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We report on a new laser-based technique for rapid, quantitative and automated in situ double dating (U–Pb and (U–Th–Sm)/He) of minerals, for applications in geochronology, thermochronology and geochemistry. In situ laser microanalysis offers several advantages over conventional bulk...
The measurement of plutonium (Pu) in a soil matrix is of interest in safeguards, nuclear forensics, and environmental remediation activities. The elemental composition of two Pu contaminated soil particles was characterized nondestructively using micro X-ray fluorescence spectrometry (micro-XRF)...
The formation of metal soaps is a major problem for oil paintings conservators. The complexes of either lead or zinc and fatty acids are the product of reactions between common pigments and the oil binder, and they are associated with many types of degradation that affect the appearance and...
This work investigates the possibility of obtaining isotopic information via the monitoring of the absorption spectra of a gaseous diatomic molecule generated in a graphite furnace and using a high-resolution (approx. 1.5 pm per pixel) monochromator (HR CS GFMAS). To test this concept, Cl was...
To improve signal-to-noise ratios (SNRs) in open air mass spectrometry, a laser-assisted, direct-analysis-in-real-time (DART) mass spectrometer (LA-DART-MS) was developed by integrating a continuous wave (CW) infrared (IR) laser into an open air DART-MS. The CW IR laser (wavelength of 1070 nm)...
We used a Monte Carlo error model to optimize a 48 Ca– 43 Ca double-spike technique for measuring Ca isotope ratios ( δ 44/40 Ca and δ 44/42 Ca) by Multi-Collector Thermal Ionization Mass Spectrometry (MC-TIMS). The model considers errors for counting statistics and Johnson noise, as well as...
This is the seventh Atomic Spectrometry Update (ASU) to focus on advances in elemental speciation and covers a period of approximately 12 months from December 2013. This ASU review deals with all aspects of the analytical speciation methods developed for: the determination of oxidation states;...
Mass spectrometry is currently being implemented in a wide spectrum of research and industrial areas, such as materials science, cosmo- and geochemistry, biology and medicine, to name just a few. Research and development in nuclear safeguards is closely related to the general field of “Peace...
To improve the precision of isotope analyses of low ion intensities using the Faraday detection system, amplifiers equipped with 10 12 Ω resistors (hereafter 10 12 Ω amplifiers) have been developed. While the behavior of these amplifiers for steady signals has been well investigated, there is...
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