1 1 Chapter 10 PARTICLES IN THE ATMOSPHERE Environmental Chemistry, 9th Edition Stanley E. Manahan Taylor and Francis/CRC Press 2010 !"#$ % &' ! ( &)"% * + &)"%%#, "- )%&%(*". !&+ * # &- ,&)# "# " # /%/%/0%12% 3 2 3 )%0 %### " .( ".((*". ' 4 4( 0(*" ( 1)%43 5 %" • v = settling velocity • g = acceleration of gravity • ρ 1 = particle density • ρ 2 = air density • η 2 = air viscosity , 5." " ! )%6 ! # 6 7 6( ") ( /7%#*8 / # ("( / /9#. /: "(* /,- /+ # /+ "(* % 8 ;( ") "( /7 2#.8 / # /%(% /%( "< # /< 1 3/%% 9 % ) < &3FeS 2 + 8O 2 → Fe 3 O 4 + 6SO 2 "&2SO 2 + O 2 + 2H 2 O → 2H 2 SO 4 &H 2 SO 4 (droplet) + 2NH 3 → (NH 4 ) 2 SO 4 (particulate) %) #13( 10