The study examines the impact of salinity on surface properties of freshwater Synechocystis sp. PCC6803, marine Synechococcus sp. PCC8806 and alkaliphilic Spirulina platensis. The differences in memb...

Driven by eutrophication and global warming, the occurrence and frequency of harmful cyanobacteria blooms (CyanoHABs) are increasing worldwide, posing…

Decade-long field measurements and modelling show that projected ocean temperatures could restrict cell division rates of an important marine cyanobacterium.

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Analytical ChemistryDOI: 10.1021/acs.analchem.5c02591

The exponential growth of untargeted metabolomics data, now reaching billions of mass spectra in public repositories, benefits from reannotation strategies for data reuse. While tandem mass spectromet...

Elucidating reaction mechanisms in heterogeneous catalysis demands real-time tracking of transient species at the solid–liquid interface. To address limitations in directly probing surface processes with conventional mass spectrometry (MS), this work develops an innovative “in-source reaction” strategy by integrating the reactor with the electrospray ionization (ESI) source. Diverse catalysts (e.g., g-C3N4, TiO2, zeolites, and Pd/C) were robustly immobilized within a glass probe (GP), integrating the microreactor and ionization source. This enables direct, subsecond resolution detection of species desorbing from catalytic surfaces. This strategy has been successfully verified by in-situ tracking of the photocatalytic degradation of Brilliant Green (BG) and other dyes. Over 40 intermediates in BG photocatalytic degradation were detected, with different evolution pathways revealing distinct mechanisms for g-C3N4 under visible light and TiO2 under UV light. Besides photocatalyst, typical solid catalysts were also immobilized on the inner wall of the GP to study the initial contact reactions of a β-O-4 model compound of lignin conversion. The obvious dehydrogenation of surface-adsorbed GGGE on Pd surface was observed by in-situ monitoring, while basic or amphoteric support surface spontaneously induced cyclization of GGGE, even without the input of external energy such as light and heat. This method provides a novel, extremely feasible, and sensitive strategy for tracking surface processes in liquid–solid heterogeneous catalytic reactions and holds promise for broader application to diverse catalytic reaction systems in the future.

Ingestion of bromide can lead to a toxidrome known as bromism. While this condition is less common than it was in the early 20th century, it remains important to describe the associated symptoms and r...

Data-independent acquisition (DIA) mass spectrometry facilitates high-throughput, reproducible bottom-up proteomic analyses. Typically, DIA methods coselect multiple precursor ions within a wide selec...