Prof. Wang co-authors a new paper in Analytical Chemistry

The article entitled "Stable Isotope Analysis of Intact Oxyanions Using Electrospray Quadrupole-Orbitrap Mass Spectrometry” published by Neubauer et al., described a new method for analyzing the isotopic composition of intact oxyanions such as nitrate and sulfate. Orbitrap is a high-resolution mass spectrometry analyzer that is commonly used in life sciences (e.g., proteomics) but rarely used in Earth and environmental sciences. By coupling Orbitrap mass analyzer with electrospray ionization, this study showed for the first time that multiple singly- and multiply-substituted isotopic forms of sulfate and nitrate can be measured simultaneously at natural-abundance levels. In addition, this new method has the potential to achieve better sensitivity, sample throughput, and precision than many existing methods based on sector mass spectrometers. To learn more about this method and its potential applications, please visit Prof. Tony Wang's website.