<?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>L. P. Greenland</dc:contributor>
  <dc:creator>A. E. Childress</dc:creator>
  <dc:date>1980</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;After acid decomposition and potassium pyrosulfate fusion, niobium (1—26 ppm) is separated from interfering elements by extraction into methyl isobutyl ketone from 6 M H&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;SO&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;—2 M HF and back-extracted into water. The niobium—sulfochloro-phenol S complex is extracted into amyl alcohol.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/S0003-2670(01)84330-0</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Extraction spectrophotometric determination of niobium in rocks with sulfochlorophenol S</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>