High spectral stability and quantitative accuracy of LIBS by optimization of combined atomic and ionic line algorithm

Large spectral fluctuations bring large errors in laser-induced breakdown spectroscopy (LIBS) analysis, which impedes the improvement of precision and accuracy, limiting the large-scale application and commercialization. In this work, we...

A fast, single column extraction chromatography method for the isolation of Neodymium from iron-rich materials prior to radiogenic isotope ratio measurements

A novel separation method is described for the separation of Nd from Fe-rich, silicate samples in view of isotopic analyses. The procedure is based on the synergistic enhancement of the...

Direct measurement of Fe isotope compositions in iron-dominate minerals without column chromatography using MC-ICP-MS

This study presents a practical method for high-precision Fe isotope determination without column chromatography purification for iron-dominated mineral samples using multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). A series of comparable...

High resolution plutonium-239/240 mixture alpha spectroscopy using centrifugally tensioned metastable fluid detector sensor technology

This paper presents a novel and rapid, wet chemistry technique for spectroscopically detecting trace (∼10−3 Bq mL−1) level alpha emitting radionuclides mixtures with under 10 keV alpha energy resolution – with 100% gamma–beta rejection.

A tandem-column extraction chromatography for Nd separation: minimizing mass-independent isotope fractionation for ultrahigh-precision Nd isotope-ratio analysis

The short-lived 146Sm-142Nd isotope system traces key early planetary differentiation processes that occurred during the first 500 million-years of solar system history. The variations of 142Nd/144Nd in terrestrial samples, typically...

Measurement of 87Sr/86Sr in limestones after acid leaching and direct injection in a liquid chromatograph coupled to Multicollector ICP-MS

A procedure for the measurement of 87Sr/86Sr in carbonates without off-line strontium separation was developed, validated and applied to Normandy chalkstones. The method is based on the injection of the...

Optimization of the double isotope dilution

The double isotope dilution is a powerful methodology to measure accurately the ratio between two isotopes of two different elements (e.g.238Pu/238U, 148Nd/238U or 230Th/238U ratios). To obtain the lowest...

Highly sensitive analysis of trace elements in aqueous solutions using surface-enhanced and discharge-assisted laser-induced breakdown spectroscopy

By combining surface-enhanced and discharge-assisted laser-induced breakdown spectroscopy (LIBS), the study successfully realized the quantitative analysis of trace heavy metal Cr, Cu, and Pb in aqueous solutions. We used an...

Novel thiol-functionalized covalent organic frameworks enabled ICP-MS measurement of ultra-trace metals in complex metrics

The measurement of ultra-trace level of heavy metals in complex metrics is of great concern and challenge in life and environmental science. Herein, a novel thiol-functionalized covalent organic framework (COF)...

High-precision apatite δ37Cl measurement by SIMS with 1012 Ω amplifier Faraday cup

Chlorine is a redox-sensitive and fluid-mobile element, and is involved in many geological processes. Apatite, a ubiquitous accessory mineral in mafic to felsic rocks, is the most-studied mineral in chlorine...