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\name{SFORB.solution}
\alias{SFORB.solution}
\title{ Single First-Order Reversible Binding kinetics }
\description{
Function describing the solution of the differential equations describing
the kinetic model with first-order terms for a two-way transfer from a free
to a bound fraction, and a first-order degradation term for the free
fraction. The initial condition is a defined amount in the free fraction and
no substance in the bound fraction.
}
\usage{
SFORB.solution(t, parent.0, k_12, k_21, k_1output)
}
\arguments{
\item{t}{ Time. }
\item{parent.0}{ Starting value for the response variable at time zero. }
\item{k_12}{ Kinetic constant describing transfer from free to bound. }
\item{k_21}{ Kinetic constant describing transfer from bound to free. }
\item{k_1output}{ Kinetic constant describing degradation of the free fraction. }
}
\value{
The value of the response variable, which is the sum of free and bound
fractions at time \code{t}.
}
\references{
FOCUS (2006) \dQuote{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,
\url{http://esdac.jrc.europa.eu/projects/degradation-kinetics}
}
\examples{
\dontrun{plot(function(x) SFORB.solution(x, 100, 0.5, 2, 3), 0, 2)}
}
\keyword{ manip }
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