Spectroscopy April 2020

April 01, 2020

Click the title above to open the Spectroscopy April regular issue, Volume 35, Issue 4, in an interactive PDF format.

The unique strengths of LIBS-sample preparation optional, stand-off detection, portability, speed, and sensitive light element detection-point to future directions and potential for LIBS as a tool for soil measurements in precision agriculture.

When using infrared (IR) instruments in a regulated laboratory, it is essential to conduct meaningful performance qualification (PQ) tests to maintain compliance.

Spectroscopy Spotlight

April 01, 2020

The ultimate goal of X-ray diffraction (XRD) profile modeling is to interpret XRD patterns measured from real samples. David Bish of Indiana University explores ways to streamline and accelerate the process with a new matrix methodology.

The SERS signal arises from the combination of the number of molecules, the polarizability or cross-section of the molecule, and the electric field experienced by the molecules. Understanding how these variables interact to generate the SERS response is the key to applying SERS accurately.

Special Features

April 01, 2020

Recent technical advances in biomedical Raman imaging pave a way to its application in the biomedical fields, where morphological information of samples provides rich information. A recent technical conference in Osaka, Japan, explored these developments.

Many foods containing potentially harmful additives are labeled as additive-free. Detecting these additives can be challenging. A rapid method for additive detection is demonstrated using 3D fluorescence spectroscopy combined with an independent component analysis algorithm.

By applying vis-NIR spectroscopy, combined with an integrating sphere technique, a method for nondestructive testing of internal lesions in apples has been developed. This work provides a theoretical basis for the nondestructive testing of apples using tissue optical parameters.