pm2.5计算和单位换算

1、pm2.5和pm10的计算

PM10a=PM10 PM25a PM25a=PM25 BC OC SOA1 SOA2 SOA3 SOA4 SOA5 SOA6 ANA ASO4 ANO3 ACL ANH4

或者：

names = (/"A25I","A25J","AECI","AECJ","ANH4I",\       "ANH4J","ANO3I","ANO3J","AORGAI","AORGAJ",\       "AORGBI","AORGBJ","AORGPAI","AORGPAJ",\       "ASO4I","ASO4J","ASOIL","ACORS","ASEAS"/)

2、单位换算

1 ppm=1000ppb

1mg/m3=1000ug/m3

ppb---->>>ug/m3 n*分子量/22.4

ug/m3--->>>ppb n*22.4/分子量