Initial performance metrics of a new custom-designed ArF excimer LA-ICPMS system coupled to a two-volume laser-ablation cell†
نویسندگان
چکیده
A new custom-built excimer (193 nm) laser-ablation system with two-volume laser-ablation cell coupled to a quadrupole ICPMS is described, which combines rapid (<1.5 s for 99%) signal washout with full flexibility in sample size (50 50 25 mm) and high sensitivity (>10000 cps/ppm for mid-high m/z, 55 mm, 5 Hz). An application of reconstructing medieval Pb exposure highlights the need for rapid signal washout in unravelling strongly varying Pb peaks in well-preserved archaeological tooth enamel.
منابع مشابه
Evaluation of the analytical capability of NIR femtosecond laser ablation-inductively coupled plasma mass spectrometry.
A laser ablation-inductively coupled plasma-mass spectrometric (LA-ICPMS) technique utilizing a titanium-sapphire (TiS) femtosecond laser (fs-laser) has been developed for elemental and isotopic analysis. The signal intensity profile, depth of the ablation pit and level of elemental fractionation were investigated in order to evaluate the analytical capability of the present fs-laser ablation-I...
متن کاملDetermination of phosphorus-, copper-, and zinc-containing human brain proteins by LA-ICPMS and MALDI-FTICR-MS.
Human brain proteins containing phosphorus, copper, and zinc were detected directly in protein spots in gels of a human brain sample after separation by two-dimensional gel electrophoresis using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). A powerful laser ablation system with cooled laser ablation chamber was coupled to a double-focusing sector field ICPMS. The separ...
متن کاملC . , Wacker , L . , Hattendorf , B . , Christl , M . , Fohlmeister , J . ,
20 A new instrumental setup, combining laser ablation (LA) with accelerator mass spectrometry (AMS), has 21 been investigated for the online radiocarbon (C) analysis of carbonate records. Samples were placed in 22 an in-house designed LA-cell and CO2 gas was produced by ablation using a 193 nm ArF excimer laser. The 23 C/C abundance ratio of the gas was then analyzed by gas ion source AMS. This...
متن کاملSpecies resolved analysis of the expansion of hydroxyapatite laser ablation plumes
The plume generated by ablation of hydroxyapatite targets under ArF excimer laser irradiation has been investigated by means of fast intensified charge coupled device (CCD) imaging and optical emission spectroscopy. Results have shown that the plume splits into two plasma clouds as it expands. Time and spatial resolved spectra have revealed that under the experiment conditions emission is mostl...
متن کاملSpeciation of chromium by high-performance thin-layer chromatography with direct determination by laser ablation inductively coupled plasma mass spectrometry.
It is of considerable importance to be able to distinguish metallic species because their toxicity depends on their chemical form. Therefore, the analysis of environmental samples can be enhanced by the combination of high-performance thin-layer chromatography (HPTLC) with laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). In this study, Cr (3+) and Cr (6+) were separated o...
متن کامل