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<title>PEC_sw_sed. pfm 0.3-8</title>
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Johannes Ranke
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<h1>Calculate predicted environmental concentrations in sediment from surface
water concentrations</h1>
<div class="row">
<div class="span8">
<h2>Usage</h2>
<pre><span class="functioncall"><a href='PEC_sw_sed.html'>PEC_sw_sed</a></span><span class="keyword">(</span><span class="symbol">PEC_sw</span><span class="keyword">,</span> <span class="argument">percentage</span> <span class="argument">=</span> <span class="number">100</span><span class="keyword">,</span> <span class="argument">method</span> <span class="argument">=</span> <span class="string">"percentage"</span><span class="keyword">,</span>
<span class="argument">sediment_depth</span> <span class="argument">=</span> <span class="number">5</span><span class="keyword">,</span> <span class="argument">water_depth</span> <span class="argument">=</span> <span class="number">30</span><span class="keyword">,</span> <span class="argument">sediment_density</span> <span class="argument">=</span> <span class="number">1.3</span><span class="keyword">,</span>
<span class="argument">PEC_sed_units</span> <span class="argument">=</span> <span class="functioncall"><a href='http://www.rdocumentation.org/packages/base/topics/c'>c</a></span><span class="keyword">(</span><span class="string">"µg/kg"</span><span class="keyword">,</span> <span class="string">"mg/kg"</span><span class="keyword">)</span><span class="keyword">)</span></pre>
<h2>Arguments</h2>
<dl>
<dt>PEC_sw</dt>
<dd>Numeric vector or matrix of surface water concentrations in µg/L for
which the corresponding sediment concentration is to be estimated</dd>
<dt>percentage</dt>
<dd>The percentage in sediment, used for the percentage method</dd>
<dt>method</dt>
<dd>The method used for the calculation</dd>
<dt>sediment_depth</dt>
<dd>Depth of the sediment layer</dd>
<dt>water_depth</dt>
<dd>Depth of the water body in cm</dd>
<dt>sediment_density</dt>
<dd>The density of the sediment in L/kg (equivalent to
g/cm3)</dd>
<dt>PEC_sed_units</dt>
<dd>The units of the estimated sediment PEC value</dd>
</dl>
<div class="Value">
<h2>Value</h2>
<p><dl>
The predicted concentration in sediment
</dl></p>
</div>
<div class="Description">
<h2>Description</h2>
<p>The method 'percentage' is equivalent to what is used in the CRD spreadsheet
PEC calculator</p>
</div>
<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'><span class="functioncall"><a href='PEC_sw_sed.html'>PEC_sw_sed</a></span><span class="keyword">(</span><span class="functioncall"><a href='PEC_sw_drift.html'>PEC_sw_drift</a></span><span class="keyword">(</span><span class="number">100</span><span class="keyword">,</span> <span class="argument">distances</span> <span class="argument">=</span> <span class="number">1</span><span class="keyword">)</span><span class="keyword">,</span> <span class="argument">percentage</span> <span class="argument">=</span> <span class="number">50</span><span class="keyword">)</span></div>
<div class='output'> 1 m
2.130769
</div></pre>
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<h2>Author</h2>
Johannes Ranke
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