Spectroscopy

In the light of a disruptive new paper, four experts discuss the future of Raman spectroscopy

Isn't it time to share resources to open up more opportunities for metabolic profiling?

Get the most out of Pittcon, Atlanta with our top picks from the sessions.

Triple detection GPC/SEC combines measurements from multiple detectors to offer not only increased amounts of data, but also increased amounts of information, which is made available by the combination of different detectors (and unobtainable using individual detectors separately). The theory of triple detection GPC/SEC is described here.

This application note describes the analyses of a variety of aqueous (water-soluble) cellulose derivatives using the OMNISEC triple detection system and the subtle, yet distinct differences between these different derivatives that can be parsed out by the OMNISEC system

In this application note, molecular weight data from the Viscotek SEC-MALS 20 is combined with measurements of Rg and IV to study the structure of different polysaccharides including pullulan, dextran, hydroxypropyl cellulose (HPC), pectin and gum Arabic. The differences between conformation and Mark-Houwink plots are also studied.

The investigative power of multiple detectors. Here, we describe the analysis of a semi-purified protein mixture containing β-amylase. Step-by-step, we show how different properties of the proteins elicit a specific response in each detector and how coupling this data can be qualitatively and quantitatively evaluated.

Compact Spark spectral sensor measures Vis-NIR absorbance of hemoglobin – and more

F. Scott Anderson, a staff scientist at the Southwest Research Institute, Boulder, Colorado, USA, discusses the potential of in-situ resonance ionization mass spectrometry for understanding the age of planetary bodies.

Scientists who are dissatisfied with the analysis of samples from our blue planet look to the stars