【摘要】 报导了用两只气敏元件同时测出空气中同一微量有害气体的电阻-浓度曲线,并利用最小二乘法拟合为两条直线,将其拟合斜率比ε_j与拟合后的差值δ_ji做为判据,判定空气中微量有害气体种类与浓度的拟合法。更多还原

【Abstract】 A new method of detecting poisonous gases in air is reported, when two gas sensors are used to detect the same poisonous gas, two obtained electric resistance vs. concentration curves are simulated to two lines with least square method. The ratio and the difference of the slops of the two lines are used as the criterion for detecting the type the concentration of the poisonous gas. The method has a practical value in detecting environmental pollution.更多还原