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Hydrocarbons belong to the compounds most occurring in surface waters and groundwater. The presence of petroleum compounds in such waters brings significant changes to their physicochemical and organoleptic characteristics even at very low concentrations, like 0.01 g/m3. Petroleum compounds significantly affect living organisms. Pollution of these components is dangerous for biological life due to...
Wraz z odkryciem zjawiska fluorescencji, a przede wszystkim obniżeniem kosztów produkcji farb fluorescencyjnych, powszechne stało się wytwarzanie oznaczeń fluorescencyjnych. Plakietki oraz znaki drogowe fluorescencyjne stosowane są w miejscach strategicznych, jeśli chodzi o bezpieczeństwa ludzi. Tego typu znaki stosuje się również do oznaczania dróg ewakuacyjnych. Bardzo ważne jest, aby produkty te...
Research was done to assess the occurrence of bacteria Pseudomonas aeruginosa in public utility surface water and artesian wells in the city area of Cracow (Poland). Samples were collected once in the summer and once in winter 2012 for each of the selected locations. While Pseudomonas aeruginosa was found at two public bathing beaches, it was not found in potable water. The contamination discovered...
The authors present an example of the application of cluster analysis in commodity science. The aim of the analysis was to find, on the ground of chemical composition, groups of mineral and spring waters in which the objects of the same group exhibited the highest possible degree of similarity, while objects of different groups exhibited the lowest. Euclidean distance method was used to calculate the...
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