<?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:creator>Robert A. Zielinski</dc:creator>
  <dc:date>1975</dc:date>
  <dc:description>&lt;p&gt; A radiochemical procedure has been developed for the determination of very low concentrations of nickel in rocks and minerals. Sensitivity is 0.01 &lt;i&gt;&lt;span&gt;μ&lt;/span&gt;&lt;/i&gt;g Ni. Accuracy and precision is estimated to be ±5 percent to levels as low as 0.1 &lt;i&gt;&lt;span&gt;μ&lt;/span&gt;&lt;/i&gt;g Ni a marked improvement over other analytical techniques. Samples are irradiated, combined with nickel carrier, and treated by a series of chemical procedures: (1) collection of nickel in a lead bead using a fire-assay technique, (2) refusion of the lead bead and precipitation of basic element hydroxides, (3) anion-exchange chromatography, and (4) precipitation of nickel dimethylglyoxime. The nickel precipitate is weighed to determine chemical yield and counted for &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt; activity of Ni&lt;span id="_mce_caret" data-mce-bogus="1" data-mce-type="format-caret"&gt;&lt;sup&gt;65&lt;/sup&gt;&lt;/span&gt; along with a precipitate from irradiated nickel standard solution.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>U. S. Geological Survey</dc:publisher>
  <dc:title>Radiochemical determination of very low concentrations of nickel in rocks and minerals</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>