Pollution of potentially toxic metals in urban road dust in Dushanbe (Tajikistan) Khasan Nazriddinzoda, Valery Udachin, Ivan Blinov, Mikhail Shtenberg, Pavel Aminov and Nikolay Udachin E3S Web Conf., 99 (2019) 04004 Published online: 18 June 2019 DOI: 10.1051/e3sconf/20199904004