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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Spatiotemporal variations of tropospheric ozone concentrations in the Warsaw Agglomeration (Poland)

100%
Rozbicka K., Rozbicki T.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2014
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tom 46
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nr 3
The study uses ozone concentrations from stations in Warsaw Agglomeration and its vicinity. Diversity of localizations of considered station, in terms of type of emissivity, allows on comparison of air pollution conditions by ozone in Warsaw area. Concentration of ozone in summer and spring were above twice greater than the concentration in autumn and winter. The greatest differences between weekend days concentration and work days concentration occur during autumn and winter, but in the same time the differences during the day are the least, especially in urban site stations. Statistics analysis shows strong relationship between ozone concentration and nitrogen dioxide concentration and meteorological elements especially for days with high level of ozone concentration. For these days regression equations were statistically signifi cant (α = 1%) and correlation coeffi cients were greater than 0.81. Polynomial of IV power is the best fitted function of one-hourly values of ozone concentration course in particular seasons.
2

Physiological reaction of tobacco plants to ambient air pollution with tropospheric ozone - preliminary studies

72%
Borowiak K., Drzewiecka K., Golinski P., Zbierska J.
Electronic Journal of Polish Agricultural Universities. Series Environmental Development
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2007
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tom 10
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nr 1
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Analyses of effectiveness of action cascade ozone generator

72%
Hurynovich A. D., Romanovski V. I., Wawrzeniuk P.
Ekonomia i Środowisko
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2013
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nr 1[44]
W artykule przedstawiono główne obszary zastosowania ozonu do oczyszczania wody., oraz podstawowe parametry dezynfekcji wody. Dane doświadczalne dotyczące rozpuszczalności ozonu w wodzie za pomocą kaskadowego turboozonator, w zależności od stężenia ozonu w fazie gazowej, przepływu mieszaniny gazu i czasu trwania dezynfekcji.
4

Biochemical markers of tropospheric ozone: experimentation with test-plants

72%
Borowiak K., Rucinska-Sobkowiak R., Rymer K., Gwozdz E. A., Zbierska J.
Polish Journal of Ecology
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2009
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tom 57
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nr 1
3-14
The present study investigated the potential role of selected antioxidant enzymes: superoxide dismutase (SOD) and peroxidase (POX) as biochemical markers of the impact of tropospheric ozone. Experiments were carried out in ambient air conditions with two tobacco cultivars: Bel W3 and Bel B, which are sensitive and resistant to ozone, respectively. In this study, the degree of leaf injury of the sensitive cultivar was used as an indicator of the ozone level in correlation to the enzyme activity of both tobacco cultivars. In spite of low levels of tropospheric ozone during experimental season, the increase of antioxidant enzyme (SOD and POX) activity concomitant with the increase of ozone concentration was noticed in the sensitive cultivar as well as in the resistant one. This observation is especially important for the resistant tobacco, which does not exhibit any visual effects of ozone influence. Our results could be extrapolated to other plant species (i.e. Poaceae, Fabaceae, Solanaceae, Betulaceae, Salicaceae, Pinaceae), which do not reveal visible lesions in response to ozone stress.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Ozone concentration in ground-level air layer in north-western Poland - The role of meteorological elements

72%
Kalbarczyk R., Kalbarczyk E.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2009
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tom 41
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nr 1
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Ozone effects on trees, where uptake and detoxification meet

