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<img src="" class="logo" alt=""><h1>Calculate predicted environmental concentrations in sediment from surface
water concentrations</h1>
<small class="dont-index">Source: <a href="https://github.com/jranke/pfm/blob/HEAD/R/PEC_sw_sed.R" class="external-link"><code>R/PEC_sw_sed.R</code></a></small>
<div class="d-none name"><code>PEC_sw_sed.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>The method 'percentage' is equivalent to what is used in the CRD spreadsheet
PEC calculator</p>
</div>
<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_sw_sed</span><span class="op">(</span></span>
<span> <span class="va">PEC_sw</span>,</span>
<span> percentage <span class="op">=</span> <span class="fl">100</span>,</span>
<span> method <span class="op">=</span> <span class="st">"percentage"</span>,</span>
<span> sediment_depth <span class="op">=</span> <span class="fl">5</span>,</span>
<span> water_depth <span class="op">=</span> <span class="fl">30</span>,</span>
<span> sediment_density <span class="op">=</span> <span class="fl">1.3</span>,</span>
<span> PEC_sed_units <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"µg/kg"</span>, <span class="st">"mg/kg"</span><span class="op">)</span></span>
<span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt>PEC_sw</dt>
<dd><p>Numeric vector or matrix of surface water concentrations in µg/L for
which the corresponding sediment concentration is to be estimated</p></dd>
<dt>percentage</dt>
<dd><p>The percentage in sediment, used for the percentage method</p></dd>
<dt>method</dt>
<dd><p>The method used for the calculation</p></dd>
<dt>sediment_depth</dt>
<dd><p>Depth of the sediment layer</p></dd>
<dt>water_depth</dt>
<dd><p>Depth of the water body in cm</p></dd>
<dt>sediment_density</dt>
<dd><p>The density of the sediment in L/kg (equivalent to
g/cm3)</p></dd>
<dt>PEC_sed_units</dt>
<dd><p>The units of the estimated sediment PEC value</p></dd>
</dl></div>
<div class="section level2">
<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
<p>The predicted concentration in sediment</p>
</div>
<div class="section level2">
<h2 id="author">Author<a class="anchor" aria-label="anchor" href="#author"></a></h2>
<p>Johannes Ranke</p>
</div>
<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_sw_sed</span><span class="op">(</span><span class="fu"><a href="PEC_sw_drift.html">PEC_sw_drift</a></span><span class="op">(</span><span class="fl">100</span>, distances <span class="op">=</span> <span class="fl">1</span><span class="op">)</span>, percentage <span class="op">=</span> <span class="fl">50</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#></span> 1 m </span>
<span class="r-out co"><span class="r-pr">#></span> 2.130769 </span>
</code></pre></div>
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