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<p>Time course of 2,4,5-trichlorophenoxyacetic acid, and the corresponding
2,4,5-trichlorophenol and 2,4,5-trichloroanisole as recovered in diethylether
extracts.</p>
<pre><span class='no'>mccall81_245T</span></pre>
<div class="Format">
<h2>Format</h2>
<p>A dataframe containing the following variables.
<dl class='dl-horizontal'>
<dt><code>name</code></dt><dd>the name of the compound observed. Note that T245 is used as
an acronym for 2,4,5-T. T245 is a legitimate object name
in R, which is necessary for specifying models using
<code>mkinmod</code>.</dd>
<dt><code>time</code></dt><dd>a numeric vector containing sampling times in days after
treatment</dd>
<dt><code>value</code></dt><dd>a numeric vector containing concentrations in percent of applied radioactivity</dd>
<dt><code>soil</code></dt><dd>a factor containing the name of the soil</dd>
</dl></p>
</div>
<div class="Source">
<h2>Source</h2>
<p>McCall P, Vrona SA, Kelley SS (1981) Fate of uniformly carbon-14 ring labeled 2,4,5-Trichlorophenoxyacetic acid and 2,4-dichlorophenoxyacetic acid. J Agric Chem 29, 100-107
<a href = 'http://dx.doi.org/10.1021/jf00103a026'>http://dx.doi.org/10.1021/jf00103a026</a></p>
</div>
<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'> <span class='no'>SFO_SFO_SFO</span> <span class='kw'><-</span> <span class='fu'>mkinmod</span>(<span class='kw'>T245</span> <span class='kw'>=</span> <span class='fu'>list</span>(<span class='kw'>type</span> <span class='kw'>=</span> <span class='st'>"SFO"</span>, <span class='kw'>to</span> <span class='kw'>=</span> <span class='st'>"phenol"</span>),
<span class='kw'>phenol</span> <span class='kw'>=</span> <span class='fu'>list</span>(<span class='kw'>type</span> <span class='kw'>=</span> <span class='st'>"SFO"</span>, <span class='kw'>to</span> <span class='kw'>=</span> <span class='st'>"anisole"</span>),
<span class='kw'>anisole</span> <span class='kw'>=</span> <span class='fu'>list</span>(<span class='kw'>type</span> <span class='kw'>=</span> <span class='st'>"SFO"</span>))</div><div class='output'><strong class='text-info'>Successfully compiled differential equation model from auto-generated C code.</strong></div><div class='input'> <span class='co'>## Not run: ------------------------------------</span>
<span class='co'># fit.1 <- mkinfit(SFO_SFO_SFO, subset(mccall81_245T, soil == "Commerce"))</span>
<span class='co'># summary(fit.1, data = FALSE)</span>
<span class='co'># </span>
<span class='co'>## ---------------------------------------------</span>
<span class='co'># No covariance matrix and k_phenol_sink is really small, therefore fix it to zero</span>
<span class='no'>fit.2</span> <span class='kw'><-</span> <span class='fu'>mkinfit</span>(<span class='no'>SFO_SFO_SFO</span>, <span class='fu'>subset</span>(<span class='no'>mccall81_245T</span>, <span class='no'>soil</span> <span class='kw'>==</span> <span class='st'>"Commerce"</span>),
<span class='kw'>parms.ini</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='kw'>k_phenol_sink</span> <span class='kw'>=</span> <span class='fl'>0</span>),
<span class='kw'>fixed_parms</span> <span class='kw'>=</span> <span class='st'>"k_phenol_sink"</span>, <span class='kw'>quiet</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>)