72%
De T. L., Vandermeiren K., D'Haese D., Bortier K., Asard H., Ceulemans R.
Dendrobiology
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2002
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tom 47
Ozone is the most important air pollutant and its concentration in ambient air is still rising. Ozone concentrations measured at reference height (50 m is EMEP ozone modelling height), do not reflect the real concentration at the top of the vegetative canopy and do not provide sufficient information about the ozone fluxentering the leaves. Modelling stomatal conductance is leading to estimations of cumulative ozone uptake and enables much better to evaluate the impact of ozone on trees. The negative impact of ozone exposure has a measurable effect on physiological processes such as stomatal conductance, photosynthesis and respiration. Disturbance of the basic physiological processes is leading to growth and wood production losses. There have been several attempts to establish critical levels (CL) for ozone effects on forest trees. Average concentrations and cumulative exposure indices are satisfactory to some extent, but do not fully describe the potential impact of ozone exposure. Much more promising is an evaluation based on the effective ozone flux, which is a function of the absorbed ozone flux and the defensive response. Ozone uptake takes place primarily through the stomata and reactions of ozone with hydrocarbons released by the plant cells and transformations of dissolved ozone in the apoplastic fluid create many reactive oxygen species of which free radicals are able to initiate membrane lipid peroxidation and destruction of cell membranes. The defence of a plant against absorbed ozone starts in the apoplastic fluid. Ascorbate is believed to be a very important radical scavenger avoiding detrimental effects of reactive oxygen species to the membranes. Other important antioxidants are phenolics. The defensive response can be linked to the abundance of ascorbate or the ability of the plants to regenerate (reduce) ascorbate from monodehydroascorbate and dehydroascorbate. The reduction of dehydroascorbate takes place in the symplast where ascorbate can be transported back through the plasma membrane into the apoplast. Ozone exposure also causes oxidative stress of the plant cell interior by the formation of reactive oxygen species. Plants can cope with those toxic substances in the symplast by using antioxidants such as ascorbate, -tocopherol, glutathione and carotenoids and enzymes such as superoxide dismutases, catalases and several peroxidases. The complexity of the apoplastic and symplastic antioxidative capacity with different turnover rates and transport of antioxidants makes it difficult to determine the total antioxidative power.
7

Effect of two different ambient ozone concentrations on antioxidative enzymes in leaves of two tobacco cultivars with contrasting ozone sensitivity

58%
Bandurska H., Borowiak K., Miara M.
Acta Biologica Cracoviensia. Series Botanica
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2009
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tom 51
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nr 2
37-44
Eight-week-old tobacco (Nicotiana tabacum L.) Bel W3 (ozone sensitive) and Bel B (ozone resistant) cultivars were exposed to ozone for two weeks at two sites with differing tropospheric ozone levels in five independent series from May 27 to July 25, 2004. After each exposition, the degree of ozone-caused visible leaf damage and the activity of APX, GuPX, and SOD were examined. Visible leaf damage was observed only in the sensitive cultivar; the resistant one did not exhibit any external symptoms. Three-way ANOVA revealed that the activity of all enzymes varied by exposure site, series and cultivar effects. Significant correlations between GuPX activity in the two cultivars and with the degree of leaf damage to the sensitive cultivar were found. This indicates that GuPX activity in the sensitive as well as in the resistant cultivars track changes in tropospheric ozone levels. The positive correlation between ozone level and APX activity in the resistant cv. Bel B, which did not reveal visible symptoms, indicates that this enzyme may contribute to detoxication of H2O2 and alleviation of oxidative damage caused by O3
8

Relations between circulation and summer ozone concentration at different European locations

58%
Godlowska J., Tomaszewska A. M.
Wiadomości Meteorologii, Hydrologii, Gospodarki Wodnej
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2010
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tom 04
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nr 1-4
9

Czasowy rozkład stężeń ozonu niskotroposferycznego w Szczecinie w latach 2005-2007

58%
Nidzgorska-Lencewicz J.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2011
|
tom 10
|
nr 1
Podstawę opracowania stanowiły wyniki automatycznych, cogodzinnych pomiarów stężeń ozonu niskotroposferycznego pochodzące ze stacji imisyjnej WIOŚ, zlokalizowanej w Szczecinie przy ul. Andrzejewskiego. Stwierdzono, że w okresie badań obejmującym lata 2005–2007 największymi przeciętnymi stężeniami ozonu charakteryzowała się kalendarzowa wiosna, a najmniejszymi kalendarzowa jesień i zima. W ujęciu tygodniowym wykazano przewagę poziomu imisji weekendowej nad pozostałymi dniami tygodnia najsilniej zaznaczającą się w porze wiosennej. W przebiegu dobowym ozonu, zwłaszcza podczas wiosny i lata, występował wyraźny wzrost stężeń rozpoczynający się w godzinach rannych, z maksimum przypadającym na godziny od 15.00 do 18.00 (wg czasu UTC).
10

Effect of increased ozone concentration in the air on the level of some immunological indices in rats given vitamin E and vitamin C

58%
Jedlinska-Krakowska M., Jakubowski K., Kowalski A.
Acta Poloniae Toxicologica
|
2002
|
tom 10
|
nr 1
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