Air quality and Chemical and morphological characteristics of PM_(2.5) emitted from an open municipal solid waste (MSW) disposal site in India

摘要

1. The higher levels of PM are caused by the dust generated by 1.1 on-site movement of heavy duty vehicles on the dry unpaved roads, 1.2 unloading of waste 1.3 Infrequent spontaneous or deliberate burning of wastes 2. During winter 2.1 SO_4~(2-)＞ NH_4~+＞ NO_3~-＞Cl~- ＞Ca~(2+)＞ K~+ ＞Na~+ ＞Mg~2 3. During Summer 3.1 SO_4~(2-)＞NH_4~+＞Ca~(2+)＞NO_3~- ＞Na~+＞Cl~-＞K~+＞Mg~(2+) 4. Heterogeneous activities at the dumpsite may contribute to the particulate emissions with metals Al, Na, Mg, Si, K, Ca, S, Zn, Fe, Cu and Ti 5. (NH_4)_2SO_4 - Major contributor to visibility impairment 6. The dose proximity of dumpsite and urban settlements make this area a potential air pollution hotspot.