QCMを用いたCO₂センサの温湿度特性

—アクリロニトリルスチレンを感応膜とした場合—

抄録

Temperature and humidity characteristics of a QCM coated with acrylonitrile styrene copolymer (AS) were studied as a CO₂ sensor. Consequently, the following results were obtained. 1) A frequency shift of the QCM is in proportion to CO₂ concentration under the condition of constant temperature. 2) The sensitivity for CO₂ concentration decreases in a linear fashion with a rise in temperature. 3) The frequency shift increases in a parabolic fashion and the sensitivity for humidity increases in a linear fashion with a rise in humidity under the condition of constant temperature. 4) The sensitivity for absolute humidity decreases in a parabolic fashion with a rise in temperature under the condition of constant absolute humidity.