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学科主题: 物理化学
题名: Flow Injection Small-volume Fiber-optic pH Sensor Based on Evanescent Wave Excitation and Fluorescence Determination
作者: Xiong, Yan2, 3;  Huang, Ying2;  Ye, Zhongbin2, 3;  Guan, Yafeng1
通讯作者: 关亚风
关键词: Fiber-optic sensor ;  Evanescent wave excitation ;  Small-volume ;  Flow injection ;  Fluorescence determination
刊名: JOURNAL OF FLUORESCENCE
发表日期: 2011-05-01
DOI: 10.1007/s10895-010-0790-2
卷: 21, 期:3, 页:1137-1142
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 2,4
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
摘要: Flow Injection Small-volume Fiber-optic pH Sensor Based on Evanescent Wave Excitation and Fluorescence Determination
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: A small-volume fiber-optic pH sensor (FOEWS) based on evanescent wave excitation is developed and evaluated. The sensor is simply fabricated by inserting a decladded optical fiber into a transparent capillary tube. A microchannel between the optical fiber and the capillary inner wall was formed and acted as flow cell for solution flowing through. The pH-sensitive fluorophore of fluorescein can be excited by the evanescent wave field produced on the fiber core surface to produce emission fluorescence. pH value was then sensed by its enhancing effect on the emission fluorescence intensity. The response range of the sensor is from pH 2.09 to pH 8.85 and the linear range is from pH 3.25 to 8.85. The proposed sensor has a small detection volume of 2.5 mu L and a short response time of 8 s. It has been applied to measure pH values of real water samples and was in good agreement with the results obtained by commercial pH meter.
关键词[WOS]: SYSTEM ;  SPECTROSCOPY ;  POLYANILINE ;  COPOLYMER ;  ACIDITY
语种: 英语
WOS记录号: WOS:000291999400040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115452
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China
2.SW Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Peoples R China
3.SW Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Peoples R China

Recommended Citation:
Xiong, Yan,Huang, Ying,Ye, Zhongbin,et al. Flow Injection Small-volume Fiber-optic pH Sensor Based on Evanescent Wave Excitation and Fluorescence Determination[J]. JOURNAL OF FLUORESCENCE,2011,21(3):1137-1142.
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