X-ray Analysis

The EDXRF method described here is a quick and economical procedure to check samples for their oxygen content to ensure that the material used for diesel fuel blending is really FAME-based and not mineral-oil based.

An evaluation of the ability of XRF spectrometry to perform elemental impurity analysis of 12 elements in various pharmaceutical materials

Several leading scientists discuss their work to advance XRF and XRD techniques.

These tables are supplementary to the “Atomic Perspectives” column installment “Using XRF as an Alternative Technique to Plasma Spectrochemistry for the New USP and ICH Directives on Elemental Impurities in Pharmaceutical Materials,” which was published in the July 2017 issue of Spectroscopy (1).

Miniaturization of analytical instruments of various forms of spectroscopy has improved dramatically in recent years mainly because of the requirements in certain areas such as space, industrial, and environmental research. Research into miniaturization is primarily driven by the need to reduce the instrumental space and costs by reducing the consumption of expensive reagents and by increasing throughput and automation. Like other fields, analytical systems have also been affected by novel ideas and unprecedented advances in the microelectronics leading to miniaturization of different components in recent years. This article presents an overview of the current developments in the miniaturization of analytical instruments for mainly detecting metals at extremely low concentration levels, with some important examples from areas such as space, mineral exploration, the environment, and pharmaceuticals, focusing primarily on advancements as well as the challenges that have impacted from some of the major international manufacturers.

Several leading scientists discuss recent developments and trends in XRF and XRD techniques.

Total reflection x-ray fluorescence (TXRF) spectrometry is an energy-dispersive x-ray technique that is used for elemental and chemical analysis, and is especially suitable for small-sample analyses. Ursula Fittschen, an assistant professor at Washington State University, is working on elemental microscopy and micro analysis. She has been using TXRF to analyze stainless steel metal release, and also airborne silver nanoparticles (NPs) from fabrics. Here, she describes the advantages and challenges of this technique.

Our annual review of products introduced at Pittcon or during the previous year, broken down by the following categories: accessories, atomic spectroscopy, components, imaging, mass spectrometry, mid-IR, NIR, NMR, Raman, software, UV-vis, and X-ray.

As a fast, quasi-nondestructive analytical technique, X-ray fluorescence (XRF) spectroscopy is useful for a wide range of applications. To get a sense of the current breadth of XRF’s use and its potential growth in new areas, we asked a panel of experts to comment on the most important application areas for XRF, including the challenges involved and how XRF competes with other techniques.

Zinc telluride films doped with gadolinium (ZnTe:Gd)-made by laser ablation and deposition-have been characterized by X-ray photoelectron spectroscopy (XPS) to determine the molecular species of the elements in the material and their presence as intentionally formed contaminants.

In honor of Spectroscopy's celebration of 30 years covering the latest developments in materials analysis, we asked a panel of experts to assess the current state of the art of X-ray fluorescence and to try to predict how the technology will develop in the future.

Works of art often consist of multiple layers and can require several complementary techniques for complete analysis, and invasive sample preparation procedures and analysis techniques are not good choices. This interview with Dr. Karen Trentelman of the Getty Conservation Institute (GCI) in Los Angeles, California, discusses her research with X-ray fluorescence (XRF) spectroscopy for the study of cultural heritage materials such as paintings, sculptures, and illuminated manuscripts.

Determination of trace metals in oil and petroleum typically is based on ICP-OES methods, requiring signficant sample preparation and expensive instrumentation. This article presents an alternative method, based on the use of a handheld energy-dispersive X-ray fluorescence analyzer, that involves minimal sample preparation, uses authentic standards for calibration, gives low parts-per-million detection limits, and provides significant time and cost savings.

A look at ICP–MS, ICP–OES, X-ray fluorescence spectroscopy, and laser-induced breakdown spectroscopy in the areas of research and development, marketing, application, and use of these techniques.

Here, Li2CaSiO4:Sm3+ reddish orange phosphors were synthesized by a solid-state reaction method and examined by spectroscopic methods.

Everyone loves a list, and the editors of Spectroscopy are no exception! In 2013, Spectroscopy covered a wide array of topics throughout the year to bring you the most relevant information for your work, on topics ranging from selecting the right ICP-MS system to deciding which Raman technique is right for you, from our annual salary survey to calibration transfer. Here is a list of 13 popular articles and columns from 2013

Click here to view the complete Wavelength newsletter from November 12, 2013.

The main areas of training necessary for a good foundation in the analytical methodology of XRF spectroscopy are discussed.

Researchers continue to find new uses for portable X-ray fluorescence and portable Raman techniques in the field. Mary Kate Donais, an associate professor in the Department of Chemistry at Saint Anselm College, recently spoke to us about her experiences with these techniques at an archaeological excavation site in Italy.

X-ray photoelectron spectroscopy (XPS) can be used to determine the contaminants present on laboratory gloves and to evaluate the type and amount of contamination transfer from gloves to other surfaces.

Raman has a unique capability to characterize nanoscale materials that are between crystalline and amorphous.

This November, NASA's Mars Science Laboratory will be launched on a mission to Mars that will deploy a new rover, called "Curiosity." Curiosity will include several analytical instruments, including "CheMin," which uses X-ray diffraction (XRD) and also has limited X-ray fluorescence (XRF) capabilities.

Koen Janssens, professor of chemistry at the University of Antwerp (Belgium), uses synchrotron radiation-based X-ray fluorescence (XRF) to analyze historic works of art. In a recent study, he used various spectroscopic techniques, including several X-ray methods, to reveal the process by which the yellow paint in some of Vincent Van Gogh?s paintings darkened over time.

Here's a preview what you'll hear at the Denver X-ray Conference.

From the field to the synchrotron, XRF is expanding its power and scope.