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Chapter III CHN Analysis, FT IR …..
Chapter - III
CHN Analysis, Paper Chromatography, FTIR and Powder X –
Ray Diffraction Studies of Pure and L-histidine, L-threonine
3.1 Introduction
and DL-methionine Doped KDP crystals
It is important to confirm the doping in KDP crystals, because the doping
affects various properties of grown crystals. In the present study, attempts have
been made to confirm the amino acids doping in KDP crystals by employing
CHN analysis, FT-IR spectroscopy and paper chromatography. This chapter is
dedicated to the studies related to the confirmation of doping and its effects on
crystal structure.
The powder XRD study has been carried out for pure and amino acids
doped KDP crystals in order to identify the single phase or multi phase nature of
the compound, the distortion in the unit cell of KDP crystal due to doping and
effect on the powder XRD pattern due to progressive increase in doping
concentration.
3.2 CHN Analysis
All dopants, viz, L-histidine, L-threonine and DL-methionine (amino acids)
contain carbon, hydrogen and nitrogen, while in KDP carbon and nitrogen are
absent, therefore, the confirmation of successful achievement of doping of
various amino acids in KDP crystals can be carried out by detecting the presence
of carbon and nitrogen in the doped samples and their different proportions for
different levels of various doping. Elemental analysis of carbon, hydrogen and
nitrogen is the most essential and in many cases investigation performed to
characterize and/or to prove the elemental composition of an organic sample.
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