Chemi-ionization reactions involve the formation of ionic products through the transfer of electrons during collisions between excited and ground-state species. These processes, which can occur in ...

The Vocus Flex incorporates interchangeable, drawer-style ion source modules that enable rapid switching between the VUV-based Vocus PTR Reactor and the fragmentation-free Vocus Aim Reactor. Automatic ...

Chemical ionization mass spectrometers accurately evaluate VOCs in a wide range of environments. The analysis becomes ambiguous when a compound is obscured by either isomeric or isobaric interference.

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...