We discuss mini MS systems in terms of individual components and at a systems level.
Portable systems from academic and commercial laboratories are emphasized, but meso …

Cholesterol is an important lipid molecule in cell membranes and lipoproteins. Cholesterol is
also a precursors of steroid hormones, bile acids, and vitamin D. Abnormal levels of …

Ion sources for molecular mass spectrometry are usually driven by direct current power
supplies with no user control over the total charges generated. Here, we show that the …

Molecular catalysis of water oxidation has been intensively investigated, but its mechanism
is still not yet fully understood. This study aims at capturing and identifying key short-lived …

Ambient electrostatic paper spray ionization from a hydrophobic paper occurs when a DC
potential is applied to the dry paper triangle. Online liquid/liquid extraction of small organic …

The lithium–sulfur (Li–S) battery is one of the most promising next generation energy
storage systems due to its high theoretical specific energy. However, the shuttle effect of …

In recent years, different geometrical configurations of solid-phase microextraction (SPME)
have been directly coupled to mass spectrometry, resulting in benefits such as diminishing …

Herein we report the development of solid‐phase microextraction (SPME) devices designed
to perform fast extraction/enrichment of target analytes present in small volumes of complex …

In recent years, the direct coupling of solid phase microextraction (SPME) and mass
spectrometry (MS) has shown its great potential to improve limits of quantitation, accelerate …

Integral to advances in mass spectrometry (MS) are developments in ionization technology,
which is constantly evolving because of advances in fundamental understanding …