NMHC/NOX ratio

CORRELATION OF THE RATIO OF NON-METHANE HYDROCARBON AND NITROGEN OXIDES CONCENTRATION IN THE ATMOSPHERE AND OUTDOOR ENVIRONMENT

Submitted by on Sat, 07/06/2013 - 16:41

The correlation of atmospheric pollution by VOC and NMHC/NOX ratio has been found. By usingNMHC/NOX ratio, the source of NMHC in the region can be presumed without effects from the diffusionand the dilution by the meteorological conditions. At general measurement station in A city OsakaPrefecture, the NMHC/NOX ratio shows high value in summer though NMHC and NOX concentrationshow high value in early winter. As opposed to city A, traffic measurement station C doesnt show thispattern. It suggests that the amount of the exhaust of NMHC increases along with the temperature.