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It is not clarified when it can be regarded reliable, but the +equation is stated to be produced for non-ionic compounds, suggesting that +the compound should not be ionogenic (weak acid/base) +or ionic." /> + + + + +<!-- 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]> +<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script> +<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> +<![endif]--> + + + + </head> + + <body data-spy="scroll" data-target="#toc"> + <div class="container template-reference-topic"> + <header> + <div class="navbar navbar-default navbar-fixed-top" role="navigation"> + <div class="container"> + <div class="navbar-header"> + <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false"> + <span class="sr-only">Toggle navigation</span> + <span class="icon-bar"></span> + <span class="icon-bar"></span> + <span class="icon-bar"></span> + </button> + <span class="navbar-brand"> + <a class="navbar-link" href="../index.html">pfm</a> + <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.5.7</span> + </span> + </div> + + <div id="navbar" class="navbar-collapse collapse"> + <ul class="nav navbar-nav"> + <li> + <a href="../index.html"> + <span class="fas fa fas fa-home fa-lg"></span> + + </a> +</li> +<li> + <a href="../reference/index.html">Reference</a> +</li> + </ul> + <ul class="nav navbar-nav navbar-right"> + + </ul> + + </div><!--/.nav-collapse --> + </div><!--/.container --> +</div><!--/.navbar --> + + + + </header> + +<div class="row"> + <div class="col-md-9 contents"> + <div class="page-header"> + <h1>Estimation of the transpiration stream concentration factor</h1> + + <div class="hidden name"><code>TSCF.Rd</code></div> + </div> + + <div class="ref-description"> + <p>The FOCUS groundwater guidance (FOCUS 2014, p. 41) states that a reliable measured +log Kow for neutral pH must be available in order to apply the Briggs +equation. It is not clarified when it can be regarded reliable, but the +equation is stated to be produced for non-ionic compounds, suggesting that +the compound should not be ionogenic (weak acid/base) +or ionic.</p> + </div> + + <pre class="usage"><span class='fu'>TSCF</span>(<span class='no'>log_Kow</span>, <span class='kw'>method</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"briggs82"</span>, <span class='st'>"dettenmaier09"</span>))</pre> + + <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2> + <table class="ref-arguments"> + <colgroup><col class="name" /><col class="desc" /></colgroup> + <tr> + <th>log_Kow</th> + <td><p>The decadic logarithm of the octanol-water partition constant</p></td> + </tr> + <tr> + <th>method</th> + <td><p>Short name of the estimation method.</p></td> + </tr> + </table> + + <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2> + + <p>The Dettenmaier equation is given to show that other views on the subject exist.</p> + <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2> + + <p>FOCUS (2014) Generic Guidance for Tier 1 FOCUS Ground Water Assessments. + Version 2.2, May 2014 +Dettenmaier EM, Doucette WJ and Bugbee B (2009) Chemical hydrophobicity and uptake +by plant roots. Environ. Sci. Technol 43, 324 - 329</p> + + <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2> + <pre class="examples"><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/plot.html'>plot</a></span>(<span class='no'>TSCF</span>, -<span class='fl'>1</span>, <span class='fl'>5</span>, <span class='kw'>xlab</span> <span class='kw'>=</span> <span class='st'>"log Kow"</span>, <span class='kw'>ylab</span> <span class='kw'>=</span> <span class='st'>"TSCF"</span>, <span class='kw'>ylim</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>0</span>, <span class='fl'>1.1</span>))</div><div class='input'><span class='no'>TSCF_2</span> <span class='kw'><-</span> <span class='kw'>function</span>(<span class='no'>x</span>) <span class='fu'>TSCF</span>(<span class='no'>x</span>, <span class='kw'>method</span> <span class='kw'>=</span> <span class='st'>"dettenmaier09"</span>) +<span class='fu'><a href='https://rdrr.io/r/graphics/curve.html'>curve</a></span>(<span class='no'>TSCF_2</span>, -<span class='fl'>1</span>, <span class='fl'>5</span>, <span class='kw'>add</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>, <span class='kw'>lty</span> <span class='kw'>=</span> <span class='fl'>2</span>)</div><div class='input'><span class='fu'><a href='https://rdrr.io/r/graphics/legend.html'>legend</a></span>(<span class='st'>"topright"</span>, <span class='kw'>lty</span> <span class='kw'>=</span> <span class='fl'>1</span>:<span class='fl'>2</span>, <span class='kw'>bty</span> <span class='kw'>=</span> <span class='st'>"n"</span>, + <span class='kw'>legend</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"Briggs et al. (1982)"</span>, <span class='st'>"Dettenmaier et al. (2009)"</span>))</div><div class='img'><img src='TSCF-1.png' alt='' width='700' height='433' /></div></pre> + </div> + <div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar"> + <nav id="toc" data-toggle="toc" class="sticky-top"> + <h2 data-toc-skip>Contents</h2> + </nav> + </div> +</div> + + + <footer> + <div class="copyright"> + <p>Developed by Johannes Ranke.</p> +</div> + +<div class="pkgdown"> + <p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.5.1.</p> +</div> + + </footer> + </div> + + + + + </body> +</html> + + |