傅里叶变换红外光谱(FTIR)技术已经成为监测大气痕量气体成分的有效方法。使 用中国科学院安徽光学紧密机械研究所自主开发的动态自准直开放式FTIR系统对甘肃省庆阳市化工园区进行了连续监测, 并在同等条件下将其与国外开放式FTIR 仪器的监测数据进行对比分析和性能比较。结果表明,所采用开放式FTIR能够很好地 在线实时监测化工园区的污染气体组分,为环境污染治理监督提供了科学监测方法,且在信噪比等方面优于国外相应的开放式FTIR仪器。

Fourier transform infrared spectroscopy (FTIR) technology has become an effective method for monitoring trace gas composition in atmosphere. The dynamic auto-collimation open FTIR system devoloped by Anhui Institute of Optics and Fine Mechamics, CAS, has been used to continuously monitor the atmospheric trace gases in the chemical industrial park in Qingyang city, Gansu Province, China. Continuous monitoring was carried out and compared with the monitoring data of foreign open FTIR instruments under the same conditions. The results show that the open FTIR can monitor the pollution gas components in the chemical park on-line in real time, and provide a scientific monitoring method for environmental pollution control supervision. The domestic open FTIR is superior to the corresponding open FTIR instruments from other foreign countries in terms of signal-noise ratio.