研究目的

The rapid advances in industry and development of society results in the air pollution becomes a serious environmental issue affecting human health. Volatile organic compounds (VOCs) are identified as the main origin of pollutions in the air, due to many of them can be toxic or carcinogenic even at low concentrations. The monitoring of VOCs concentration is of significant important to environmental monitoring and to human health. Methods based on gas chromatograph and gas chromatograph/mass spectrometer are widely used for the analysis of VOCs. However, the instruments of these methods used are bulky, expensive, and unsuitable for real-time, in-situ monitoring. In recent years, gas sensors have received much attention and interest because they are capable of real-time measurement of temporal change in VOC concentrations, which can provide timely results in the actual locale for the evaluation of the potential hazards of VOCs.

研究成果

In summary, a gas sensor for iso-butanol was developed based on the CTL emission during the catalytic oxidation of iso-butanol on MgO surface. The sensor exhibits high sensitivity and good specificity to iso-butanol. The possible mechanism behind the CTL emission of iso-butanol on MgO surface was investigated. The sensor was applied to the determination of iso-butanol in spiked samples, satisfactory results were obtained. The proposed sensor offers a sensitive, selective and convenient way for the rapid monitoring of iso-butanol, it can be potentially applied in environment and industry grounds.

研究不足

The technical and application constraints of the experiments, as well as potential areas for optimization, were not explicitly mentioned in the paper.