Home – Home – Jornals – Chemistry for Sustainable Development 2021 number 1

The data on the content of 20 elements determined by means of X-ray fluorescence analysis using synchrotron radiation (SRXRF) in the leaves and stems of three Syringa vulgaris cultivars ‘Nadezhda’, ‘Olimpiada Kolesnikova’, ‘Pamyat o Kirove’ growing under the conditions of transport-caused and industrial pollution in Novosibirsk and under background conditions (reference). The concentrations of Mn, Fe, Co, Cr, Br, Rb, Nb in plants increased as a result of the technogenic impact, while the concentrations of Zn and Mo decreased (in comparison with the reference). The plants of ‘Nadezhda’ cultivar were distinguished by the increased content of microelements under urban conditions. As a consequence of environmental pollution, changes in the relations between physiologically essential chemical elements were observed in the leaves and stems of the plants. The smallest changes were detected in the Fe/Mn and Zn/Cu ratios in the plants of ‘Pamyat o Kirove’ cultivar. It was determined that the K/Rb ratio decreased under technogenic load in the plants of ‘Olimpiada Kolesnikova’ and ‘Pamyat o Kirove’ cultivars due to an increase in Rb content in the leaves and stems, while, quite contrary, this ratio increased in ‘Nadezhda’ cultivar with respect to the reference. On the basis of the calculated biogeochemical transformation coefficient, the most significant changes in the microelement composition are recorded for leaves and stems of the ‘Nadezhda’ cultivar, compared to others, which indicates its lower resistance to anthropogenic pollution in comparison with other cultivars. Common lilac plants of ‘Pamyat o Kirove’ cultivar were determined to tolerant to pollution under urban conditions.