<span class='fu'>summary</span>(<span class='no'>fit.2</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)</div><div class='output co'>#> mkin version: 0.9.44.9000
#> R version: 3.3.1
#> Date of fit: Thu Oct 6 10:47:34 2016
#> Date of summary: Thu Oct 6 10:47:34 2016
#>
#> Equations:
#> d_T245 = - k_T245_sink * T245 - k_T245_phenol * T245
#> d_phenol = + k_T245_phenol * T245 - k_phenol_sink * phenol -
#> k_phenol_anisole * phenol
#> d_anisole = + k_phenol_anisole * phenol - k_anisole_sink * anisole
#>
#> Model predictions using solution type deSolve
#>
#> Fitted with method Port using 246 model solutions performed in 1.492 s
#>
#> Weighting: none
#>
#> Starting values for parameters to be optimised:
#> value type
#> T245_0 100.9000 state
#> k_T245_sink 0.1000 deparm
#> k_T245_phenol 0.1001 deparm
#> k_phenol_anisole 0.1002 deparm
#> k_anisole_sink 0.1003 deparm
#>
#> Starting values for the transformed parameters actually optimised:
#> value lower upper
#> T245_0 100.900000 -Inf Inf
#> log_k_T245_sink -2.302585 -Inf Inf
#> log_k_T245_phenol -2.301586 -Inf Inf
#> log_k_phenol_anisole -2.300587 -Inf Inf
#> log_k_anisole_sink -2.299590 -Inf Inf
#>
#> Fixed parameter values:
#> value type
#> phenol_0 0 state
#> anisole_0 0 state
#> k_phenol_sink 0 deparm
#>
#> Optimised, transformed parameters with symmetric confidence intervals:
#> Estimate Std. Error Lower Upper
#> T245_0 103.9000 2.35200 98.930 108.8000
#> log_k_T245_sink -4.1130 0.13250 -4.390 -3.8350
#> log_k_T245_phenol -3.6120 0.05002 -3.716 -3.5070
#> log_k_phenol_anisole -0.9037 0.30580 -1.544 -0.2637
#> log_k_anisole_sink -5.0090 0.11180 -5.243 -4.7750
#>
#> Parameter correlation:
#> T245_0 log_k_T245_sink log_k_T245_phenol
#> T245_0 1.00000 0.63761 -0.1742
#> log_k_T245_sink 0.63761 1.00000 -0.3831
#> log_k_T245_phenol -0.17416 -0.38313 1.0000
#> log_k_phenol_anisole -0.05948 0.08745 -0.3047
#> log_k_anisole_sink -0.16208 -0.60469 0.5227
#> log_k_phenol_anisole log_k_anisole_sink
#> T245_0 -0.05948 -0.1621
#> log_k_T245_sink 0.08745 -0.6047
#> log_k_T245_phenol -0.30470 0.5227
#> log_k_phenol_anisole 1.00000 -0.1774
#> log_k_anisole_sink -0.17744 1.0000
#>
#> Residual standard error: 2.706 on 19 degrees of freedom
#>
#> Backtransformed parameters:
#> Confidence intervals for internally transformed parameters are asymmetric.
#> t-test (unrealistically) based on the assumption of normal distribution
#> for estimators of untransformed parameters.
#> Estimate t value Pr(>t) Lower Upper
#> T245_0 1.039e+02 44.160 6.462e-21 98.930000 108.80000
#> k_T245_sink 1.636e-02 7.545 1.978e-07 0.012400 0.02159
#> k_T245_phenol 2.701e-02 19.990 1.607e-14 0.024320 0.02999
#> k_phenol_anisole 4.051e-01 3.270 2.014e-03 0.213600 0.76820
#> k_anisole_sink 6.679e-03 8.942 1.544e-08 0.005285 0.00844
#>
#> Chi2 error levels in percent:
#> err.min n.optim df
#> All data 9.831 5 17
#> T245 7.908 3 5
#> phenol 99.808 1 6
#> anisole 5.379 1 6
#>
#> Resulting formation fractions:
#> ff
#> T245_sink 0.3772
#> T245_phenol 0.6228
#> phenol_anisole 1.0000
#> phenol_sink 0.0000
#> anisole_sink 1.0000
#>
#> Estimated disappearance times:
#> DT50 DT90
#> T245 15.982 53.091
#> phenol 1.711 5.685
#> anisole 103.784 344.763
#> </div></pre>
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