环境空气TVOC在线监测系统的研究与开发

Research and Development of The Environmental Air TVOC Online Monitoring Device

摘要:

为了解决传统设备对环境空气TVOC含量进行检测时存在灵敏度低、检测线高的问题,设计了一款适用于现场快速分析、无需人员在环境现场的环境空气TVOC在线实时监测及预警系统。该系统采用热解吸和PID传感器相结合的技术实现了对环境空气TVOC含量的痕量检测。实际测试结果表明,该系统具有低至1ppb的检测线,示值误差小于5%,重复性小于3%,稳定性良好,达到了预期的设计要求。

Abstract:

In order to solve the problem of low sensitivity and high detection line in the detection of ambient air TVOC content by traditional equipment, an online real-time monitoring and warning system for ambient air TVOC that is suitable for rapid field analysis and does not require personnel to be on the scene is designed. The system uses thermal desorption and PID sensor to realize trace detection of ambient air TVOC content.The actual test results show that the system has detection lines as low as 1 ppb, with an indication error of less than 5 %, repeatability of less than 3 %, and good stability, which meets the expected design requirements.