COLUMNS
THE BASELINE
Maxwell’s Equations, Part II
In the realm of classical physics, Maxwell’s equations still rule, just as Newton’s equations of motion rule under normal conditions.
David W. Ball

CHEMOMETRICS IN SPECTROSCOPY
Classical Least Squares, Part VI: Spectral Results
The detailed examination of the spectral behavior of three-component mixtures continues.
Howard Mark and Jerome Workman, Jr.

ARTICLES
Optimizing FT-IR Sampling for a Method to Determine the Chemical Composition of Microbial Materials
Algae and other aquatic species are promising sources for biomass that can be economically converted into fuel, and several infrared sampling techniques can be used to analyze these samples.
Steve Lowry

The pH Dependence of the SERS Spectra of Methyl Yellow in Silver Colloid
Surface plasmon resonance, charge-transfer resonance, and their combination determine the enhancement of surface-enhanced Raman scattering signals, and the varying intensities of the signal at different pH levels may result from the change in contributions of the combined system.
Zhen Long Zhang, Da Hu Chang, and Yu Jun Mo

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