FOMC.solution. mkin 0.9.44.9000

Usage

FOMC.solution(t, parent.0, alpha, beta)

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Arguments

t: Time.
parent.0: Starting value for the response variable at time zero.
alpha: - Shape parameter determined by coefficient of variation of rate constant - values.
beta: - Location parameter. -

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Description

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Function describing exponential decline from a defined starting value, with - a decreasing rate constant.

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The form given here differs slightly from the original reference by Gustafson - and Holden (1990). The parameter beta corresponds to 1/beta in the - original equation.

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Note

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The solution of the FOMC kinetic model reduces to the - SFO.solution for large values of alpha and - beta with - $k = beta/alpha$.

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Value

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- The value of the response variable at time t. -

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References

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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

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Gustafson DI and Holden LR (1990) Nonlinear pesticide dissipation in soil: A - new model based on spatial variability. Environmental Science and - Technology 24, 1032-1038

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Examples

  plot(function(x) FOMC.solution(x, 100, 10, 2), 0, 2, ylim = c(0, 100))
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