Ionizing transducer with detection function, and detection method thereof for nitrotoluene

Abstract

The invention discloses an ionizing transducer with detection function, and a detection method thereof for nitrotoluene. The ionizing transducer comprises an aluminum plate electrode plate and nanometer carbon-tube electrode plate; the aluminum electrode plate and the left end and right end of the nanometer carbon-tube are mutually isolated through a left insulating support plate and a right insulating support plate, and the height of the left end insulating support plate is greater than that of the right end insulating support plate; a back baffle plate and a front baffle plate are arranged at the front side and the back side of the aluminum plate electrode plate and the nanometer carbon-tube electrode plate; heating resistance wires are arranged at the inner side of the left end insulating support plate or the inner side of the front side plate and the back side plate; the left end insulating support plate, the right end insulating support plate, the back baffle plate, the front baffle plate, the aluminum plate electrode plate and the nanometer carbon-tube electrode plate are surrounded as a closed chamber, a to-be-detected gas inlet is formed on the back baffle plate, and a to-be-detected gas outlet is arranged on the front baffle plate. Through the sensor disclosed by the invention, the concentration of the detected gas can be accurately detected, and the gas can be ionizedas the plasma, thereby providing the plasma permanently ionized by the detected gas for the component precise detection in the next step.

Description

technical field [0001] The invention relates to a gas sensor, in particular to an ionization sensor capable of detection and a method for using the sensor to detect the mixed gas of p-nitrotoluene and air. Background technique [0002] Existing gas sensors (such as "Carbon Nanotube Film Micro-Nano Ionization Sensor" whose authorized announcement number is CN102081071B), its detection mechanism is: by applying voltage between the electrode plates, detecting the current data between the electrode plates, To determine the gas. The sensor with this structure has the following defects: First, the accuracy of measurement is not high, because the measured current data is only a transient ion flow, and does not include ionized discharge current. When the voltage is canceled, the gas returns to its original state. state, so the measured data is not abundant, which affects the accuracy of its measurement; second, the sensor with this structure has a single function and cannot provide...

AI Technical Summary

Problems solved by technology

The sensor with this structure has the following defects: First, the accuracy of measurement is not high, because the measured current data is only a transient ion flow, and does not include ionized discharge current. When the voltage is canceled, the gas returns to its original state. state, so the measured data is not abundant, which affects the accuracy of its measurement; second, the sensor with this structure has a single function and cannot provide the plasma sensor with the plasma of the gas to be detected, because in the actual environment , only by further detection of the plasma of the detected gas can the composition of the measured gas be determined, such as toluene and xylene, in the existing gas sensors, their electrical property curves are very similar, and there is no way to distinguish them. For example, Inert gas and nitrogen, the voltage curve is also difficult to distinguish

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