The aim of this study was to carry out a review of scientific literature published in Brazil between 2000 and 2009 on the characteristics of air pollutants from different emission sources. especially particulate matter (PM) and its effects on respiratory health. Using electronic databases. a systematic literature review was performed of all research related to air pollutant emissions. https://www.roneverhart.com/Echo-Fix-EF-P2-Spring-Reverb-Pedal-p32083/