Spectroscopy-10-01-2019

Alignment of the instrument y-axis is a critical step for quantitative and qualitative measurements using spectroscopy. Here, we explain in detail how to use photometric standards for ultraviolet, visible, near infrared, infrared, and Raman spectroscopy.

A laminar flow box for sampling is combined with a positive voltage on the skimmer cone to reduce detection limits to pg/L concentrations in ICP-MS. These improvements reduce the risk of contamination and increase the efficiency of ion sampling and focusing.

SERS is a method that is receiving new attention in the detection, analysis, and identification of both natural and artificial food colorants. Lili He, at the University of Massachusetts, Amherst, recently spoke to Spectroscopy about this important analytical work.

The morphology and gap spacing of nano-island film SERS substrates are key factors defining the properties of analyte‒substrate interactions. These results of the study described here have implications for understanding signal variation in SERS and in designing future SERS assays.

Lasers allow advances for investigation of biological samples. Discussed here are some of the most interesting recent developments in light sheet microscopy for bioimaging, including a technique that allows for unique viewing of large, intact samples including biopsies.

Ishan Barman, this year’s Emerging Leader in Molecular Spectroscopy award recipient, leads a research team combining spectroscopy, imaging, and chemometrics to seek greater understanding of the pathological changes of human cells and tissues.

Click the title above to open the Spectroscopy October regular issue, Volume 34, Issue 10, in an interactive PDF format.