CS2气体对人类健康和大气循环有重要影响作用, 最近有研究表明：工业燃煤可能是城市大气中CS2的另一个重要来源。提出一种以太阳散射光作为光源的被动差分吸收光谱(passive DOAS)对点源排放气体进行遥测的方法; 介绍了其基本原理和测量系统; 讨论了CS2的光谱分析方法, 包括参考光谱的选择问题, 及降低Ring效应对光谱反演影响的方法等; 并利用该技术对电厂烟羽中CS2进行扫描测量, 成功反演出烟羽中CS2的柱浓度; 证实了燃煤可产生一定的CS2, 为城市大气中CS2污染源的研究提供直接、有利的依据。

CS2 has a great effect on human health and atmospheric circulation. The new research recently indicates that CS2 in the urban air may primarily come from combustion of coal. A new method for remote sensing of emission from point source was proposed, based on passive differential optical absorption spectroscopy (DOAS), by taking the sun's radiation as light source. The principle and system of passive DOAS were introduced, and the method of spectrum analysis for CS2, including choosing “zero” reference spectrum and reducing the Ring effect for the spectra evaluation was discussed. CS2 in power plants’ emission plume is measured and the column density of CS2 is successfully retrieved. It indicates that burning of coal produces certain CS2 and provides useful evidence for research of main source of CS2.