Spectroscopy-10-01-2008

Spectroscopy

The Role of Naturally Occurring Stable Isotopes in Mass Spectrometry, Part I: The Theory

October 01, 2008

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In this tutorial, the authors explain how naturally occurring stable isotopes contribute to experimentally determined mass spectra and how this information can be exploited in quantitative experiments, structural elucidation studies, and tracer methodologies. The first installment of this series focuses on the theoretical aspects of stable isotopes and the calculation of their distribution patterns.

Products

October 01, 2008

Departments

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Agilent's model 7500cx collision cell ICP-MS system uses pure helium as the collision gas. According to the company, the system is capable of eliminating or reducing all polyatomic interferences in any matrix under a single set of generic conditions.

Market Profile: Laser Ellipsometry

October 01, 2008

Departments

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Ellipsometry is the analysis of the change in the state of polarized light after it has reflected from the surface of a thin film sample. Laser ellipsometry, which has certain advantages and disadvantages, is a subset of this market. Applications for laser ellipsometry prinarily are related to the semiconductor and electronics industry, but its use in the life sciences could offer significant new demand.