The determination of transition metal ions in anaerobic adhesives by reverse phase high performance liquid chromatography

TL;DRAbstract

By using reverse phase high performance liquid chromatography (HPLC) and chelating agents such as dithiocarbamates or 8-hydroxyquinoline it was possible to separate a range of metal ions which are of importance in the polymerisation chemistry of anaeorbic adhesives.
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\nThese metal-chelate complexes can be formed 'in-situ' or
\nexternally. 'In-situ' complexation involves incorporating the chelating agent into the mobile phase and external formation involves mixing the appropriate metal ions with the chelating agent prior to HPLC separation.
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\nUsing sodium diethyldithiocarbamate as the chelating agent, it was possible to selectively separate metal ions such as Ni(II), Co(lII) and Fe(lll), using a C^g reverse phase system with ultraviolet detection at 254 nm. The main disadvantage of sodium diethyldithiocarbamate was that it does not have the selectivity to fully resolve Cu(II) and Fe(IIl). These are two most important metal ions in anaerobic adhesive chemistry, a

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