IORE.solution. mkin 0.9.44.9000

Usage

IORE.solution(t, parent.0, k__iore, N)

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Arguments

t: Time.
parent.0: Starting value for the response variable at time zero.
k__iore: Rate constant. Note that this depends on the concentration units used.
N: Exponent describing the nonlinearity of the rate equation

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Description

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

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Note

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The solution of the IORE kinetic model reduces to the - SFO.solution if N = 1. - The parameters of the IORE model can be transformed to equivalent parameters - of the FOMC mode - see the NAFTA guidance for details.

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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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NAFTA Technical Working Group on Pesticides (not dated) Guidance for - Evaluating and Calculating Degradation Kinetics in Environmental - Media

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Examples

  plot(function(x) IORE.solution(x, 100, 0.2, 1.3), 0, 2, 
-	                               ylim = c(0, 100))
-
-
-  fit.fomc <- mkinfit("FOMC", FOCUS_2006_C, quiet = TRUE)
-  fit.iore <- mkinfit("IORE", FOCUS_2006_C, quiet = TRUE)
-  fit.iore.deS <- mkinfit("IORE", FOCUS_2006_C, solution_type = "deSolve", quiet = TRUE)
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-  print(data.frame(coef(fit.fomc), coef(fit.iore), coef(fit.iore.deS), 
-                   row.names = paste("model par", 1:3)))
-
-            coef.fit.fomc. coef.fit.iore. coef.fit.iore.deS.
-model par 1    85.87489063      85.874891          85.874890
-model par 2     0.05192238      -4.826631          -4.826631
-model par 3     0.65096665       1.949403           1.949403
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-  print(rbind(fomc = endpoints(fit.fomc)$distimes, iore = endpoints(fit.iore)$distimes, 
-              iore.deS = endpoints(fit.iore)$distimes))
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-             DT50    DT90 DT50back
-fomc     1.785233 15.1479 4.559973
-iore     1.785233 15.1479 4.559973
-iore.deS 1.785233 15.1479 4.559973
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