Laser Ionization Mass Spectrometry of Inorganic Ions

Detection and imaging of chrome yellow (lead chromate) in latent prints, solid residues, and minerals by laser‐desorption/ionization mass spectrometry (LDI‐MS)

“…The mass scale of the instrument was calibrated prior to analysis using red phosphorus. Red phosphorus is a convenient calibrant because it is a stable, inert, and monoisotopic linear polymer that gives a wide range of reproducible signals in both the positive and the negative mode under LDI conditions . Full‐scale mass spectra were acquired manually over a period of 60 s. For MS/MS experiments, samples were deposited as aqueous suspensions (1 μl) on a stainless‐steel MALDI target plate (55 mm × 40 mm); after the solvent was evaporated, the plate was placed in the mass spectrometer and irradiated.…”

“…Current methods used for lead detection include flame atomic absorption spectroscopy, graphite‐furnace atomic absorption spectroscopy and inductively coupled plasma atomic absorption spectroscopy (ICP‐AAS), anode‐stripping voltammetry, X‐ray fluorescence spectrometry, laser‐ablation inductively coupled plasma mass spectrometry, and matrix‐assisted laser desorption/ionization mass spectrometry (MALDI) . In fact, direct laser desorption/ionization coupled with time‐of‐flight mass spectrometry has been a very successful technique for the investigation of lead and chromium, as well as numerous other chemical elements . Laser desorption/ionization mass spectrometry (LDI‐MS) allows not only for elemental analysis but also for the chemical speciation of compounds …”

“…[9,10] In fact, direct laser desorption/ionization coupled with time-of-flight mass spectrometry has been a very successful technique for the investigation of lead [11][12][13] and chromium, [12,[14][15][16][17][18] as well as numerous other chemical elements. [19][20][21][22] Laser desorption/ionization mass spectrometry (LDI-MS) allows not only for elemental analysis but also for the chemical speciation of compounds. [11][12][13][14][15][16][17][18][19][20][23][24][25][26][27][28][29][30][31] Mass spectrometry imaging is a field of research that has received significant attention in recent years.…”

“…[19][20][21][22] Laser desorption/ionization mass spectrometry (LDI-MS) allows not only for elemental analysis but also for the chemical speciation of compounds. [11][12][13][14][15][16][17][18][19][20][23][24][25][26][27][28][29][30][31] Mass spectrometry imaging is a field of research that has received significant attention in recent years. [32] By this method, numerous biological samples have been imaged to reveal distribution patterns of a few chemical elements of biological significance found in cells and tissues.…”

Enhancement of laser desorption ionization mass spectrometric signals of cesium iodide by elemental sulfur

“…Laser Desorption Ionization Mass Spectrometry (LDI‐MS) is a successful technique for studying biological macromolecules, polymers, and polar organic molecules. However, LDI applications in inorganic and organometallic chemistry are only just beginning to emerge . The discussions in most books dedicated to inorganic mass spectrometry are essentially limited to applications of Inductively Coupled Plasma Mass Spectrometry (ICP‐MS) for elemental analysis .…”