Impact of surface contamination on elemental composition of Crataegus sanguinea (Pall.) leavesValentina A. Sagaradze, Elena Y. Babaeva, Yulia V. Zagurskaya and Tatyana I. SiromlyaBIO Web Conf., 38 (2021) 00145DOI: https://doi.org/10.1051/bioconf/20213800145