April 12th 2024
Here are the top five articles that the editors of Spectroscopy published this week.
Toward Quantitative Imaging Mass Spectrometry
The main limitations of quantification using MALDI imaging are discussed and the different approaches used for quantitative measurement in MSI are evaluated.
Direct Insertion Probe – Mass Spectrometry (DIP-MS) in the Characterization of Opportunity Crudes
July 1st 2012DIP–MS is a fast and easy tool that can identify classes of compounds in opportunity crudes (heavy and ultraheavy crude oils, asphaltenes, and tar sands) in the field, without prior separation or treatment. It may enable fast screening of real samples to make a rough evaluation of the potential of reservoirs and oil fields.
Identification of Novel Psychoactive Substances Using Hyphenated Mass Spectrometric Techniques
March 1st 2012Gas chromatography–mass spectrometry (GC–MS) and liquid chromatography–mass spectrometry (LC–MS) techniques offer advantages in separating and confirming the identity of constituents in novel psychoactive substances.
Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue Analysis
A summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
25-Hydroxyvitamin D2/D3 Analysis in Human Plasma Using LC–MS
March 1st 2011Increases in vitamin D testing frequency have required more rapid and cost-effective solutions for determining vitamin D levels in plasma. This LC–MS method was adapted for use with core-shell columns to achieve run times of less than 4 min.
Mass Spectrometry Advances Fossilomics
March 1st 2011Fossilomics uses MS to extract amino acid sequence information from subpicomole quantities of protein and peptide fragments that remain in certain fossil samples. The sequences are compared to databases and validated with search statistics and high-confidence sequences. The validated sequences can then be used to place the fossils on the evolutionary tree.