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The air pollution in many Bulgarian cities is of concern mainly due to high concentration of particulate matter (PM). Poor air quality has adverse health effects and is responsible for premature deaths and life loss. According to the World Health Organization air pollution remains the single largest environmental health risk in Europe. Additionally, negative effects of urban air pollution can be detected on buildings, cultural heritage, vegetation, biodiversity, etc. Air pollutant concentrations in the city depend...

Certain studies have determined specific conifers, which can be found in urban and industrial areas can be used to monitor the degree of air pollution being used for passive biomonitoring processes. The needles and bark of conifers taken from the industrial and urban areas of the Jiu Valley, mercury, chromium) and arsenic, after acid mineralization of the samples of pine bark (Pinus sp.), spruce (Picea Abies) and thuja (Thuja Occidentalis) and those taken from these conifers in the urban area and in the vicinity o...

Accidental explosions and fires caused by combustible dusts dust are some of the most significant threats in many industries where layers of combustible dusts and clouds are formed as a result of technological processes. When there is a possibility of a combustible dust to occur during the process, as a residue or byproduct, safety measures need to be taken in order to protect the installations and personnel. In the process of manufacturing the aluminum packaging a combustible dust residue is formed. In the presen...