Double First-Order in Parallel kinetics

Description

Function describing decline from a defined starting value using the sum of two exponential decline functions.

Usage

1
DFOP.solution(t, parent.0, k1, k2, g)

Arguments

t

Time.

parent.0

Starting value for the response variable at time zero.

k1

First kinetic constant.

k2

Second kinetic constant.

g

Fraction of the starting value declining according to the first kinetic constant.

Value

The value of the response variable at time t.

References

FOCUS (2006) “Guidance Document on Estimating Persistence and Degradation Kinetics from Environmental Fate Studies on Pesticides in EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, EC Document Reference Sanco/10058/2005 version 2.0, 434 pp, http://focus.jrc.ec.europa.eu/dk

Examples

1
  plot(function(x) DFOP.solution(x, 100, 5, 0.5, 0.3), 0, 4, ylim=c(0,100))

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