negatively biased planar disk-shaped probe, positioned normal to the duct axis at a distance of 150 mm from the anode exit, monitored the ion saturation current, Ip.
We monitored the ion cluster around the m/z 256 (carbons 1-5 of ribose, chemical ionization) to find the molar enrichment and distribution of C labels in ribose.
We monitored the ion cluster around m/z 256 (carbons 1 5 of ribose; chemical ionisation (CI)) and m/z 217 (carbons 3 5 of ribose) and m/z 242 (carbons 1 4 of ribose; electron impact ionisation (EI)) to determine molar enrichment and the positional distribution of C in ribose.
Electrospray ionization (ESI) in positive ion mode and multiple reaction monitoring (MRM) were used to monitor the ion transitions at m/z 488/257, 474/403, 504/487, 434/377, 490/405, 476/391.
A system to monitor the ion mass and charge state as well as plasma potential value during plasma immersion ion implantation and deposition (PI3D) has been developed.
Electrospray ionization (ESI) in positive ion mode and multiple reactions monitoring (MRM) were used to monitor the ion transitions at m/z 636.4+ → 413.3+, 594.4+ → 494.4+, 622.5+ → 536.4+, respectively.
A quadrupole mass spectrometer and a total ion-current measuring device have been utilized to monitor the ion compositions of the gas mixtures of CH4/H2, CH4/Ar, CH4/H2/O2 and CH4/H2/N2 during the deposition process for quality control and process optimization.
In our own laboratory, we make use of a variant of this approach, applying a charge-pickup electrode in an electrostatic fast-ion beam trap to monitor the ion density oscillating in the trap and carry out Fourier-transform (FT) mass spectrometry on ensembles of molecular ions [26, 27].
Zhang studies the electrical response of the human embryonic kidney cell corresponding to external mechanic stimulation based on a robot-assisted AFM manipulation system and a patch-clamp system, which can monitor the ion transfer through the ion channels in the cell membrane [72].
In order to monitor the ion distribution migration the coating and to see if the formation of crystals on the surface corresponds to an ion diffusion in the coating, samples weathered for 1, 2, 3, and 4 weeks were analysed by means of ToF SIMS.
The TIC trace of the signature immonium ion of acetylated lysines at m/z 126.1 was also displayed to monitor the ion intensity for manually analyzing the MS/MS spectra of acetylated peptides, which could be missed by software search.
