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Fiber Optic Bio-sniffer (Biochemical Gas Sensor) using UV-LED light for Monitoring Ethanol Vapor with High Sensitivity & Selectivitiy

文献类型： 会议论文

第一作者： H. Kudo

作者： H. Kudo 1 ; K. Miyajima 1 ; D. Takahashi 1 ; T. Arakawa 1 ; H. Saito 1 ; K. Mitsubayashi 1 ; M. Sawai 2 ;

作者机构： 1.Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University

2.Graduate School of Information Science and Technology Tokai University

会议名称： IEEE Sensors Conference

主办单位：

页码： 1872-1875

摘要： A fiber optic bio-sniffer (biochemical gas sensor) for alcohol gas monitoring with high sensitivity and high selectivity was fabricated and tested. The bio-sniffer is a gas sensor that uses molecular recognition of enzyme to improve selectivity. Usually, enzyme loses activity in the gas phase. Applying a flow-cell with a gas-intake window to the sensing probe, enzyme immobilized at the sensing region was kept in the sufficient wet condition to maintain activity. The bio-sniffer measures ethanol (EtOH) vapor by measuring fluorescence of nicotinamide adenine dinucleotide (NADH), which is produced by enzymatic reaction at the flow-cell. In order to construct a simplified system suitable for on-site applications, a high-intensity ultraviolet light emitting diode (UV-LED) was utilized as an excitation light. Owing to low power consumption comparing with previous light sources, the bio-sniffer was considered to be suitable for laptop applications such as on-site monitoring. According to the characterization, the bio-sniffer for was useful for continuous alcohol monitoring and showed high selectivity. The calibration range was 0.30-300 ppm which is suitable for evaluation of capacity to metabolize alcohol.

分类号： TP212-53

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