Calculate initial predicted environmental concentrations in surface water due to drainage using the UK method
Source:R/PEC_sw_drainage_UK.R
PEC_sw_drainage_UK.RdThis implements the method specified in the UK data requirements handbook and was checked against the spreadsheet published on the CRC website
Usage
PEC_sw_drainage_UK(
rate,
interception = 0,
Koc,
latest_application = NULL,
soil_DT50 = NULL,
model = NULL,
model_parms = NULL
)Arguments
- rate
Application rate in g/ha
- interception
The fraction of the application rate that does not reach the soil
- Koc
The sorption coefficient normalised to organic carbon in L/kg
- latest_application
Latest application date, formatted as e.g. "01 July"
- soil_DT50
Soil degradation half-life, if SFO kinetics are to be used
- model
The soil degradation model to be used. Either one of "FOMC", "DFOP", "HS", or "IORE", or an mkinmod object
- model_parms
A named numeric vector containing the model parameters
References
HSE's Chemicals Regulation Division (CRD) Active substance PECsw calculations (for UK specific authorisation requests) https://www.hse.gov.uk/pesticides/topics/pesticide-approvals/pesticides-registration/data-requirements-handbook/fate/active-substance-uk.htm accessed 2019-09-27
Drainage PECs Version 1.0 (2015) Spreadsheet published at https://www.hse.gov.uk/pesticides/topics/pesticide-approvals/pesticides-registration/data-requirements-handbook/fate/pec-tools-2015/PEC%20sw-sed%20(drainage).xlsx accessed 2019-09-27