Simultaneous Acquisition of Elemental, Fragmental, and Molecular Information on Organometallic Compounds

Yu, Quan; Li, Lingfeng; Hang, Wei; He, Jian; Huang, Benli

doi:10.1021/ac1033209

Cited by 10 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They reported several examples of LIMS analysis of solid organic compounds performed with minimal sample preparation. Study of two low molecular weight metalloorganic compounds (benzoylferrocene and nickel acetylacetonate), which were pressed into solid discs and then ionized, demonstrated the possibility to influence the ionization and fragmentation processes by the adjustment of the buffer gas (He) pressure (Yu et al, 2011). The authors reported that at lower buffer gas pressures of 50-100 Pa intact molecules and relatively low fragmentation were observed in MS spectra, whereas the increase of the pressure led to more extensive fragmentation and, finally, only heavy metal ions (Fe + and Ni + , respectively) were detected in MS spectra at pressures of 1000-1500 Pa.…”

Section: Use Of Lims In Analysis Of Organic and Biological Samplesmentioning

confidence: 99%

“…Because of that, they cannot ionize the molecules desorbed from the surface by the thermal diffusion, and only small fragment ions are observed in the MS spectra. In the case of metalloorganic compounds these were exclusively heavy metal ions (Yin et al 2014b(Yin et al , 2014aYu et al, 2011). At low buffer gas pressures, electrons, protons, and ions have much longer mean free paths leading to numerous collisions with thermaldesorbed molecules, from which parent radicals are generated.…”

Section: Use Of Lims In Analysis Of Organic and Biological Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

Azov

Mueller

Makarov

2020

Mass Spectrometry Reviews

View full text Add to dashboard Cite

Laser ionization mass spectrometry (LIMS) was one of the first practical methods developed for in situ analysis of the surfaces of solid samples. This review will encompass several aspects related to this analytical method. First, we will discuss the process of laser ionization, the influence of the laser type on its performance, and imaging capabilities of this method. In the second chapter, we will follow the historic development of LIMS instrumentation. After a brief overview of the first-generation instruments developed in 1960-1990 years, we will discuss in detail more recent designs, which appeared during the last 2-3 decades. In the last part of our review, we will cover the recent applications of LIMS for surface analysis. These applications include various types of analyses of solid inorganic, organic, and heterogeneous samples, often in combination with depth profiling and imaging capability.

show abstract

Section: Use Of Lims In Analysis Of Organic and Biological Samplesmentioning

confidence: 99%

Section: Use Of Lims In Analysis Of Organic and Biological Samplesmentioning

confidence: 99%

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

Azov

Mueller

Makarov

2020

Mass Spectrometry Reviews

View full text Add to dashboard Cite

show abstract

“…Laser ionization mass spectrometry is an increasingly popular method of elemental and isotopic analysis, and a number of reviews were recently published. [1][2][3] Several advantages of laser ionization time-of-flight mass spectrometry allow one to apply the method for semiquantitative multielemental analysis of both organic and unorganic samples. [4][5][6][7][8] Modeling of mass analyzers is the first stage of timeof-flight mass spectrometers design process.…”

Section: Introductionmentioning

confidence: 99%

A computer model of comprehensive modeling of the laser time-of-flight analyzer

Карпов

Сысоев

2017

Eur J Mass Spectrom (Chichester)

View full text Add to dashboard Cite

This article offers a new approach to computer modeling of time-of-flight analyzers of mass spectrometers. The main feature of the model is comprehensive tracking of the processes from the laser plasma generation until the final stage, on which the isotopic or elemental composition is determined for the analyzed solid sample. Apart from usual models based on SIMION-8 3D or similar software, this article proposes fundamentally new modeling stages. These stages are (1) generation and spread of laser plasma, (2) formation of the ion packages, (3) ion detection, and (4) formation and processing of the analytical signals. In order to provide consistent modeling of all the stages, special software units were developed. Program control of the analyzer ion optics (electrodes voltages) allows scan of mass spectra by ion energy. Additional complex of the programs provides simulation of mass spectra digitization, summation of digitized mass spectra for a wide range of variable parameters, and consideration of the discriminatory effects. According to the data, the software calculates ion-optical characteristics of the analyzer and the analytical parameters of measurement results.

show abstract

“…Laser ionization orthogonal TOF mass spectrometry was applied to simultaneous determination of nonmetallic elements in solids, 35 semi-quantitative multielement analysis of biological samples, 36 the elemental analysis of residues, which were prepared by evaporating mixed salt solutions, 37 obtaining elemental, fragmental, and molecular information of organometallic compounds, 38 and semi-quantitative analysis of geological samples. 39 Femtosecond laser ablation TOF mass spectrometry was shown to be very efficient in direct sampling elemental analysis of solids.…”

Section: Introductionmentioning

confidence: 99%

Novel approach to constructing laser ionization elemental time-of-flight mass spectrometer

Карпов

Milyaeva

Сысоев

2017

Eur J Mass Spectrom (Chichester)

View full text Add to dashboard Cite

The main advantages of laser sampling are associated with following features: sample preparations as well as consumables are not needed, low risk of sample contamination, good spatial resolution. In mass spectrometry, high laser irradiance can be used for both ablation and ionization processes. The method is especially profitable in time-of-flight mass spectrometry. A new principle of constructing laser ionization time-of-flight mass spectrometer based on wedge-shaped ion mirrors and the absence of electrostatic ion acceleration before mass analysis is discussed. Among advantages of the analyzer there are ability to provide temporal focusing of ions in a wide energy range (±20%), compactness of the analyzer, and minimization of the requirements for power supplies. The approach is expected to be profitable for standardless elemental analysis of solid samples, which should be possible at laser irradiation power density more than 3 × 10W/cm that ensures complete ionization of all elements in a laser plasma. The analytical signal of each element is formed as the sum of the signals for all charge states and the energy scan of the mass spectra is provided.

show abstract

Simultaneous Acquisition of Elemental, Fragmental, and Molecular Information on Organometallic Compounds

Cited by 10 publications

References 25 publications

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

A computer model of comprehensive modeling of the laser time-of-flight analyzer

Novel approach to constructing laser ionization elemental time-of-flight mass spectrometer

Contact Info

Product

Resources

About