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在线测量Fe3+浓度的塑料光纤倏逝波传感系统

On-Line Measurement of Fe3+ Concentration of Evanescent Wave Sensing System Based on Plastic Optical Fiber Biosensor

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摘要

为了准确在线测量微生物燃料电池(MFC)内Fe3+的浓度,基于倏逝波原理研制了一种D形塑料光纤Fe3+浓度传感器。采用静电层层自组装技术,将含有Fe3+指示剂的材料组装在D形光纤表面,构成Fe3+敏感区。实验研究表明: 传感器的灵敏度、响应时间与敏感膜的厚度和指示剂的含量有关。当Fe3+敏感膜自组装层数为20层时,传感器对含Fe3+离子溶液浓度为0.01mol·L-1的响应时间约13min,最低检测极限达10-6mol·L-1,表明该传感器对Fe3+离子水溶液具有良好的光学响应性能。

Abstract

To accurately measure the Fe3+ concentration existing in microbial fuel cell (MFC), a plastic optical fiber (POF) evanescent wave sensor with D-shape structure was put forward. The Fe3+ indicator sensitive film was deposited on the surface of POF through layer-by-layer(L-b-L) electrostatic self-assembly technique as indicator to the concentration of Fe3+. Experimental results illustrate that the sensitivity and response time are related to the number of sensitive film layers and the content of indicator. When the layer number is 20, the response time is about 13min, and the minimum detection limit hits 10-6mol·L-1. The results show that the sensor has good optical response to Fe3+ aqueous solution.

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中图分类号:TP212

DOI:10.16818/j.issn1001-5868.2017.05.007

所属栏目:光电器件

基金项目:国家自然科学基金项目(51276209);重庆市科委科学技术研究项目(cstc2016jcyjA0311);重庆市教委科学技术研究项目(KJ1600901).

收稿日期:2017-02-06

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胡新宇:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
田霞:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
赵明富:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
钟年丙:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054

联系人作者:赵明富(zmf@cqut.edu.cn)

备注:胡新宇(1967-),男,重庆人,博士,教授,硕士生导师,主要从事光电信号及智能信息传感系统的研究;

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引用该论文

HU Xinyu,TIAN Xia,ZHAO Mingfu,ZHONG Nianbing. On-Line Measurement of Fe3+ Concentration of Evanescent Wave Sensing System Based on Plastic Optical Fiber Biosensor[J]. Semiconductor Optoelectronics, 2017, 38(5): 656-660

胡新宇,田霞,赵明富,钟年丙. 在线测量Fe3+浓度的塑料光纤倏逝波传感系统[J]. 半导体光电, 2017, 38(5): 656-660

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