Axiom Analytical has announced the availabilty of a new technical note, A Beginner's Guide to Spectroscopic Analysis for Industrial Applications, which is intended to serve as a brief introduction to the diverse forms of molecular (or vibrational) spectroscopy as applied to both process development and on-line process applications. It provides a brief introduction to mid-IR, NIR, UV-vis and Raman and discusses sampling methods applicable to each. One table compares the attractiveness of each in light of the band type involved, calibration methods, optical materials, availability of fibre-optics, sample fluorescence, background radiation, references and cost of ownership. A second tables summarises the applicability of the three major forms of molecular spectroscopy to specific sample types and a third tables assesses the applicability of each form of spectroscopy to clear liquids in the light of a variety of considerations such as the need for in situ sampling, high temperatures and pressures, corrosive samples, the need for functional group specificity, rapid survey, short production runs, thermal background, availability of an internal reference and cost of ownership. A final section reviews the conditions favouring extractive vs in situ sampling.

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