Table 1. Elution of CDEA under Different LC Setting and Related tR Valuesa.
| carbon (n) | name | [M + H]+ | [M – H]− | LC 1 | LC 2 | LC 3 | LC 4 | LC 5 | LC 6 | LC 7 | LC 8 | GC-APCI | LC 1 (spiked in sludge) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | C0DEA | 134.0812 | 132.0666 | 1.30 | 1.32 | 1.10 | 1.51 | 1.41 | 0.84 | 0.88 | 0.94 | 7.75 | 1.48 |
| 1 | C1DEA | 148.0968 | 146.0823 | 1.35 | 1.39 | 1.20 | 1.63 | 1.56 | 1.04 | 1.03 | 1.11 | 7.91 | 1.64 |
| 2 | C2DEA | 162.1125 | 160.0979 | 2.51 | 2.48 | 2.58 | 2.64 | 3.54 | 1.94 | 2.22 | 2.45 | 10.00 | 2.49 |
| 3 | C3DEA | 176.1281 | 174.1136 | 3.39 | 3.38 | 3.12 | 3.35 | 4.26 | 2.55 | 3.12 | 3.33 | 11.24 | 3.36 |
| 4 | C4DEA | 190.1438 | 188.1292 | 4.38 | 4.34 | 4.21 | 4.23 | 5.01 | 3.34 | 4.01 | 4.41 | 11.34 | 4.36 |
| 5 | C5DEA | 204.1594 | 202.1449 | 5.46 | 5.42 | 5.99 | 5.61 | 6.17 | 4.36 | 5.71 | 6.26 | 12.14 | 5.44 |
| 6 | C6DEA | 218.1751 | 216.1605 | 6.68 | 6.79 | 7.31 | 6.97 | 7.77 | 5.56 | 7.61 | 7.99 | 12.31 | 6.78 |
| 7 | C7DEA | 232.1907 | 230.1762 | 8.01 | 8.05 | 8.59 | 8.74 | 9.89 | 6.74 | 9.09 | 9.34 | 15.28 | 7.96 |
| 8 | C8DEA | 246.2064 | 244.1918 | 9.08 | 9.20 | 9.66 | 10.37 | 11.32 | 7.75 | 10.39 | 10.61 | 15.31 | 9.14 |
| 9 | C9DEA | 260.2220 | 258.2075 | 10.12 | 10.16 | 10.68 | 12.12 | 13.05 | 8.81 | 11.66 | 11.89 | 17.76 | 10.14 |
| 10 | C10DEA | 274.2377 | 272.2231 | 10.94 | 11.01 | 11.44 | 13.5 | 14.3 | 9.72 | 12.76 | 12.91 | 19.48 | 11.03 |
| 11 | C11DEA | 288.2533 | 286.2388 | 11.71 | 11.76 | 12.24 | 15.02 | 15.75 | 10.95 | 14.21 | 14.23 | 20.27 | 11.86 |
| 12 | C12DEA | 302.2690 | 300.2544 | 12.36 | 12.41 | 12.73 | 15.97 | 16.63 | 11.58 | 15.11 | 15.16 | 20.31 | 12.39 |
| 13 | C13DEA | 316.2846 | 314.2701 | 12.95 | 12.96 | 13.33 | 17.18 | 17.68 | 12.73 | 16.43 | 16.56 | 20.36 | 12.99 |
| 14 | C14DEA | 330.3003 | 328.2857 | 13.39 | 13.41 | 13.66 | 17.88 | 18.39 | 13.5 | 17.46 | 17.41 | 22.84 | 13.73 |
| 15 | C15DEA | 344.3159 | 342.3014 | 13.86 | 13.79 | 14.09 | 18.81 | 19.19 | 14.56 | 18.81 | 18.66 | 24.46 | 13.86 |
| 16 | C16DEA | 358.3316 | 356.3170 | 14.16 | 14.16 | 14.34 | 19.45 | 19.91 | 15.33 | 19.78 | 19.69 | 26.73 | 14.16 |
| 17 | C17DEA | 372.3472 | 370.3327 | 14.51 | 14.47 | 14.68 | 20.36 | 20.81 | 16.24 | 20.89 | 20.81 | ND | 14.46 |
| 18 | C18DEA | 386.3629 | 384.3483 | 14.74 | 14.74 | 14.96 | 21.26 | 21.87 | 16.96 | 21.93 | 21.66 | ND | 14.74 |
| 19 | C19DEA | 400.3785 | 398.3640 | 14.99 | 14.98 | 15.14 | 22.33 | 23.09 | 17.64 | 22.84 | 22.69 | ND | 15.01 |
| 20 | C20DEA | 414.3942 | 412.3796 | 15.34 | 15.31 | 15.51 | 23.69 | ND | 18.39 | 23.86 | ND | ND | 15.28 |
| 21 | C21DEA | 428.4098 | 426.3953 | 15.51 | 15.45 | 15.69 | 25.35 | ND | 18.97 | 24.79 | ND | ND | 15.56 |
| 22 | C22DEA | 442.4255 | 440.4109 | 15.79 | 15.74 | 16.01 | ND | ND | ND | 25.84 | ND | ND | 15.89 |
| 23 | C23DEA | 456.4411 | 454.4266 | 16.13 | 16.10 | 16.38 | ND | ND | ND | 27.23 | ND | ND | 16.26 |
a
ND: not detected.