Spectroscopy-10-01-2015

Spectroscopy
App of the Month

October 16, 2015

The IR Explainer app is designed for investigating compound chemical structures using infrared spectroscopy.

Spectroscopy
Chemometrics in Spectroscopy

October 01, 2015

We present the first of a short set of columns dealing with the subject of statistics. This current series is organized as a “top down” view of the subject, as opposed to the usual literature (and our own previous) approach of giving “bottom up” description of the multitude of equations that are encountered. We hope this different approach will succeed in giving our readers a more coherent view of the subject, as well as persuading them to undertake further study of the field.

This article offers some suggestions for routine maintenance and offers guidance to troubleshoot common problems encountered in the ICP-MS sample introduction area.

High stability Fourier transform-infrared (FT-IR) interferometers make it possible to conduct experiments designed to identify subtle sample structure changes resulting from external perturbations. In particular, IR spectrum measurements obtained while heating samples can be used to associate specific structure changes with incremental additions of thermal energy. This paper describes the application of variable temperature diffuse reflection infrared Fourier transform spectroscopy (VT-DRIFTS) for analysis of benzoic acid adsorbed on montmorillonite clay. The technique described here is generally applicable for soil adsorbate characterization studies, and therefore should be useful for elucidating soil transport mechanisms for selected contaminants.

Issue PDF
Spectroscopy

October 01, 2015

Click the title above to open the Spectroscopy October 2015 regular issue, Vol 30 No 10, in an interactive PDF format.

The SGX Sensortech X-ray Transition Energies Database app is designed as a tool for X-ray spectroscopy measurements.