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More than one and a half decades have passed since the last book
was published describing developments in the analytical chemistry
of synthetic colorants. In the intervening period, the scope and
technical capabilities of instrumentation for analysing dyes and
pigments has significantly expanded. It is now possible to rapidly
resolve a number of problems whose solutions were previously either
unattainable or very difficult to achieve. For instance, the
unambiguous assignment of all the signals in the proton NMR
spectrum of a trisazo direct dye, and the confirmation of the
molecular weight of involatile, and, in particular, sulphonated
dyes, without derivatisation, are now routine analytical techniques
in many laboratories today. In addition, it is now possible to
record the NMR spectrum of a dye molecule on less than 1 mg of
material, and we are no longer limited to solution spectra, since
solid samples can now be routinely analysed in NMR experiments.
Whilst not attempting to be all encompassing, this volume is
intended to bridge the gap between what was covered in the earlier
work edited by Professor Venkataraman and the developments which
have since ensued in some key areas. It provides important updates
in X-ray crystallography, proton NMR, IR spectroscopy and mass
spectrometry, and additionally covers topics such as ESR, micro
spectrophotometry and emission spectroscopy.
More than one and a half decades have passed since the last book
was published describing developments in the analytical chemistry
of synthetic colorants. In the intervening period, the scope and
technical capabilities of instrumentation for analysing dyes and
pigments has significantly expanded. It is now possible to rapidly
resolve a number of problems whose solutions were previously either
unattainable or very difficult to achieve. For instance, the
unambiguous assignment of all the signals in the proton NMR
spectrum of a trisazo direct dye, and the confirmation of the
molecular weight of involatile, and, in particular, sulphonated
dyes, without derivatisation, are now routine analytical techniques
in many laboratories today. In addition, it is now possible to
record the NMR spectrum of a dye molecule on less than 1 mg of
material, and we are no longer limited to solution spectra, since
solid samples can now be routinely analysed in NMR experiments.
Whilst not attempting to be all encompassing, this volume is
intended to bridge the gap between what was covered in the earlier
work edited by Professor Venkataraman and the developments which
have since ensued in some key areas. It provides important updates
in X-ray crystallography, proton NMR, IR spectroscopy and mass
spectrometry, and additionally covers topics such as ESR, micro
spectrophotometry and emission spectroscopy.
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