Study of Halitosis-Substance Sensing at Low Concentration Using an Electrochemical Sensor Array Combined with a Preconcentrator
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概要
- 論文の詳細を見る
A method for quantitative detection and discrimination of volatile sulfur compounds (VSCs) using an electrochemical sensor array combined with a preconcentrator was proposed. Halitosis is due to VSCs produced by bacterial metabolism inside the oral cavity. An organoleptic test is typically performed by a dental clinician for the assessment of halitosis, although it is a subjective test. Thus, an objective evaluation of halitosis is required. In this study, it was possible to discriminate among the VSCs such as hydrogen sulfide (H2S), methyl mercaptan (CH3SH), and dimethyl sulfide ((CH3)2S) over the range of 200ppb to 1000ppb. Moreover, mixture of two VSC vapors (H2S and CH3SH) at various mixing ratios were measured. The results indicated that the sensor responses to mixed samples satisfied the linear superposition. The mixture compositions of VSCs were almost correctly obtained from the sensor responses using partial least squares (PLS) regression analysis.
- 社団法人 電気学会の論文
- 2006-07-01
著者
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NAKAMOTO Takamichi
Graduate School of Science and Engineering, Tokyo Institute of Technology
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Nakamoto Takamichi
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Nakamoto Takamichi
Tokyo Inst. Of Technol. Tokyo
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SASAYA Yosuke
Graduate school of science and engineering, Tokyo Institute of Technology
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Sasaya Yosuke
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Nakamoto Takamichi
Graduate School Of Sci. And Engineering Tokyo Inst. Of Technol.
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