Please see this prior issue.
This is the total for CMAQv5.4+, which is likely different that the version that you are using.
!! Total PM Aggregates
ATOTIJ_ONR ,ug m-3 ,ASO4I_ONR[1]+ANO3I_ONR[1]+ANH4I_ONR[1]+ANAI_ONR[1]+ACLI_ONR[1]
+AECI_ONR[1]+AOTHRI_ONR[1] \
+ASO4J_ONR[1]+ANO3J_ONR[1]+ANH4J_ONR[1]+ANAJ_ONR[1]+ACLJ_ONR[1]
+AECJ_ONR[1]+AOMIJ_ONR[0]+AOTHRJ_ONR[1]+AFEJ_ONR[1]+ASIJ_ONR[1]
+ATIJ_ONR[1]+ACAJ_ONR[1]+AMGJ_ONR[1]+AMNJ_ONR[1]+AALJ_ONR[1]+AKJ_ONR[1] here ONR is the tagged species