A Fiber Optic Sensor for Determination of 2,4-Dichlorophenol Based on Oxygen Oxidation Catalyzed by Iron(III) Tetrasulfophthalocyanine

作者：Tong, Yilin; Li, Dapeng; Huang, Jun^*; Zhang, Cong; Li, Kun; Ding, Liyun

来源：BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2013, 34(11): 3307-3311.

DOI：10.5012/bkcs.2013.34.11.3307

• 2,4-Dichlorophenol
• Iron(III) tetrasulfophthalocyanine
• Fiber optic sensor
• Phase delay

A new fiber optical sensor was developed for the determination of 2,4-dichlorophenol (DCP). The sensor was based on DCP oxidation by oxygen with the catalysis of iron(II) tetrasulfophthalocyanine (Fe(III)PcTs). The optical oxygen sensing film with Ru(bpy)(3)Cl-2 as the fluorescence indicator was used to determine the consumption of oxygen in solution. A lock-in amplifier was used for detecting the lifetime of the oxygen sensing film by measuring the phase delay change of the sensor head. The different variables affecting the sensor performance were evaluated and optimized. Under the optimal conditions (i.e. pH 6.0, 25 degrees C, Fe(M)PcTs concentration of 0.62 mg/mL), the linear detection range and response time of the sensor are 1.0 x 10(-6)-9.0 x 10(-6) mol/L and 250 s, respectively. The sensor displays high selectivity, good repeatability and stability, and can be used as an effective tool in analyzing DCP concentration in practical samples.

• 出版日期2013-11-20
• 单位武汉理工大学; 许昌学院