激光与光电子学进展, 2020, 57 (9): 093003, 网络出版: 2020-05-06
基于差分光学吸收光谱技术的交通主干道污染气体监测 下载: 1039次
Traffic Pollution Gas Monitoring Based on Differential Optical Absorption Spectroscopy Technology
光谱学 差分光学吸收光谱 污染监测 交通排放 污染气体 spectroscopy differential optical absorption spectroscopy (DOAS) pollution monitoring traffic emission pollution gas
摘要
采用长程差分光学吸收光谱技术,对青岛市海尔路和银川东路交叉路口的污染气体进行实时连续监测,获得2017—2018年大气主要污染物NO2、O3和 SO2的含量,并与附近环境监测站的同步监测数据进行对比。结果表明,二者具有很高的一致性,NO2和O3的小时平均结果相关系数分别为0.78和0.798,月平均结果相关系数分别为0.91和0.84,其中NO2的浓度分布呈现明显的早晚双峰特征。与实时获得的车流量数据进行相关性分析,结果显示:NO2浓度与交通流量呈强正相关,相关系数达到0.95;NO2浓度存在工作日高于周末的显著“周末效应”。
Abstract
In this study, the concentration levels of NO2, O3, and SO2 at the crossroad of Haier Road and East Yinchuan Road, Qingdao, are continually monitored in real-time based on the long path differential optical absorption spectroscopy (LP-DOAS) from 2017 to 2018. The concentration levels of NO2, O3, and SO2 obtained using LP-DOAS are compared with those obtained at the environmental monitor station, and a good agreement between these is found. The correlation coefficients of NO2 and O3 hourly average results are 0.78 and 0.798, respectively, and the correlation coefficients of monthly average results of these are 0.91 and 0.84, respectively. The diurnal variation of NO2 concentration presents two peaks, i.e., in the morning and evening. Compared with the real-time traffic flow, NO2 concentration is strongly positively correlated with traffic flow, and the correlation coefficient is 0.95. There is a significant weekend effect in the NO2 concentration on working days relative to weekends.
王章军, 郝菁, 宋晨光, 李先欣. 基于差分光学吸收光谱技术的交通主干道污染气体监测[J]. 激光与光电子学进展, 2020, 57(9): 093003. Zhangjun Wang, Jing Hao, Chenguang Song, Xianxin Li. Traffic Pollution Gas Monitoring Based on Differential Optical Absorption Spectroscopy Technology[J]. Laser & Optoelectronics Progress, 2020, 57(9): 093003.