检测限为3.99×10-5 mol/L。 同时,研究了不同pH值及金属离子存在时对Tris-SA识别Fe3+能力的影响,并比较了Tris-SA同商用指示剂水杨酸及磺基水杨酸识别Fe3+的性能优劣。

关键词: 水杨酸衍生物, 吸收光谱, Fe3+, 比色识别

Abstract:

A new salicylic acid derivative (Z)-5-((1,3-dihydroxy-2-(hydroxymethyl) propan-2-ylimino) methyl-2-hydroxybenzoic acid (Tris-SA) was synthesized through the condensation reaction of 5-formylsalicylic acid with tris(hydroxymethyl)-aminomethane and was utilized for the colorimetric recognition of Fe3+ in complex systems. Tris-SA exhibits good water solubility and no absorption in the visible light region. Upon the addition of Fe3+, a new absorption peak appears at 500 nm and the solution color changes from colorless to purple-red. Based on the linear relationship between the intensity of the absorption spectrum at 500 nm and the concentration of Fe3+, the detection limit was determined to be 3.421×10-6 mol/L. The influence of different pH values and the presence of metal ions on the Fe3+ recognition capability of Tris-SA was also studied, and the performance of Tris-SA in recognizing Fe3+ was compared with that of commercial indicators salicylic acid and sulfosalicylic acid.

Key words: Salicylic acid derivative, Absorption, Fe3+ ion, Colorimetric recognition

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