Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / pratima bhandarkar
The principle of FTIR is based on the fact that bonds and
groups of bonds vibrate at characteristic frequencies. A
molecule that is exposed to infrared rays absorbs infrared
energy at frequencies which are characteristic to that
molecule. In a molecule, the differences of charges in the
electric fields of its atoms produce the dipole moment of
the molecule. Molecules with a dipole moment allow infrared
photons to interact with the molecule causing excitation to
higher vibrational states. Diatomic molecules do not have a
dipole moment since the electric fields of their atoms are
equal. During FTIR analysis, a spot on the specimen is
subjected to a modulated IR beam. The specimen's
transmittance and reflectance of the infrared rays at
different frequencies is translated into an IR absorption
plot consisting of reverse peaks. The resulting FTIR
spectral pattern is then analyzed and matched with known
signatures of identified materials in the FTIR library.
| Is This Answer Correct ? | 22 Yes | 1 No |
Post New Answer View All Answers
Identify problem faced when mass spectroscopy is used with HPLC system ?
what is definition of validation? which components are followed give detail?
What should be the level/ Percentage of Arsenic in Arsenic free zinc.
how you determine moist.of NaOH sol or NaOH flacks
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
How to start the dissolution development for unknown tab?
how to select short coloum and long coloumn for new molecule
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
How to know the estimated LOQ concentration in ppm
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
What is the Formula for coreletion coefficient in plhplc calibration
What is the diference between residual solvents and organic volatile matter
is it nessesary to do solution stability for 7 days?
which are the sizes of capsules?
What is third generation HPLC Columns?
