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Current Trends in Mass Spectrometry: July 2014

July 29, 2014

Click here to view the complete Wavelength newsletter from July 29, 2014.

A New Mass Spectrometry Method for Analyzing Complex Samples

July 15, 2014

This interview with Steven J. Ray, an Associate Scientist in the Department of Chemistry at Indiana University in Bloomington, Indiana, discusses his work with a new form of mass spectrometry (MS) for analyzing complex samples.

Analyzing Synthetic Cathinones Using Direct Sample Analysis Time-of-Flight Mass Spectrometry

July 1, 2014

Direct sample analysis coupled to high-resolution time-of-flight mass spectrometry (TOF-MS) may be effective at analyzing synthetic cathinones, especially for qualitative analysis, because it does not require potentially tedious sample preparation.

LC–MS Identification of Wax Esters in Cloudy Canola Oil

July 1, 2014

Canola largely contains unsaturated fatty acids, thus rendering it clear in most cases after extraction and refining.

Determination of Corrosion Inhibitor–Lubricity Improver in Jet Fuels by Liquid Chromatography–Electrospray Ionization Mass Spectrometry

July 1, 2014

Military jet fuel (JP-8) is very similar to commercial jet fuel (Jet A) except for the presence of three additives, fuel system icing inhibitor, corrosion inhibitor–lubricity improver (CI-LI), and antistatic additive, which are added to improve characteristics of JP-8.

Determination of 2-Hydroxy-4-(methylthio)butanoic Acid in Bovine Serum and Sea Water

July 1, 2014

Simple, sensitive, rapid, selective, and precise reversed-phase liquid chromatography (LC), electrospray ionization mass spectrometry (ESI-MS), and tandem MS (ESI-MS-MS) methods were developed and validated for the determination of 2-hydroxy-4-(methylthio)-butanoic acid (HMTBA) in bovine serum and sea water matrix. HMTBA is the ?-hydroxy analog of the sulfur-containing amino acid methionine and is extensively used as a methionine supplement in poultry and bovine feed.

A Convenient Alternative to MALDI and ESI

May 1, 2014

Ionization of small, large, volatile, and nonvolatile compounds with charge states nearly identical to electrospray ionization are produced from a solid matrix or solution with high sensitivity utilizing the vacuum inherent with any mass spectrometer. With the proper matrix, analytes can be analyzed from ambient conditions or by direct introduction into vacuum.

High-Resolution Native Mass Spectrometry Opens the Door for Detailed Analyses of Intact Protein Complexes

May 1, 2014

Native mass spectrometry, the method by which noncovalent protein complexes are retained in the gas phase for intact mass analysis, is gaining interest as a method for intact protein characterization. The development of a modified orbital ion trap platform for high-resolution analyses has expanded the role of native mass spectrometry to address the challenges of intact protein characterization.

Identifying "Known Unknowns" in Commercial Products by Mass Spectrometry

May 1, 2014

The identification of nontargeted species in environmental and commercial samples by mass spectrometry can be very difficult. In this article, authors from Eastman Chemical Company describe their systematic approach for the identification of nontargeted species using nominal and accurate mass data, searching both mass spectral and "spectra-less" databases. Features
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