General utility functions

Functions that are independent of specific fate modelling areas

geomean()

Calculate the geometric mean

one_box()

Create a time series of decline data

plot(<one_box>)

Plot time series of decline data

sawtooth()

Create decline time series for multiple applications

twa()

Calculate a time weighted average concentration

max_twa()

The maximum time weighted average concentration for a moving window

pfm_degradation()

Calculate a time course of relative concentrations based on an mkinmod model

SFO_actual_twa()

Actual and maximum moving window time average concentrations for SFO kinetics

FOMC_actual_twa()

Actual and maximum moving window time average concentrations for FOMC kinetics

Predicted environmental concentrations in soil

PEC_soil()

Calculate predicted environmental concentrations in soil

PEC_soil_mets()

Calculate initial and accumulation PEC soil for a set of metabolites

soil_scenario_data_EFSA_2015

Properties of the predefined scenarios from the EFSA guidance from 2015

soil_scenario_data_EFSA_2017

Properties of the predefined scenarios from the EFSA guidance from 2017

PEC_FOMC_accu_rel()

Get the relative accumulation of an FOMC model over multiples of an interval

Predicted environmental concentrations in groundwater

FOCUS_GW_scenarios_2012

A very small subset of the FOCUS Groundwater scenario definitions

Predicted environmental concentrations in surface water

PEC_sw_drift()

Calculate predicted environmental concentrations in surface water due to drift

drift_data_JKI

Deposition from spray drift expressed as percent of the applied dose as published by the JKI

PEC_sw_drainage_UK()

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

PEC_sw_sed()

Calculate predicted environmental concentrations in sediment from surface water concentrations

chent_focus_sw()

Create a chemical compound object for FOCUS Step 1 calculations

PEC_sw_focus()

Calculate PEC surface water at FOCUS Step 1

FOCUS_Step_12_scenarios

Step 1/2 scenario data as distributed with the FOCUS Step 1/2 calculator

perc_runoff_exposit

Runoff loss percentages as used in Exposit 3

perc_runoff_reduction_exposit

Runoff reduction percentages as used in Exposit

PEC_sw_exposit_runoff()

Calculate PEC surface water due to runoff and erosion as in Exposit 3

TOXSWA_cwa

R6 class for holding TOXSWA water concentration data and associated statistics

read.TOXSWA_cwa()

Read TOXSWA surface water concentrations

plot(<TOXSWA_cwa>)

Plot TOXSWA surface water concentrations

Classifications and indicators

Evaluating environmental fate properties

SSLRC_mobility_classification()

Determine the SSLRC mobility classification for a chemical substance from its Koc

GUS() print(<GUS_result>)

Groundwater ubiquity score based on Gustafson (1989)

Utilities

get_vertex()

Fit a parabola through three points