Simeon Schum

TL;DR: In this paper, high-resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization and the upward trend in HRMS analysis of DOM presents challenges in data comparison.

TL;DR: MFAssignR contains functions that perform noise estimation, 13C and 34S polyisotopic mass filtering, mass measurement recalibration, and molecular formula assignment as part of a consistent data processing environment and is well-suited for the consistent and efficient analysis of environmental complex mixtures.

TL;DR: In this article, the molecular and physical characteristics of free tropospheric aerosol were analyzed at the Pico Mountain Observatory in the North Atlantic by using high-resolution Fourier transform ion cyclotron resonance mass spectrometers.

TL;DR: In this article, the physicochemical characteristics of ice nucleating particles (INPs) were examined using optical and electron microscopy, showing substantial differences in particle composition between samples from the four events; in addition, single-particle microscopy analysis indicates that most particles are coated by organic material.

TL;DR: Ion chromatography is a suitable method for the measurement of cations and anions, including acetate from various physiological samples, and validation of the ion chromatography method was established by comparing chloride concentration between ion Chromatography with a known method using an ion selective chloride electrode.