Table 2.
Results of the analysis of different environmental water samples using the developed LLME-UHPLC-QqQ-MS/MS method
| Sample | Analyte concentration ± confidence interval (ng/L)a | ||||||
|---|---|---|---|---|---|---|---|
| DEP | DAP | DPP | BBP | DBP | DCHP | DEHP | |
| TWW1 | 122.6 ± 0.8 | n.d. | n.d. | n.d. | 619.9 ± 0.4 | n.d. | < LOQ |
| TWW2 | < LOQ | n.d. | n.d. | n.d. | < LOQ | n.d. | < LOQ |
| TWW3 | < LOQ | n.d. | n.d. | n.d. | < LOQ | n.d. | < LOQ |
| TWW4 | 130.1 ± 0.8 | n.d. | n.d. | < LOQ | 674.9 ± 0.4 | < LOQ | < LOQ |
| TWW5 | 387.1 ± 0.7 | n.d. | n.d. | n.d. | 2692.4 ± 0.4 | n.d. | < LOQ |
| TWW6 | 127.1 ± 0.8 | n.d. | n.d. | n.d. | < LOQ | < LOQ | 3414 ± 1 |
| RW1 | < LOQ | n.d. | n.d. | n.d. | < LOQ | < LOQ | < LOQ |
| RW2 | < LOQ | n.d. | n.d. | n.d. | 105.2 ± 0.3 | < LOQ | < LOQ |
| RW3 | < LOQ | n.d. | n.d. | < LOQ | 1156.7 ± 0.3 | < LOQ | < LOQ |
| RW4 | < LOQ | n.d. | n.d. | n.d. | 938.1 ± 0.3 | n.d. | < LOQ |
| RW5 | < LOQ | n.d. | n.d. | < LOQ | 304.6 ± 0.3 | < LOQ | 142.0 ± 0.7 |
| PW1 | < LOQ | n.d. | n.d. | < LOQ | 811.7 ± 0.3 | 207.4 ± 0.4 | 229.6 ± 0.6 |
| PW2 | 263.9 ± 0.7 | 152.6 ± 0.3 | 143.0 ± 0.5 | 116.1 ± 0.4 | 1974.4 ± 0.3 | 211.2 ± 0.4 | < LOQ |
| PW3 | < LOQ | n.d. | n.d. | n.d. | n.d. | n.d. | 1083.0 ± 0.6 |
| PW4 | 177.6 ± 0.8 | n.d. | n.d. | n.d. | 1227.7 ± 0.3 | 211.3 ± 0.4 | < LOQ |
| PW5 | 1536.5 ± 0.7 | 151.1 ± 0.3 | n.d. | < LOQ | 1736.2 ± 0.3 | 206.4 ± 0.4 | < LOQ |
| PW6 | 358.0 ± 0.7 | n.d. | n.d. | 120.0 ± 0.4 | 1035.8 ± 0.3 | 215.4 ± 0.4 | < LOQ |
| PW7 | 1539.6 ± 0.7 | 153.8 ± 0.3 | n.d. | 111.0 ± 0.4 | 660.6 ± 0.3 | 213.9 ± 0.4 | < LOQ |
n.d., not detected. TWW1–TWW6: treated wastewater samples. RW1, RW3–5: rainwater runoff samples; RW2: underground gallery runoff sample. PW1: metallic tank pond water sample; PW2 and PW6: plastic tank pond water samples; PW3 and PW5: open-cement tank pond water samples; PW4: close-cement tank pond water sample. aResults obtained as an average of three analyses for each sample