Direct Analysis of Low-Volatile Molecular Marker Extract from Airborne Particulate Matter Using Sensitivity Correction Method

Table 1

Selected ions measured by SIM mode.

Time (min)	Selected /
0.0–18.0	Solvent delay
18.0–23.0	85, 99, 152, 178
23.0–29.0	85, 99, 101, 202
29.0–35.0	66, 82, 85, 99, 114, 228
35.0–36.0	85, 99, 126, 252
36.0–37.2	85, 99, 217, 282, 254, 255, 357, 372
37.2–40.4	66, 82, 85, 99, 149, 177, 191
40.4–46.0	85, 99, 138, 139, 149, 177, 191, 276, 278
46.0–51.1	85, 99, 150, 300

Fragment ions of -alkanes. Molecular and fragment ions from standard chemicals that were not targeted but were contained in the standard mixture. Fragment ions of C₂₄d₅₀ and C₃₀d₆₂ internal standards. M⁺ and M²⁺ ions of benzo[a]pyrene. M⁺ and its isotopic ions of benzo[a]pyrene-d₂ internal standard. Fragment ions of trisnorhopane, norneohopane, α,β-hopane, and β,α-hopane. M⁺ and M²⁺ ions of benzo[ghi]perylene and indeno[1,2,3-cd]pyrene. M⁺ and M²⁺ ions of dibenz[]anthracene. M⁺ and M²⁺ ions of coronene.