Spectroscopy-04-01-2013

Portable molecular spectroscopy techniques used in the pharmaceutical and biopharmaceutical industries consist of Raman, infrared (IR), and near-infrared (NIR) spectroscopy.

Mid-infrared quantum cascade lasers, recently developed and commercialized, have unique properties that advance the analytical capabilities of IR spectroscopy in many ways. Bernhard Lendl of Vienna University of Technology in Austria explains these developments.

A method that demonstrates Raman spectroscopy can be a rapid and reliable analytical method for the identification and quantitative determination of puerarin, a compound found in a traditional Chinese medicine.

A detailed look at what makes the sky appear blue in color, using Rayleigh scattering, Maxwell's equations, and the Mie theory.

A P-spline signal regression (PSR) with net analyte signal (NAS) method is proposed to construct a quantitative calibration model with high precision.

Products

A look at what the requirements are for "complete data" for laboratories working under the FDA GMP regulations. We also review the observations listed by inspectors on 483 forms from 2006 to 2012, to assess the common mistakes companies make.

Click the title above to open the Spectroscopy April 2013 regular issue, Vol 28 No 4, in an interactive PDF format.