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<title>PEC_sw_drainage_UK. pfm 0.3-8</title>
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Johannes Ranke
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<h1>Calculate initial predicted environmental concentrations in surface water due to drainage using the UK method</h1>
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<h2>Usage</h2>
<pre><span class="functioncall"><a href='PEC_sw_drainage_UK.html'>PEC_sw_drainage_UK</a></span><span class="keyword">(</span><span class="symbol">rate</span><span class="keyword">,</span> <span class="argument">interception</span> <span class="argument">=</span> <span class="number">0</span><span class="keyword">,</span> <span class="symbol">Koc</span><span class="keyword">,</span> <span class="argument">latest_application</span> <span class="argument">=</span> NULL<span class="keyword">,</span>
<span class="argument">soil_DT50</span> <span class="argument">=</span> NULL<span class="keyword">,</span> <span class="argument">model</span> <span class="argument">=</span> NULL<span class="keyword">,</span> <span class="argument">model_parms</span> <span class="argument">=</span> NULL<span class="keyword">)</span></pre>
<h2>Arguments</h2>
<dl>
<dt>rate</dt>
<dd>Application rate in g/ha</dd>
<dt>interception</dt>
<dd>The fraction of the application rate that does not reach the soil</dd>
<dt>Koc</dt>
<dd>The sorption coefficient normalised to organic carbon in L/kg</dd>
<dt>latest_application</dt>
<dd>Latest application date, formatted as e.g. "01 July"</dd>
<dt>soil_DT50</dt>
<dd>Soil degradation half-life, if SFO kinetics are to be used</dd>
<dt>model</dt>
<dd>The soil degradation model to be used. Either one of "FOMC",
"DFOP", "HS", or "IORE", or an mkinmod object</dd>
<dt>model_parms</dt>
<dd>A named numeric vector containing the model parameters</dd>
</dl>
<div class="Value">
<h2>Value</h2>
<p><dl>
The predicted concentration in surface water in µg/L
</dl></p>
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<div class="Description">
<h2>Description</h2>
<p>This implements the method specified in the UK data requirements handbook and was checked against the spreadsheet
published on the CRC website</p>
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<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'><span class="functioncall"><a href='PEC_sw_drainage_UK.html'>PEC_sw_drainage_UK</a></span><span class="keyword">(</span><span class="number">150</span><span class="keyword">,</span> <span class="argument">Koc</span> <span class="argument">=</span> <span class="number">100</span><span class="keyword">)</span></div>
<div class='output'>[1] 8.076923
</div></pre>
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<h2>Author</h2>
Johannes Ranke
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