表2.
7种苯系物代谢物及其稳定同位素内标的保留时间和质谱参数
| Analyte | Retention time/min | Ion pairs (m/z) | Declustering potentials/V | Collision energies/eV |
|---|---|---|---|---|
| MU | 4.7 | 141>53*, 141>97, 141>59 | -20, -20, -20 | -16, -12, -15 |
| PMA | 7.7 | 238>109*, 239>110 | -10, -20 | -13, -13 |
| BMA | 7.8 | 252>123*, 253>124 | -20, -20 | -17, -22 |
| HA | 6.6 | 178>160*, 178>133 | -20, -20 | -10, -20 |
| 2MHA | 7.0 | 192>91*, 192>148, 192>174 | -20, -20, -20 | -20, -15, -10 |
| 3MHA & 4MHA | 7.4 | 192>91*, 192>148, 192>174 | -20, -20, -20 | -15, -15, -10 |
| MU-d4 | 4.7 | 145>100 | -10 | -11 |
| PMA-d2 | 7.7 | 240>109 | -20 | -27 |
| BMA-d3 | 7.8 | 255>123 | -20 | -20 |
| HA-d5 | 6.6 | 183>139 | -20 | -17 |
| 2MHA-d7 | 7.0 | 199>155 | -65 | -16 |
| 3MHA-d7 & 4MHA-d7 | 7.3 | 199>155 | -20 | -16 |
3MHA and 4MHA had identical parameters, same with 3MHA-d7 and 4MHA-d7. * Quantitation ion.