Figure 5. Levels of HM pollution

From

Studying Atmospheric Dust and Heavy Metals on Urban Sites through Synchronous Use of Different Methods

Armen Saghatelyan, Lilit Sahakyan, Olga Belyaeva, Nairuhi Maghakyan

Journal of Atmospheric Pollution. 2014, 2(1), 12-16 doi:10.12691/jap-2-1-3