Table 2. Retention time, MRM parameters, LOQs and LODs of target compounds.
| Compounds | RT(min) | Precursor ion(m/z) | Compouns parameter |
Product ion | LOQ(ng/L) | LOD(ng/L) | EEF | |
|---|---|---|---|---|---|---|---|---|
| Fragmentor (V) | Collision energy (V) | |||||||
| Bisphenol A (BPA) | 1.92 | 227 | 60 | 20/15 | 212*/133 | 11.3 | 3.4 | 3.0 × 10−5 |
| Diethylstilbestrol (DES) | 2.40 | 262 | 60 | 30/30 | 237*/222 | 7.7 | 2.3 | 2.1 × 10−2 |
| Octylphenol (OP) | 4.39 | 205 | 60 | 15 | 106 | 28.0 | 8.4 | 1.2 × 10−3 |
| Nonylphenol (NP) | 4.60 | 219 | 60 | 15 | 106 | 30.7 | 9.2 | 7.0 × 10−4 |
RT: retention time *quantification ion Source parameter: gas temperature: 300 °C, gas flow: 5 L/min, Nebulizer: 45 psi, sheath gas temperature: 250 °C, sheath gas flow: 11 L/min, capillary (negative) 3500 V, nozzle voltage 500 V.