机构地区: 中国科学院安徽光学精密机械研究所合肥物质科学研究院环境光学与技术重点实验室
出 处: 《大气与环境光学学报》 2007年第2期140-145,共6页
摘 要: 开发了基于高灵敏度电离室检测技术的通用型光离子化检测器。对光离子化检测器的核心部分进行了分析与设计,着重阐述了系统设计的原则、结构及特性。利用配制的标准气体和PID检测仪进行联测优化和线性度测量,并给出了仪器实验性能的实例。证明了该光离子化检测系统的确能够检测特定极低浓度的有机化合物,并且可以区分不同梯度的同种样品。 On the basis of high-sensitive testing technique of the ionization chamber, a general purpose photoionization detector is developed. The key part of photoionization detector is analyzed and designed. The principle, structure and characteristic of the system design is especially demonstrated. The combined test and optimization and linearity degree measurement with mixed standard gas and PID instrument were carried out. It is proved that the photoionization detection system can detect the volatile organic compounds of ultra-low concentration, and the different gradients of the same kind of sample can be distinguished.
关 键 词: 光离子化检测系统 光电离传感器 微电流放大器 数据采集
领 域: [环境科学与工程]