Table 4.
UHPLC-QTOF instrument and method performance parameter and BPA sulphate concentration in wastewater
| Analyte | IS | Linearity Range [μg L−1] |
R 2 | Accuracy1 [%] |
Precision1 [%] |
IDL [μg L−1] |
IQL [μg L−1] |
Wastewater (influent) Method recovery [%]** |
MDL [ng L−1] |
MQL [ng L−1] |
Average concentration in wastewater [ng L−1]*** |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bisphenol A sulphate | 4-chloro-3-methylphenol-d2 | 1.4–103.4 | 0.9972 | 98.3 | 2.1 | 0.4 | 1.4 | 63.7 ± 6.3 | 0.02 | 0.06 | 2663.9 ± 422 |
*Concentration levels: 0.1, 5 and 100 ng/mL used for precision and accuracy; **Based on duplicate extractions at two concentration levels; ***Based on wastewater samples collected over 7 days