Ozone concentration variations near high-voltage transmission lines

Abstract

Changes and distribution of ozone concentration in the area of high-voltage transmission lines were investigated. The investigation on ozone concentration changes was performed with application of two methods: by using an ozone analyser and by passive samplers. The role of an accumulating element was performed by a glass-fiber filter installed in a passive sampler. It was impregnated with a 1.2-di(4-pyridyl)ethylene and acetate acid solution. The impact of meteorological parameters on the passive sampler efficiency and ozone concentration variation is discussed. These parameters can increase or decrease the real concentration value in comparison with the concentration obtained by colocated continuously running ozone analyser. Ozone concentration near high-voltage lines varied from 10 to 51 ppb, and "background" ozone concentration changed from 3 to 50 ppb during the investigation period. The average concentrations were 28.1 and 27.5 ppb near the lines and "background" during the whole experiment period. The wind direction from "background" location to the high-voltage lines prevailed during the experiment. The obtained results by different methods demonstrated good agreement; the difference between ozone concentrations was from 1 to 24% for individual cases.