VOCs Pollution Characteristics in Key Areas of Deyang City
SPI-MS 2000 online VOC mass spectrometer was adopted for cruise monitoring of industrial parks and key areas of Deyang city for 22 months.The cruise results show that the abnormal emissions from industrial sources in Deyang city have a high intensity and frequency.The VOCs concentrations are higher than 15000 μg/m3 in some time durations,there are many enterprises with abnormal emissions in the south of Jingyang District and in the north of Guanghan,and concentrations in the neighboring regions of some enterprises are rela-tively high.The food processing,mechanical manufacturing,and other sources of pollution emission concentra-tions are relatively high,which has a great impact on the environment.Aromatic hydrocarbon pollutants have high proportions and should be managed and controlled as a focus among VOCs emissions from all kinds of sources.The main ozone production precursors in Deyang are such as xylene,ethylbenzene,pentene,toluene,pentane,and hexane.Mechanical manufacturing,outdoor paint spraying,gas stations/oil depots,and other industries are majorly involved.Aromatic hydrocarbon and alkane have high proportions in VOCs components in urban areas'daily life.Monitoring results can be output in a short period of time through cruise monitoring.It can be very effective when the pollution investigation in a short time span is responded to.The pollution map can also be drawn through VOC pollution long-term monitoring in the atmosphere.It has a broad prospect in VOCs'pollution control in the region.Organized and unorganized emissions of enterprises can be further monitored manually through the cruise results.Which is crucial for pollution control and emission reduction of enterprises.
VOCscruise monitoringpollution in a short period of timeregional pollution
万方数据
维普
