Quantitative elemental analysis with the LMS-GT; a next-generation LIMS-TOF instrument

High Mass Resolution fs-LIMS Imaging and Manifold Learning Reveal Insight Into Chemical Diversity of the 1.88 Ga Gunflint Chert

“…In this contribution, we have used a newly developed highresolution fs-LIMS instrument (Wiesendanger et al, 2019;de Koning et al, 2021a;Gruchola et al, 2022) to chemically characterize the Gunflint chert sample (Barghoorn and Tyler, 1965;Alleon et al, 2017). The detailed description of instrument figures of merit and performance estimations on NIST standard materials has been recently reported.…”

“…An fs-Ti: Sapphire laser (775 nm, 180 fs, CPA Series, Clark-MXR Inc., Dexter, MI, United States) was used to ablate and ionize the material from the Gunflint chert. The fs-laser was coupled to the mass spectrometer-a time-of-flight instrument with high mass resolution (m/Δm = 10,000) (Wiesendanger et al, 2019;de Koning et al, 2021a). Within each of the probed locations, a sequence of five single-laser shot mass spectra was collected forming a 3D grid that consists of 100,000 mass spectra.…”

Reduction of surface charging effects in laser ablation ionisation mass spectrometry through gold coating

“…Even more so for the laboratory scale version of our LIMS instrument. 28,29 Especially, since the coating procedure itself is very fast (∼1 min for a 12 nm layer of gold). A future study to analyse in more detail how gold coating affects quantication would be of interest.…”

Measuring Pb, Th, and U inter-element ratios in geological materials using extreme ultraviolet laser ablation and ionization mass spectrometry

“…1 Laser ablation and laser ionization mass spectrometry (called either LAMS or LIMS) is another mass spectral mapping technique that uses a laser to ablate/remove the sample area and concomitantly form a plasma from which ions can be extracted. [20][21][22][23][24][25][26][27][28][29] LAMS/LIMS instruments are typically operated with time-of-ight (TOF) mass analyzers, which lack the accuracy and precision of sector-eld congurations but are easy to use with pulsed laser sources and offer a wide mass range. Depending on the laser wavelength and focusing optics used, LAMS/LIMS can achieve a lateral resolution of tens of microns 21,28 down to the nanoscale, [22][23][24][25][26] making it a suitable candidate for geological mapping analyses.…”