$chemparam

 idirect   =    2,

 chtrname  =    'SO2','SO4','BC_HB','BC_HL','OC_HB','OC_HL','DUST','DUST','DUST','DUST',

 chtrsol   =  0.20, 0.80, 0.05, 0.80, 0.05, 0.80, 0.50,  0.60,  0.70,  0.80,

 chtrdpv   = 0.00300,0.00200,0.00025,0.00025,0.00025,0.00025,0.00025,0.00050,0.00075,0.00100,0.00800,0.00200,0.00025,0.00250,0.00025,0.00250,0.00025,0.00050,0.00075,0.00100,

 dustbsiz  =  0.01, 1.00, 2.50, 5.00, 1.00, 2.50, 5.00,20.00,

 

Yours,

Libin Yan