Surface acoustic wave gas sensor for nitrogen dioxide using phthalocyanines as chemical interfaces. Effects of nitric oxide, halogen gases, and prolonged heat treatment
作者： Maarten S. Nieuwenhuizen , Arnold J. Nederlof
DOI: 10.1021/AC00154A010
关键词:
摘要: The effect of CO, NO, and O/sub 2/ on the response a SAW (surface acoustic wave) chemosensor for NO/sub has been studied. A description is given measuring equipment existing mass flow controlled automatic gas dilution system. Copper iron phthalocyanine were used as chemical interface. Simultaneously, influence ambient atmospheres (N/sub 2/) was investigated. Predictions from ultraviolet-visible experiments in solution do not hold gaseous environments. Also electronegative gases like halogens Response up to 40 times measured. Prolonged heat treatment affects sensitivity negatively well time. This asks more stable All results are discussed terms general performance criteria sensors such selectivity, sensitivity, time, reversibility, stability.
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