Spectroscopy

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

The analytical world in general has yet to appreciate the power of FTIR spectroscopic imaging for process analysis. Here’s why it should be in your toolkit.

Can a new slippery surface for Raman scattering open the door to routine single molecule detection?

Usually, PLA and PLGA are based on monomers from renewable sources, so are considered “green” polymers. By selecting different molecular weights, different ratios of lactic:glycolic acid and different molecular structures, some properties such as degradation or drug release rates can be tailored to meet application needs. GPC/SEC analysis is an ideal tool for monitoring samples during material synthesis, production of parts and in degradation studies.

The analytical performance of laser-induced breakdown spectroscopy (LIBS) can be improved dramatically by using an artificial neural network approach, opening up new opportunities for its application.

Three years on, and our mission to record, celebrate and scrutinize analytical science is as strong as ever.