A fiber optic sensor for determination of 2,4-dichlorophenol based on iron(II) phthalocyanine catalysis

Yonghong Wang; Yilin Tong; Jun Huang; Kun Li; Huichao Liu; Liyun Ding; Mingtian Li

doi:10.1007/s11595-015-1314-3

Journal of Wuhan University of Technology Materials Science Edition ›› 2015, Vol. 30 ›› Issue (6) : 1317 -1320. DOI: 10.1007/s11595-015-1314-3

Organic Materials

A fiber optic sensor for determination of 2,4-dichlorophenol based on iron(II) phthalocyanine catalysis

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Abstract

A new fiber optic sensor based on the oxidation of 2,4-dichlorophenol (DCP) catalyzed by iron(II) phthalocyanine (Fe(II)Pc) was developed for the determination of DCP. The optical oxygen sensing film containing fluorescence indicator Ru(bpy)₃Cl₂ was used to detect the consumption of oxygen in solution. Moreover, a lock-in amplifier was used to determine the lifetime of the sensor head by detecting its phase delay change. The results reveal that the sensor has a linear detection range of 1.0×10^-6 - 9.0×10^-5 mol/L and a response time of 5 min. The sensor also has high selectivity, good repeatability and stability. It can be used effectively to determine DCP concentration in real samples.

Keywords

2,4-dichlorophenol / iron(II) phthalocyanine / phase delay change / fiber optic sensor / stability

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Yonghong Wang, Yilin Tong, Jun Huang, Kun Li, Huichao Liu, Liyun Ding, Mingtian Li. A fiber optic sensor for determination of 2,4-dichlorophenol based on iron(II) phthalocyanine catalysis. Journal of Wuhan University of Technology Materials Science Edition, 2015, 30(6): 1317-1320 DOI:10.1007/s11595-015-1314-3

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