Some of the most complex chemical mixtures in everyday use are inks that are comprised of a wide variety of chemical compounds. Various metal ions in the form of metal chelates and other compounds can provide the color.  Inks will sometimes have more than one metal ion contained in them, all of which are at extremely low levels and which result in the variation of the different colors of ink.  The metal-based compounds all have some degree of solubility in solvents, depending on their solubility constants.  The concentration of metals in the ink and their ratios can vary greatly, depending on the source and the role of the metal ions.  In the present study, a synchrotron X-ray fluorescence (XRF) microprobe has been used to analyze metal ion components in commercial ink/paper host materials.   Elemental maps for different metal ions are shown for ink that has been applied to commercial chromatography paper.   Elemental analytical data for some of the common metal ions are shown, and the analyses for the metal ions in the ink/paper systems are discussed with respect to their origins and the processes which they are known to undergo in paper.<br/>

Metal ions in inks studied by synchrotron x-ray fluorescence microprobe techniques

253rd National Meeting (2017)

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