Editorial photo #4084114 Environmental Issue
Study Of Particulate Matter (PM) In Air Polluting Krakow
An aspirator with polycarbonate membrane filters is used for collecting aerosol samples for observation in an electron microscope, duing a live study of particulate matter (PM) found in air polluting Krakow. The air pollution analytical study is being carried out in Jagiellonian University, Krakow. On Thursday, March 7, 2019, in Krakow, Poland. (Photo by Artur Widak/NurPhoto)