Ion Chromatography Separation of Alkali, Alkaline Earth, Transition, Post-transition, Lanthanide, and Actinide Metal Cations in Waste Sludge
Trace radionuclides are present in concentrations of only a few hundred disintegrations-per-minute-per-milliliter in high-level radioactive waste samples. These radionuclides can be separated and analyzed using liquid scintillation counting and inductively coupled plasma–mass spectrometry. The authors developed an ion chromatography method to separate 31 cations in a single chromatographic run. Their method uses a linear gradient, a step gradient, and isocratic elution using four eluents in four separate eluent phases. The separation requires 45 min and has detection limits ranging from 0.1 to 5.0 ppm using spectrophotometric detection for nonradiative cations. This article presents the applications, limitations, interferences, precision, and accuracy of the method.
LCGC 17(9), 842–852 (1999).
A Review of the Latest Separation Science Research in PFAS Analysis
October 17th 2024This review aims to provide a summary of the most current analytical techniques and their applications in per- and polyfluoroalkyl substances (PFAS) research, contributing to the ongoing efforts to monitor and mitigate PFAS contamination.
Systematic Evaluation of HILIC Stationary Phases for MS Characterization of Oligonucleotides
Hydrophilic interaction chromatography–mass spectrometry (HILIC-MS) offers a flexible and efficient alternative to ion-pairing reversed-phase liquid chromatography (IP-RPLC) for oligonucleotide analysis, with column selectivity and mobile phase pH being key factors in optimizing retention and detection.
