Bertolaccini M A, Cerquiglini Monteriolo S, Di Grazia B
Ann Ist Super Sanita. 1978;14(3):523-30.
Patterns of diurnal variations for the air concentration of some pollutants emitted from motorvehicles are presented. Primary pollutants (carbon monoxide, nitric oxide and reactive hydrocarbons) and secondary pollutants (ozone and nitrogen dioxide) are continuously monitored since 1974. Different typical patterns have been obtained in the winter and in the summer season. The values of r for 14 regression curves calculated for couples of primary pollutants are in the range from 0.73 to 0.95, indicating their common source. Diurnal patterns obtained for summer and winter are discussed in the light of photochemical atmospheric processes Values for the ratio NO/NO2 are higher than 1 in the winter season; the same ratio is lower than 1 in summer, from 13 to 24 hours.
本文展示了机动车排放的某些污染物在空气中的日变化模式。自1974年以来，对主要污染物（一氧化碳、一氧化氮和活性烃）和次要污染物（臭氧和二氧化氮）进行了连续监测。在冬季和夏季获得了不同的典型模式。为主要污染物对计算的14条回归曲线的r值在0.73至0.95范围内，表明它们有共同的来源。根据光化学大气过程讨论了夏季和冬季获得的日变化模式。冬季NO/NO2比值高于1；夏季同一比值在13至24小时低于1。
