Table 2.
Calibration curve equations, linear ranges, detection limits, and precision of the MOF-polymer-monolithic-column-based SPME coupled to UHPLC-MS/MS as a detection method for extraction and assessment of SAs from aqueous solution at pH = 5 (n = 5).
| Analytes | Regression Equation | R2 | Linear Range (µg/L) |
LOD a (ng/L) |
LOQ a (ng/L) |
RSD b (%) |
|---|---|---|---|---|---|---|
| SDZ | y = 0.2911x − 0.000883 | 0.9998 | 0.015–25.0 | 4.7 | 14.2 | 4.7 |
| STZ | y = 0.3201x + 0.0243 | 0.9954 | 0.015–25.0 | 3.1 | 9.35 | 4.4 |
| SMI | y = 0.3595x + 0.0303 | 0.9989 | 0.015–25.0 | 1.7 | 5.30 | 6.1 |
| SMZ | y = 0.3441x + 0.0207 | 0.9997 | 0.015–25.0 | 2.4 | 7.42 | 4.8 |
| SMM | y = 0.3448x − 0.00505 | 0.9994 | 0.015–25.0 | 3.5 | 10.9 | 4.2 |
| SMX | y = 0.3666x + 0.00663 | 0.9967 | 0.015–25.0 | 1.3 | 4.15 | 3.7 |
| SIZ | y = 0.3617x + 0.0395 | 0.9972 | 0.015–25.0 | 2.3 | 6.96 | 2.2 |
| SDM | y = 0.3137x + 0.0167 | 0.9996 | 0.015–25.0 | 3.8 | 11.7 | 2.1 |
a Detection of limits and quantification of limits were estimated on the basis of 3:1 and 10:1 signal-to-noise ratios, respectively. b Relative standard deviation (RSD) was monitored using 5.0 µg/L sulfonamides mixed solution.