Availability of Cedrus atlantica annual rings in monitoring the change in airborne sulfur pollution

Heavy metals are one of the components that threaten human health and ecosystem most among air pollution, which has become a global problem. Sulfur, an important pollutant, is not only serious threat to at high concentrations, but also extremely dangerous for constitutes significant part pollutant load in many cities. Therefore, monitoring change sulfur pollution very important. In this study, usability Cedrus atlantica annual rings was investigated observing air. Within scope samples taken from tree grown Düzce, Europe's 5 polluted cities, were analyzed, concentration past present investigated. As result highest concentrations obtained outer bark north direction. addition, it been found there substantial increase recent years.