Table 1. Modeled Kinetics of Precursor Biosorption and PFHxS Formation in a Water–Sediment Slurrya.
| PFHxSAmS | PFHxSAm | FHxSA | ||
|---|---|---|---|---|
| kbio | ||||
| rate constant [day–1] | 19 °C | –2.7 (−1.2 to −4.2) | –4.9 (−3.4 to −6.4) | –0.2 (−0.04 to −0.4) |
| 29 °C | –5.0 (−3.7 to −6.4) | –3.7 (−2.4 to −5.0) | –0.7 (−0.2 to −1.4) | |
| half-life [day] | 19 °C | 0.3 (0.2–0.6) | 0.1 (0.1–0.2) | 3.5 (1.7–17) |
| 29 °C | 0.1 (0.1–0.2) | 0.2 (0.1–0.3) | 1.0 (0.5–3.5) | |
| kcontrol | ||||
| rate constant [day–1] | 19 °C | –0.4 (−0.3 to −0.4) | –1.3 (−0.7 to −2.0) | –0.1 (−0.1 to −0.2) |
| 29 °C | –1.6 (−1.2 to −2.0) | –1.4 (−0.8 to −2.0) | –0.3 (−0.1 to −0.6) | |
| half-life [day] | 19 °C | 1.7 (1.7–2.3) | 0.5 (0.3–1.0) | 6.9 (3.5–6.9) |
| 29 °C | 0.4 (0.3–0.6) | 0.5 (0.3–0.9) | 2.3 (1.2–6.9) | |
| kPFHxS | ||||
| rate constant [nM day–1] | 19 °C | 6 (1–12) 10–3 | 6 (1–11) 10–3 | 3 (2–4) 10–2 |
| 29 °C | 9 (3–14) 10–3 | 9 (4–16) 10–3 | 8 (6–9) 10–2 | |
| activation energy [kJ mol–1] | 24 (−63–120) | 31 (−51–120) | 73 (49–98) | |
a
Results show the expected mean and the 90th confidence interval in parentheses.