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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.
The Chemical Analysis Process
October 01, 2008
Articles
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10
The authors present an overview of the chemical analysis process.
Raman Images from Raman Maps - Spatial Resolution, Mapping Speed, and Multivariate Techniques for Constructing the Image
October 01, 2008
Columns: Molecular Spectroscopy Workbench
23
10
Columnist Fran Adar discusses the physical determinants of spatial resolution and developing methods to improve the mapping speeds of Raman images.
The Long, Complicated, Tedious, and Difficult Route to Principal Components: Part V
October 01, 2008
Columns: Chemometrics in Spectroscopy
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10
For a system of homogeneous equations to have a solution other than the trivial solution, the determinant of the system of equations must be zero.
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
23
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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.