利用SOF-FTIR监测重庆晏家工业区挥发性有机物排放

Monitoring of VOCs Emissions of Yanjia Industrial Park in Chongqing Based on SOF-FTIR Technology

挥发性有机物（VOCs）是光化学污染物的主要前体物,是影响城市和区域大气质量的重要污染物。工业生产过程中排放的VOCs种类、来源和污染特征复杂,测量中存在许多未知因素,且一直缺乏便捷和快速的监测手段。利用基于太阳直射光的车载太阳掩星傅里叶红外光谱技术（Solar Occultation Flux-FTIR,SOF-FTIR）快速扫描长寿晏家工业区并进行实时VOCs监测,获得其垂直柱浓度,大多浓度最大值位于10-60 ppm·m区间,且该工业区易形成局地污染汇聚。

Volatile organic compounds （VOCs）, which participated in photochemical reactions, were main precursor of photochemical pollution, and also the critical pollutants that currently affected China＇s urban air quality. The pollution situation of VOCs was complex and had many unknown factors, due to the lack of convenient and fast monitoring measurement. The technology of solar occultation flux based on FTIR（SOFFTIR）was used to rapidly scan pollution areas for real-time monitoring, and it was found that vertical column density peak values of most VOCs was ranged from 10 ppm·m to 60 ppm·m, and local pollution was easily formed.