guidance of FOCUS degradation kinetics - pfmodels

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Guidance <strong>FOCUS</strong> Degradation Kinetics • 4 th example: Compound absorbing weakly to sediment Step 1a Step 1b • DegT50 in wc: ∞ 26.1 d • in sed: 1.8 4.3 d
Guidance <strong>FOCUS</strong> Degradation Kinetics • Step 1a not acceptable (based on former work), so, take step 1b • So, proposed fitting method alone seems not robust • Possible reason: 4 parameters to be fitted at the same time, several solutions possible ?
Page 1 and 2: Water-sed. studies for step 3 FOCUS
Page 3 and 4: Introduction • When are degradati
Page 5 and 6: Introduction
Page 7 and 8: Introduction • Degradation rates:
Page 9 and 10: Guidance FOCUS Degradation Kinetics
Page 11: Guidance FOCUS Degradation Kinetics
Page 15 and 16: Examples • Compound 4, K oc,soil
Page 17 and 18: Examples • Compound 3, K oc,soil
Page 19 and 20: Examples • Results level P-II and
Page 21 and 22: Demonstration fitting with TOXSWA
Page 23 and 24: Fitting with TOXSWA • Disadvantag
Page 25 and 26: Fitting with TOXSWA • At present:
Page 27 and 28: Two runs to optimise
Page 29 and 30: Parameterise substance (ca 8 values
Page 31 and 32: Run PEST coupled to TOXSWA • Para

guidance of FOCUS degradation kinetics - pfmodels

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