Calculate initial predicted environmental concentrations in surface water due to drainage using the UK method

Source: R/PEC_sw_drainage_UK.R

This implements the method specified in the UK data requirements handbook and was checked against the spreadsheet published on the CRC website

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

Value

The predicted concentration in surface water in µg/L

Examples

PEC_sw_drainage_UK(150, Koc = 100)
#> [1] 8.076923