In the surrounding air, metals and the compounds they form are mainly found as constituents of the particles (particulate matter). The copper pollution of the environmental air, like other heavy metals air pollution, has as source anthropogenic, and also natural sources. In order to perform an assessment of the heavy metals air pollution on health effects, one have to know about the metallic species that are emitted into the environmental air, and/or about the compounds that are involved in the formation of the main metallic components. One of the most important copper air pollution come from dust resulted from the mining activity. Nickel may form a series of compounds that can occur in different oxidation states, but the divalent ions are considered to be of greatest importance whatever inorganic or organic compounds, where they are encountered. The purpose of the present study is to quantify the accumulations of copper and nickel in the foliage of chestnut trees, in the municipality of Cluj-Napoca, in order to quantify the degree of pollution with heavy metals in areas with different vulnerabilities to this type of pollution. The experiment was conducted from April 1, 2019 up to September 30, 2019, in the municipality of Cluj-Napoca. The leaf tissue of the chestnut tree species constituted the biological material taken into account during the experiments. In the field, the observations were made in 4 experimental points. Regarding the accumulation of Cu and Ni in the leaf tissue of the Aesculus hippocastanum L. trees taken in the study, we identified the highest means corresponding to the experimental location no. 4 and minimum corresponding to the chestnut trees located in the experimental location no. 1. The increase of Cu and Ni accumulations is variable, being favored by the climatic factors, in different degrees of intensity, depending on the characteristics of the experimental locations

environment, heavy metals, pollution

environmental engineering

Presentation: oral