LONG-RANGE TRANSPORT OF GASEOUS AND PARTICULATE OXIDIZED NITROGEN COMPOUNDS

https://doi.org/10.1016/B978-0-08-031448-8.50006-9Get rights and content

Abstract

Measurements of NO2, PAN, HNO3 and particulate NO3 as 24-h mean concentration values have been carried out at a clean air station. The station is situated on the Swedish west coast 40 km south of Gothenburg. Measurements from November 1981 to October 1982 are presented. NO2 was measured with the Saltzman method after removal of ozone and PAN with a gas chromatographic method. HNO3 was sampled in a denuder and particulate NO3 was sampled on an impregnated filter behind the denuder. The denuder and filter were then analysed by ion chromatography. Episodes of high concentrations occurred several times during the year. On these occasions the air was transported over a long range from the continent. 72-h back trajectories are available for this station at 6-h intervals during the whole period of measurements. Monthly mean concentrations of these four species, together with data on SO2 and particulate sulphate are presented. Analysis of the data as a function of the direction of the back trajectory and correlations between nitrogen and sulphate compounds are also given.

References (0)

Cited by (0)

View full text