Determination

By measuring the random jiggling motion of electrons in a resistor, researchers at the National Institute of Standards and Technology (NIST) have contributed to accurate new measurements of the Boltzmann constant, a fundamental scientific value that relates the energy of a system to its temperature. more

An international research group led by Tom Gregorkiewicz, professor at the University of Amsterdam and Yasufumi Fujiwara, professor at Osaka University's Graduate School of Engineering together with his Japanese group at National Institute of Advanced Industrial Science and Technology determined dir more

A new X-ray method will enable the development of more efficient catalysts. The method opens up new opportunities to work on atomic level in a number of areas of materials science. Researchers from Lund University are among those behind the new method. The new X-ray method is used to determine the a more

High molecular weight polymers, bio molecules or particles in a range of a few nanometers up to several microns are more and more important more

By amending methodology to utilize eVol® for sample preparation processes for GC-C-IRMS C isotope ratio analysis, the ISORA department has: improved sample preparation conditions and the GC-C-IRMS analysis results by removing the risk of ghost peaks, more

The light in the high-radiance wavelength region of the solar spectrum is not utilized effectively by silicon crystal-based solar cell modules. "Fluorescent materials" convert the ultraviolet component in the sunlight into light in the longer wavelen more

We report the first development of a distance-based paper sensor for a simple, inexpensive, instrument-free, and portable determination of chloride ions. Our analysis reaction is based on the oxidative etching of silver nanoparticles (AgNPs) to form AgCl in the presence of Cl⁻ and H2O2. The H2O2 rea more

In this paper, we explore a variety of aqueous digestion techniques for the determination of gold, in a wide variety of mineral matrices. These include feldspar, basalt, pyrites, and other gold-containing minerals. The acid-based digestion methods compete effectively with fire assay to deliver accur more

This is the tenth Atomic Spectrometry Update (ASU) to focus on advances in elemental speciation and covers a period of approximately 12 months from December 2016. This ASU review deals with all aspects of the analytical atomic spectrometry speciation methods developed for: the determination of oxida more