Mass Spectrometry

Extraction of gasoline and its major aromatic groups was promising using a carbon nanotube-assisted solid-phase microextraction (CNT-SPME) fiber.

A cutting-edge technique combining droplet microfluidics and mass spectrometry revolutionizes monoclonal antibody screening, enabling rapid and high-throughput analysis while setting a new standard for efficient clone selection in biopharmaceutical development.

Automation and high-throughput MALDI mass spectrometry revolutionize peptide metabolic stability screening, allowing for rapid analysis of a large number of samples and minimizing solvent waste.

A new study introduces a comprehensive two-dimensional liquid chromatography coupled with tandem mass spectrometry (2D-LC–MS/MS) method for the analysis of 112 pesticides in corn-based products. The method exhibits high precision, lower limit of quantification values, and successful detection of trace levels of pesticides in real samples, offering promise for the analysis of complex matrices.

Scientists have developed a new method for predicting and assessing the source of black inks using direct analysis in real-time mass spectrometry. By applying dimensionality reduction techniques and likelihood ratio analysis, the researchers achieved high accuracy in identifying ink sources, demonstrating the potential of this approach in forensic ink analysis.

Metabolic Perturbation Score-Based Mass Spectrometry Imaging (MPS-MSI) offers spatially resolved insights into the functional metabolic response, facilitating a deeper understanding of disease progression and drug action, and paving the way for improved therapeutic strategies and targeted interventions.

Eighty drugs prohibited in athletic competition were analyzed, with seven samples returning adverse findings compared to previous methods.

Webinar Date/Time: Airing 1: Thursday June 15, 2023 at 10am EDT | 3pm BST | 4pm CEST Airing 2: Thursday June 15, 2023 at 1pm EDT | 12pm CDT | 10am PDT

The eggs of the yellow-legged gull and Audouin’s gull and the blood of the greater flamingo were studied to assess their exposure to perfluoroalkyl substances (PFAS) as bioindicators of chemical pollution.

A biomarker with significant clinical and analytical potential in an enzyme present in many human diseases was determined at higher efficiency using liquid chromatography coupled to tandem mass spectrometry (LC–MS/MS).

A research team has developed a novel method for assessing the volatility of individual components in complex organic aerosol mixtures using temperature-programmed desorption and high resolution mass spectrometry, offering insights into atmospheric pollutants.

A team of researchers have created an innovative analytical platform combining asymmetrical flow field-flow fractionation (AF4) with native mass spectrometry (nMS) to characterize non-covalent protein complexes, providing valuable insights into their stability and higher-order structures.

Researchers have developed a novel liquid chromatography–mass spectrometry method for analyzing sialic acid linkage in N-linked glycopeptides, offering insights into glycosylation patterns.

The liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) mass spectrometry (MS) technique showed potential to enhance protein sample acquisition rates.

We interviewed an AI program (ChatGPT) for LCGC North America asking questions about AI and its role in various applications for separation science to include data analysis, and high performance liquid chromatography (HPLC), hydrophilic-interaction chromatography (HILIC), reversed-phase liquid chromatography (RPLC), liquid chromatography–mass spectrometry (LC–MS), gas chromatography–mass spectrometry (GC–MS), high resolution mass spectrometry (HRIM–MS), high resolution tandem mass spectrometry (HRMS/MS), and related topics.

Webinar Date/Time: Thursday, June 1, 2023 at 11am EDT | 8am PDT | 4pm BST | 5pm CES

Scientists have developed an automatic and highly efficient method to authenticate single herbal powders using microscopy-guided in situ auto-sampling combined with matrix-assisted laser desorption–ionization mass spectrometry (MALDI–MS).

New statistical framework developed by researchers at the University of California in Riverside allows confident identification of isomeric molecules by mass spectrometry, even when no unique mass-to-charge peaks are generated between the isomeric pairs.

This month we interview Juan L. Benedé from the University of Valencia in Spain, about his work developing microextraction approaches, based on the use of sorbent materials, for application to complex matrices, and his focus on the determination of disease biomarkers in biofluids.

The evolution of biomolecule analysis is discussed in this article.

At Pittcon 2023, LCGC spoke with Jim Grinias of Rowan University. This segment is the full-length version of the interview that was conducted at the conference.

What parameters can influence an siRNA separation?

How to enhance the sensitivity, specificity, and speed of metabolite measurement using TIMS, which in turn helps to accelerate the pace of metabolomics research.

A team of researchers from the University of Barcelona has developed a new method for the selective extraction of monosaccharide anhydrides from sediment samples, which is crucial for their analysis.

How can low-resolution mass spectrometry (LRMS) and high-resolution (HR) MS work together to provide unambiguous results in clinical and forensic toxicology?

A new study reports the development a highly sensitive LC–MS/MS method to measure salivary melatonin levels. The method has a lower limit of the measuring interval of 0.8 pg/mL, making it the most sensitive method for quantifying melatonin in saliva.

A recent study has found that using only seven points across an LC–MS/MS peak can provide sufficient accuracy and precision for drug quantitation studies in drug discovery and development, challenging the "rule-of-thumb" of using at least 15 points.

A new article discusses the benefits and drawbacks of RPLC and RPLC×RPLC chromatography techniques. It provides recommendations for selecting the best approach for analyzing small pharmaceuticals and peptides.

A solid-phase microextraction (SPME) Arrow combined with comprehensive two-dimensional gas chromatography coupled to mass spectrometry (GC×GC–MS) identified about 40 more volatile compounds in a variety of whiskeys compared to conventional SPME.

Samples of the prefrontal cortex, striatum, and hippocampus of rats were analyzed by LC–MS to assess brain tissue response to combined consumption of ethanol and cocaine.