【摘要】 差分吸收光谱(DOAS)一种是环境空气自动监测技术,可同时监测环境空气中多种气体成分。其分析方法采用国家环保部认可和美国EPA推荐的方法。将差分吸收光谱分析仪与点式干法仪器共同组成一套环境空气质量监测系统。采用钢瓶标准气,以等效浓度的方法 ,通过调整检查标气池的长度,实现对差分吸收光谱系统的多点校准功能,并与点式采样仪器进行了比较。结果表明:整套系统运行正常,维护方便,而且能满足校准的控制要求;两种方法有很好的可比性。更多还原

【Abstract】 An Ambient Air Quality Monitoring System is composed of a Differential Optical Absorption Spectroscopy Instrument and a Point-dry machine .It uses a standard gas cylinder also with the equivalent concentration ,by adjusting and examinig the length of the gas poor ,it implements the multi-point calibration function for the Differential Optical Absorption Spectroscopy System .In addition,it is also compared with the point-dry machine. The results show that the system operate well. It is convenient in maintenance and the control requirements of the calibration results can be met. Those two mathads are full of comparability.更多还原