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+<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><meta name="description" content="This is a basic calculation of a contaminant concentration in bulk soil
+based on complete, instantaneous mixing. If an interval is given, an
+attempt is made at calculating a long term maximum concentration using
+the concepts layed out in the PPR panel opinion (EFSA PPR panel 2012
+and in the EFSA guidance on PEC soil calculations (EFSA, 2015, 2017)."><title>Calculate predicted environmental concentrations in soil — PEC_soil • pfm</title><script src="../deps/jquery-3.6.0/jquery-3.6.0.min.js"></script><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><link href="../deps/bootstrap-5.2.2/bootstrap.min.css" rel="stylesheet"><script src="../deps/bootstrap-5.2.2/bootstrap.bundle.min.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- bootstrap-toc --><script src="https://cdn.jsdelivr.net/gh/afeld/bootstrap-toc@v1.0.1/dist/bootstrap-toc.min.js" integrity="sha256-4veVQbu7//Lk5TSmc7YV48MxtMy98e26cf5MrgZYnwo=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- search --><script src="https://cdnjs.cloudflare.com/ajax/libs/fuse.js/6.4.6/fuse.js" integrity="sha512-zv6Ywkjyktsohkbp9bb45V6tEMoWhzFzXis+LrMehmJZZSys19Yxf1dopHx7WzIKxr5tK2dVcYmaCk2uqdjF4A==" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/autocomplete.js/0.38.0/autocomplete.jquery.min.js" integrity="sha512-GU9ayf+66Xx2TmpxqJpliWbT5PiGYxpaG8rfnBEk1LL8l1KGkRShhngwdXK1UgqhAzWpZHSiYPc09/NwDQIGyg==" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mark.js/8.11.1/mark.min.js" integrity="sha512-5CYOlHXGh6QpOFA/TeTylKLWfB3ftPsde7AnmhuitiTX4K5SqCLBeKro6sPS8ilsz1Q4NRx3v8Ko2IBiszzdww==" crossorigin="anonymous"></script><!-- pkgdown --><script src="../pkgdown.js"></script><meta property="og:title" content="Calculate predicted environmental concentrations in soil — PEC_soil"><meta property="og:description" content="This is a basic calculation of a contaminant concentration in bulk soil
based on complete, instantaneous mixing. If an interval is given, an
attempt is made at calculating a long term maximum concentration using
the concepts layed out in the PPR panel opinion (EFSA PPR panel 2012
and in the EFSA guidance on PEC soil calculations (EFSA, 2015, 2017)."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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- <h1>Calculate predicted environmental concentrations in soil</h1>
- <div class="hidden name"><code>PEC_soil.Rd</code></div>
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+</nav><div class="container template-reference-topic">
+<div class="row">
+ <main id="main" class="col-md-9"><div class="page-header">
+ <img src="" class="logo" alt=""><h1>Calculate predicted environmental concentrations in soil</h1>
+ <small class="dont-index">Source: <a href="https://github.com/jranke/pfm/blob/HEAD/R/PEC_soil.R" class="external-link"><code>R/PEC_soil.R</code></a></small>
+ <div class="d-none name"><code>PEC_soil.Rd</code></div>
</div>
- <div class="ref-description">
+ <div class="ref-description section level2">
<p>This is a basic calculation of a contaminant concentration in bulk soil
based on complete, instantaneous mixing. If an interval is given, an
attempt is made at calculating a long term maximum concentration using
@@ -51,7 +58,8 @@ the concepts layed out in the PPR panel opinion (EFSA PPR panel 2012
and in the EFSA guidance on PEC soil calculations (EFSA, 2015, 2017).</p>
</div>
- <div id="ref-usage">
+ <div class="section level2">
+ <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">PEC_soil</span><span class="op">(</span></span>
<span> <span class="va">rate</span>,</span>
<span> rate_units <span class="op">=</span> <span class="st">"g/ha"</span>,</span>
@@ -78,8 +86,8 @@ and in the EFSA guidance on PEC soil calculations (EFSA, 2015, 2017).</p>
<span><span class="op">)</span></span></code></pre></div>
</div>
- <div id="arguments">
- <h2>Arguments</h2>
+ <div class="section level2">
+ <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt>rate</dt>
<dd><p>Application rate in units specified below</p></dd>
@@ -195,14 +203,14 @@ soil concentrations? Based on equation (7) given in the PPR panel opinion
p. 13).</p></dd>
</dl></div>
- <div id="value">
- <h2>Value</h2>
+ <div class="section level2">
+ <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
<p>The predicted concentration in soil</p>
</div>
- <div id="details">
- <h2>Details</h2>
+ <div class="section level2">
+ <h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
<p>This assumes that the complete load to soil during the time specified by
'interval' (typically 365 days) is dosed at once. As in the PPR panel
opinion cited below (EFSA PPR panel 2012), only temperature correction using the
@@ -210,8 +218,8 @@ Arrhenius equation is performed.</p>
<p>Total soil and porewater PEC values for the scenarios as defined in the EFSA
guidance (2017, p. 14/15) can easily be calculated.</p>
</div>
- <div id="note">
- <h2>Note</h2>
+ <div class="section level2">
+ <h2 id="note">Note<a class="anchor" aria-label="anchor" href="#note"></a></h2>
<p>While time weighted average (TWA) concentrations given in the examples
from the EFSA guidance from 2015 (p. 80) are be reproduced, this is not
true for the TWA concentrations given for the same example in the EFSA guidance
@@ -227,8 +235,8 @@ from 2017 (p. 92).</p>
(destination 'PECgw') is taken from the chent object, otherwise the DT50
with destination 'PECsoil'.</p>
</div>
- <div id="references">
- <h2>References</h2>
+ <div class="section level2">
+ <h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
<p>EFSA Panel on Plant Protection Products and their Residues (2012)
Scientific Opinion on the science behind the guidance for scenario
selection and scenario parameterisation for predicting environmental
@@ -245,13 +253,13 @@ from 2017 (p. 92).</p>
in soil. <em>EFSA Journal</em> <b>13</b>(4) 4093
doi:10.2903/j.efsa.2015.4093</p>
</div>
- <div id="author">
- <h2>Author</h2>
+ <div class="section level2">
+ <h2 id="author">Author<a class="anchor" aria-label="anchor" href="#author"></a></h2>
<p>Johannes Ranke</p>
</div>
- <div id="ref-examples">
- <h2>Examples</h2>
+ <div class="section level2">
+ <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="fu">PEC_soil</span><span class="op">(</span><span class="fl">100</span>, interception <span class="op">=</span> <span class="fl">0.25</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> scenario</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> t_avg default</span>
@@ -297,26 +305,22 @@ from 2017 (p. 92).</p>
<span class="r-in"><span> Kom <span class="op">=</span> <span class="fl">100</span>, scenarios <span class="op">=</span> <span class="st">"EFSA_2015"</span>, porewater <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
</code></pre></div>
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