| GC–MS conditions | Agilent 8890-5977C with 7693 automatic liquid sampler; DB-1MS column, 30 m × 0.25 mm × 0.25 μm; 40 °C, hold 3 min, 10 °C/min to 280 °C, hold 4 min; inlet 250 °C, split ratio 10:1; 1 μL injection; helium (99.999 %), 1 mL/min; MS transfer line 280 °C; atune; 70 eV electron impact ionization source at 250 °C; quadrupole 150 °C; gain factor 1.0 a.u.; m/z 40–550; threshold 150 counts; A/D samples 2 a.u.; detector off from 4.34 to 4.75 min |
|---|---|
| GC–MS approximate retention time, n-heptane (C₇) | 5.95 min |
| GC–MS approximate retention time, n-octane (C₈) | 7.80 min |
| GC–MS approximate retention time, n-nonane (C₉) | 9.65 min |
| GC–MS approximate retention time, n-decane (C₁₀) | 11.35 min |
| GC–MS approximate retention time, n-undecane (C₁₁) | 12.90 min |
| GC–MS approximate retention time, n-dodecane (C₁₂) | 14.35 min |
| GC–MS approximate retention time, n-tetradecane (C₁₄) | 16.95 min |
| GC–MS approximate retention time, n-hexadecane (C₁₆) | 19.30 min |
| GC–MS approximate retention time, n-octadecane (C₁₈) | 21.40 min |
| GC–MS approximate retention time, n-eicosane (C₂₀) | 23.30 min |
| GC–MS approximate retention time, n-tetracosane (C₂₄) | 26.70 min |
Briana A. Capistran, Edward Sisco, Dennis Leber, Vincent J. Desiderio. “Understanding reporting variability in fire debris data interpretation through an interlaboratory study.” ChemRxiv (). https://doi.org/10.26434/chemrxiv.15007617/v1
The supporting information is appended to the main paper
| GC–MS conditions | Agilent 8890-5977C with 7693 automatic liquid sampler; DB-1MS column, 30 m × 0.25 mm × 0.25 μm; 40 °C, hold 3 min, 10 °C/min to 280 °C, hold 4 min; inlet 250 °C, split ratio 10:1; 1 μL injection; helium (99.999 %), 1 mL/min; MS transfer line 280 °C; atune; 70 eV electron impact ionization source at 250 °C; quadrupole 150 °C; gain factor 1.0 a.u.; m/z 40–550; threshold 150 counts; A/D samples 2 a.u.; detector off from 3.50 to 4.00 min |
|---|---|
| GC–MS approximate retention time, toluene, 10 μg/mL | 6.90 min |
| GC–MS approximate retention time, 2,2,4-trimethylhexane, 15 μg/mL | 7.60 min |
| GC–MS approximate retention time, o-xylene, 10 μg/mL | 9.30 min |
| GC–MS approximate retention time, n-nonane (C₉), 15 μg/mL | 9.65 min |
| GC–MS approximate retention time, m-ethyltoluene, 15 μg/mL | 10.50 min |
| GC–MS approximate retention time, o-ethyltoluene, 15 μg/mL | 10.80 min |
| GC–MS approximate retention time, 1,2,4-trimethylbenzene, 10 μg/mL | 11.05 min |
| GC–MS approximate retention time, indane, 10 μg/mL | 11.70 min |
| GC–MS approximate retention time, 1,2,4,5-tetramethylbenzene, 10 μg/mL | 13.00 min |
| GC–MS approximate retention time, naphthalene, 10 μg/mL | 13.90 min |
| GC–MS approximate retention time, 1-dodecene, 15 μg/mL | 14.20 min |
| GC–MS approximate retention time, n-dodecane (C₁₂), 15 μg/mL | 14.35 min |
| GC–MS approximate retention time, 2-methylnaphthalene, 10 μg/mL | 15.45 min |
| GC–MS approximate retention time, 2-ethylnaphthalene, 15 μg/mL | 16.75 min |
| GC–MS approximate retention time, n-hexadecane (C₁₆), 25 μg/mL | 19.30 min |
| GC–MS approximate retention time, n-octadecane (C₁₈), 25 μg/mL | 21.40 min |
| GC–MS approximate retention time, 2,6,10,14-tetramethylhexadecane, 25 μg/mL | 21.55 min |
| GC–MS approximate retention time, n-eicosane (C₂₀), 25 μg/mL | 23.30 min |
| GC–MS total ion chromatogram | The ignitable liquid compounds eluted at similar retention times as the substrate compounds |
|---|
| GC–MS total ion chromatogram | Dominated by the strong and distinct n-alkane peaks of the lamp oil product, retention time range 17 min to 20 min |
|---|