The infrared absorption spectra in the out-of-plane
bending (v₂) region of potassium nitrate were studied for
three phases. Several types of sampled were used: nujol
mulls, fused samples, and N¹⁴-N¹⁵ isotopic mixtures. The
existence of three of the reported polymorphic phases was
confirmed by the spectra. The transitions between phase...
A study was made of the infrared absorption spectrum for
cyanate ion in KCl and KBr host lattices containing small amounts of
calcium or barium ion. Both pellets and single crystals were
scanned during the course of this study. The spectra of the barium
or calcium doped crystals contained many...
The role of beta-carotene degradations in the development of
off-flavors in milk and milk products has not been established. The
purpose of this investigation was to study the oxidation of beta-carotene
and to identify volatile compounds arising from autoxidizing
beta-carotene.
Pure cyrstalline beta-carotene, mixed with Celite to accelerate
oxidation, was...