Spectroscopy-02-01-2008

Howard Mark and Jerome Workman, Jr. continue their discussion of the derivation of the principal component algorithm using elementary algebra.

Columnist Fran Adar discusses surfaced-enhanced Raman scattering (SERS). The phenomenon is described and the enhancement factors that make it so attractive for analytical purposes are pointed out. In particular, she reviews the state-of-the-art from the point of view of the instrumentation and the robustness of the measurements.

The author examines NIR spectrometers and the technologies developed during the telecommunications boom of the late 1990s, focusing on miniaturized optical techniques generally called MOEMS.

The authors develop a label-free SERS method for rapid, accurate, specific, and routine screening of E. coli, L. monocytogenes, and S. typhimurium bacteria for public safety and security.

The implementation of ICP-MS as a detection system for reversed-phase HPLC was proven to be a useful technique for the investigation of pharmaceutical molecules containing the heteroatoms sulfur, phosphorus, bromine, and chlorine, as well as organometallic compounds containing a transition metal such as cobalt.

Featured products from the spectroscopy marketplace.

A preview of one of the premier events for the security and defense industries.

The concept of portable mass spectrometry has been around for some time, but the realization of such technology has been largely limited until very recently. More than ever before, recent technological advances now make smaller, lighter, and more effective mass spectrometers possible. Such advances will lend themselves to a growing spectrum of applications as well.