Results 231 to 240 of about 210,261 (363)

On-line size-exclusion chromatography/electrospray ionisation mass spectrometry of aquatic humic and fulvic acids [PDF]

open access: bronze, 2000
Linn Persson   +3 more
openalex   +1 more source

Building a Bridge Between Ambient MS and LC‐MS by Non‐Exhaustive Microdesorption

open access: yesAngewandte Chemie International Edition, Accepted Article.
Ambient mass spectrometry (AMS) offers rapid screening but faces challenges in analyzing complex samples due to high matrix effects and limited selectivity. The absence of a separation step can also lead to false positives due to the isomers or isobars.
Wei Zhou, Janusz Pawliszyn
wiley   +1 more source

Development of an Organoautocatalyzed Double σ‐Bond C(sp2)‐N Transamination Metathesis Reaction

open access: yesAngewandte Chemie International Edition, Accepted Article.
The transamination reaction, which involves the conversion of one amine to another, traditionally relies on biological enzyme catalysts. Although chemists have recently developed a few transition metal‐catalyzed methods, mimicking these enzymes to interconvert amine groups in acyclic substrates via transamination metathesis of a single C(sp2)–N bond ...
Volker Klein   +7 more
wiley   +1 more source

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