The concentration of Cu in the topsoil sample from
SP shows the most notable departure from concentrations in other samples. This result is in agreement with results of earlier studies of air pollution monitoring in the Belgrade urban area using both the instrumental and bio monitoring techniques [13,32]. Both studies reported higher Cu concentration in the area of SP than in KP and BG.
It is worth mentioning that the mutuality between air and soil pollution has been noted in other studies: through wet and dry deposition heavy metals are transferred from atmosphere to soil
[33], while heavy metals in topsoil contribute to the corresponding concentrations in the atmosphere