HPLC

Award presentations and plenary lectures were some of the attractions as the annual conference got underway on Sunday.

At HPLC 2023, Oliver Fiehn of the University of California explained results gathered from a device that can be used during daily digestion.

In a session on omics at HPLC 2023, Robert T. Kennedy of the University of Michigan revealed how scientists are taking advantage of new developments and cutting down on analysis time.

At HPLC 2023, Kelly Zhang gave a lecture on how machine learning can help further our understanding of the characterization of lipid nanoparticles.

At HPLC 2023, Matthias Pursch presented his findings on using UHPLC and SEC to monitor small molecule and polymer reactions in real time.

Fresh garlic and aged garlic, both brown and black, were all analyzed for their bioactives, in an attempt to expand those compounds’ applications as food ingredients and dietary supplements.

New method enables comprehensive analysis of secondary formation markers in ambient organic aerosols, providing valuable insights into atmospheric pollutants using HPLC–ESI-TOF-MS.

Samples of honey, chicken breast, and environmental water were analyzed for residue of nitroimidazoles, which are common antibiotics but can have detrimental effects on humans.

This article explores what this transition to newer technology looks like, with an example applied to determining organic impurities of pramipexole dihydrochloride.

Several factors strongly influence separation speed, including the pressure available to drive the separation, column temperature, particle size, and column length. Developing efficient methods to improve speed while not sacrificing accuracy require an understanding of the abovementioned variables and analysis time.

Nonspecific adsorption leads to poor peak shapes and poor performance from HPLC systems, but coating-enabling technologies can serve as a potential solution. We explain how.

What you need to know about pharmaceutical regulations as an analytical chemist is provided here, including an explanation about how working in a Good Manufacturing Practice (GMP) environment can yield positive results.

Are analytical chemists really operating sustainable laboratories, or are they being too quick in marketing their “green” laboratory credentials?

This study suggests a 2D-LC screening method to evaluate peak purity and ensure specificity in pharmaceutical analysis, thereby promoting the safe production of medicines by detecting active pharmaceutical ingredients (API) and related substances.

Nonspecific adsorption leads to poor peak shapes and poor performance from HPLC systems, but coating-enabling technologies can serve as a potential solution. We explain how.

Superficially porous particle (SPP) column technology is leveraged to optimize high-throughput HPLC methods for small-molecule drug discovery, resulting in improved efficiency and reduced runtime.

Researchers in Iran utilize graphene oxide aerogels to significantly improve the extraction and analysis of risperidone from plasma samples, offering enhanced accuracy and efficiency in pharmaceutical analysis.

A novel system combining hydrogel-modified human umbilical vein endothelial cell membrane chromatography with high-performance liquid chromatography-mass spectrometry revolutionizes the screening and purification of active ingredients in herbal medicines.

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

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.

The evolution of biomolecule analysis is discussed in this article.

The 51st International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2023) will be held at the Conference Center Düsseldorf (CCD) in Germany, from 18–22 June 2023.

A newly proposed concept in liquid chromatography (LC) positions spherical particles, either individually or stacked, in pockets forming microgrooves that act as perfectly aligned chromatographic columns.

A new study has identified potential quality-markers for Eucommiae Folium (Duzhongye), a traditional Chinese medicine, using UHPLC–MS/MS analysis, and has recommended isoquercitrin as a new quality-marker candidate.

Trace amounts of polychlorinated biphenyls (PCBs) in a river and lake in China were detected using a custom coating for stir bar sorptive extraction (SBSE) followed by high performance liquid chromatography with diode array detection (HPLC-DAD).

The reliability of column chromatography for GC–MS analysis of hopanes was tested in oil samples of three different types, using neutral alumina as a solid-phase adsorbent and a Pasteur pipette as a separation device.

Researchers have developed a new approach to extract chloramphenicol (CAP) from milk and chicken samples using magnetic nanofluid-based deep eutectic solvents (DES), which was combined with high performance liquid chromatography-ultraviolet (HPLC-UV) analysis. The method was found to be low-cost, green, efficient, and effective in detecting even trace amounts of CAP.

Scientists have developed a magnetic ionic liquid hypercrosslinked polymer composite for use in magnetic solid-phase extraction (MSPE) of non-steroidal anti-inflammatory drugs (NSAIDs), which was coupled with high-performance liquid chromatography (HPLC) for the detection of trace amounts of NSAIDs in water and urine samples.

This article compares the performance of wide-pore silica monolithic, sub-2µm FPP, and SPP columns, addresses the question of whether 1000 Å or 400 Å SPP columns are more suitable for reversed-phase LC-type protein separations, and presents a kinetic performance comparison of different columns.

A micro-pillar array format for mapping the proteome of human stem cell-derived liver organoids using timsTOF–MS is presented.