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Effect of hydro carbon and nitrogen oxygen mixtures on photochemical smog formation under simulated transport conditions

, : Effect of hydro carbon and nitrogen oxygen mixtures on photochemical smog formation under simulated transport conditions. Journal of the Air Pollution Control Association 31(11): 1169-1172

The effect of urban pollution on downwind areas was studied. Concern was expressed over the appropriate hydrocarbon and NOx control strategy to be used in minimizing the effects of O3 and NO2 on urban population centers and their downwind environs. O3 and NO2 formation were studied in smog chamber irradiations as a function of the initial NOx concentration at 3 hydrocarbon concentrations. By carrying out the irradiations for a period of time equivalent to 1 solar day in a continuously diluting system, smog formation in a chemically reacting pollutant system under transport was simulated. The results of this experimental simulation suggested that hydrocarbon reduction reduced O3 in urban and downwind areas while NOx reduction increased O3 in the urban area and had little effect on O3 in downwind areas. Hydrocarbon and NOx reduction reduced atmospheric NO2 levels, with the effect of NOx reduction generally being more pronounced.


Other references

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Shimokawa, N.; Kato, Y.; Imai, K.; Wakabayashi, K., 1990: Changes in content of prolactin mRNA during the rat estrous cycle. An attempt was made to clarify the relationship between the synthesis of prolactin (PRL) and its secretion during the rat oestrous cycle by examining the changes in PRL mRNA, PRL secretion and anterior pituitary PRL content. At various stages of t...

Chirveches-Pérez, E.; Roca-Closa, J.; Puigoriol-Juvanteny, E.; Pons-Baños, J.; Iserin-Farrés, O.; Fernández-Burgos, P.; Bisquert-Illa, C.; Quer-Vall, X.; Clotet-Argemir, G.; Dot-Suárez, I., 2013: Descriptive study of the results of nursing interventions applied to surgical patients. Knowing the evolution of health outcomes of surgical patients during their hospital stay, evaluating NOC outcome criteria at admission and discharge. Prospective observational study conducted in the surgical hospital wards of the Hospital General...

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England, J.M.; Hewer, M.G.; Bashford, C.C.; Hughes-Jones, N.C.; Down, M.C., 1975: Simple method for automating the differential leucocyte-count. A simple method is described for analysing leucocyte-volume distribution curves to obtain a differential leucocyte-count. The results derived by this method agree well with the differential counts obtained by microscopical examination of the stain...