A Fiber-Optic Reflacted Iron Sensor with Amberlyst A-27 as a Substrate

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (3): 377.

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A Fiber-Optic Reflacted Iron Sensor with Amberlyst A-27 as a Substrate

LU Jian-Zhong¹, ZHANG Zhu-Jun²

1. Department of Chemistry, Nanjing University, Nanjing 210008;
2. Department of Chemistry, Shaanxi Normal University, Xian 710062

Received:1994-04-19 Revised:1994-10-03 Online:1995-03-24 Published:1995-03-24

Abstract

Abstract: Afiber-optic iron reflected sensor has been developed by immobilizing pyrocatecholdisulfonic acid on Amberlyst A-27.The formation of the FeHLcomplex between iron ion and immobilized pyrocatedisulfonic acid caused a large reflected intensity change at 485 nm,which was due to a sharp change in colour of the reagent phase from white to violet,and iron ion in the solution can be determinated.The sensor has a higher sensitivity as well as good reversibility and has been applied to the determination of water samples. The reaction mechanism was also preliminary studied.

Key words: Fiber-optic sensor, Reflection, Iron ion

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LU Jian-Zhong, ZHANG Zhu-Jun. A Fiber-Optic Reflacted Iron Sensor with Amberlyst A-27 as a Substrate[J]. Chem. J. Chinese Universities, 1995, 16(3): 377.

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A Fiber-Optic Reflacted Iron Sensor with Amberlyst A-27 as a Substrate

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