Table 4.
Estimated concentrations of reaction products (ng m−3) from the acidic photooxidation experiments (acidic seed [H+] = 275 nmol m−3 air; Lewandowski et al., 2015).
| RH 8 (%) | RH 18 (%) | RH 28 (%) | RH 44 (%) | |
|---|---|---|---|---|
| GC-MS data1 | ||||
| 2-Methylglyceric acid | 3070 | 2136 | 982 | 473 |
| 2-Methyltetrols | 5357 | 4767 | 1029 | 341 |
| 2-Methylglyceric acid dimer | 90 | 144 | 102 | 43 |
| IEPOX-1 | 1 | 13 | 6 | 0 |
| IEPOX-2 | 10 | 3 | 0 | 0 |
| C5-Diol-1 | 53 | 0 | 0 | 0 |
|
LC-MS data 2 | ||||
| m/z [M–H]− | ||||
| 197 | 0.88 | 0.30 | 0.21 | 0.10 |
| 199 | 3.44 | 1.49 | 2.62 | 1.12 |
| 211 | 1.78 | 0.50 | 0.76 | 0.48 |
| 213 | 5.41 | 1.94 | 3.40 | 1.96 |
| 215 | 59.00 | 18.40 | 12.30 | 3.23 |
| 229 | 0.41 | 0.31 | 0.39 | 0.27 |
| 244 | 4.50 | 1.16 | 0.72 | 0.42 |
| 260 | 0.92 | 0.88 | 0.45 | 0.29 |
| 274 | 0.60 | 0.58 | 0.36 | 0.12 |
1
MW as BSTFA derivative.
2
Chromatographic responses of selected main organosulfates (104).