Atmospheric light air ion concentrations and related meteorologic factors in Rezekne city, Latvia.
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Date
2012-04
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Abstract
The well-minded impact of light negative air ions on human organism is still under discussion. The measurements
of air ions are not widespread in Latvia yet. The paper presents new results of air pollution evaluation in
Rezekne city. Measurements of positive and negative air ion concentrations in Rezekne city were taken
during the spring, summer and autumn 2009 and during the winter 2010. Measurements were taken by
portative air ions counter “Sapfir-3M” in eight different points of Rezekne city thrice a day. The concentrations
of positive and negative air ions with mobility factor k ³ 0.4 cm2 V-1 s-1 were measured. Temperature, relative
humidity, wind velocity, direction, etc., were also taken into account. The approximate interconnection
between ionization and chemical and mechanical air pollution in relation with meteorological conditions was
analyzed. The highest level of air ion concentration was observed in mornings, whereas in afternoons this
concentration level decreased due to the growth of anthropogenic air pollution in the city, as light air ions,
because of their charge, promoted the coagulation and the settlement of pollution particles. This regularity is
typical for summer, whereas in spring, autumn and winter it is not characteristic. The unipolarity factor was
usually less than 1 in mornings, but usually larger than 1 in afternoons especially in the most polluted city
areas where minor concentration of air ions was detected. The ionization level is an original indicator of
energetic saturation and aerosol pollution of atmospheric air.
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Keywords
Air ions, Air quality, Air pollution, Air ionization
Citation
Skromulis Andris, Noviks Gotfrids. Atmospheric light air ion concentrations and related meteorologic factors in Rezekne city, Latvia. Journal of Environmental Biology. 2012 Apr; 33(2suppl): 455-462.