Accumulation of heavy metals in aquatic vegetation of the Barguzin River Valentina G. Shiretorova, Svetlava V. Zhigzhitzhapova, Elena P. Dylenova and Larisa D. Radnaeva E3S Web Conf., 169 (2020) 01018 Published online: 19 May 2020 DOI: 10.1051/e3sconf/202016901018