<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>R.W. Gale</dc:contributor>
  <dc:contributor>K. Feltz</dc:contributor>
  <dc:contributor>J. O'Laughlin</dc:contributor>
  <dc:contributor>D. E. Tillitt</dc:contributor>
  <dc:contributor>T.R. Schwartz</dc:contributor>
  <dc:creator>K. R. Echols</dc:creator>
  <dc:date>1998</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;A porous graphitic carbon column (Hypercarb) was used for the fractionation of polychlorinated biphenyls (PCBs) into classes of 2-4 &lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; chlorines, 1 &lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; chlorine and 0 &lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; chlorine congeners. A method was developed that combined the fractionation of PCBs, polychlorinated dibenzo-&lt;/span&gt;&lt;i&gt;p&lt;/i&gt;&lt;span&gt;-dioxins and dibenzofurans in a variety of biotic environmental samples. Many of these samples have high concentrations of PCBs which cause fractionation problems as adsorption sites on the graphitic surface are occupied. The loading capacity of the column for PCBs was determined by injecting up to 1 mg of total PCBs and monitoring changes in chromatographic behavior of tetra-/di-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt;, mono-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; and non-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; substituted PCBs. Effective loading capacities were 1 mg for tetra-/di-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; PCBs, but only 3–5 μg for non-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; PCBs and about 2 μg for mono-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; PCBs. Loading capacity of the PGC column for environmental fish and avian egg samples was determined to depend on the mono-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; and non-&lt;/span&gt;&lt;i&gt;ortho&lt;/i&gt;&lt;span&gt; PCB levels found in these samples.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/S0021-9673(98)00241-6</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Loading capacity and chromatographic behavior of a porous graphitic carbon column for polychlorinated biphenyls</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>