Search results
Results from the WOW.Com Content Network
Secondary electro-spray ionization (SESI) is an ambient ionization technique for the analysis of trace concentrations of vapors, where a nano-electrospray produces charging agents that collide with the analyte molecules directly in gas-phase. In the subsequent reaction, the charge is transferred and vapors get ionized, most molecules get ...
Secondary electrospray ionization (SESI) is an spray type, ambient ionization method where charging ions are produced by means of an electrospray. These ions then charge vapor molecules in the gas phase when colliding with them. [53] [54]
Schematic diagram of ion trap mass spectrometer with an electrospray ionization (ESI) source and Paul ion trap. A Paul trap is a type of quadrupole ion trap that uses static direct current (DC) and radio frequency (RF) oscillating electric fields to trap ions. Paul traps are commonly used as components of a mass spectrometer.
The two primary methods of ionization for mass analysis used in droplet-based microfluidics today are matrix-assisted laser desorption/ionization [241] [242] and electrospray ionization . [63] Additional methods for coupling, such as (but not limited to) surface acoustic wave nebulization ( SAWN ), [ 243 ] and paper-spray ionization onto ...
Electrospray is used in some air purifiers. Particulate suspended in air can be charged by aerosol electrospray, manipulated by an electric field, and collected on a grounded electrode. This approach minimizes the production of ozone which is common to other types of air purifiers.
Secondary electrospray ionization-high resolution mass spectrometry SESI-HRMS is a non-invasive analytical technique that allows us to monitor the yeast metabolic activities. SESI-HRMS has found around 300 metabolites in the yeast fermentation process, this suggests that a large number of glucose metabolites are not reported in the literature. [25]
An electrospray ionization (ESI) source is located above the sample for post-ablation ionization. [21] The jet of ablated material is intersected and ionized by a spray plume from the ESI source located above the sample. The ionized molecules are then swept into the mass spectrometer for analysis.
Desorption electrospray ionization (DESI) is an ambient ionization technique that can be coupled to mass spectrometry (MS) for chemical analysis of samples at atmospheric conditions. Coupled ionization sources-MS systems are popular in chemical analysis because the individual capabilities of various sources combined with different MS systems ...