RF-pulsed glow discharge time-of-flight mass spectrometry for glass analysis: Investigation of the ion source design

Bouza, Marcos; Fernández, Beatriz; González-Gago, Cristina; Bordel, Nerea; Pereiro, Rosario; Sanz‐Medel, Alfredo

doi:10.1016/j.aca.2012.10.017

Cited by 12 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Ti isotope of higher abundance is 48 Ti (73.72%) but 15 In the legend of the figure "maximum" means that the measurement has been made at the maximum position of the afterglow, "complete" that the whole afterglow was used for measurement, "beginning" at the earlier part of the afterglow, "final" at the later part of the afterglow, and "2. can be overcome with the UNIOVI GD source conguration when measured in the region of the aerglow maximum. 18 As shown in Fig. 2b, two different peaks corresponding to the analyte and the polyatomic interferences can be clearly observed in the mass spectra at m/z 28 when used for measurement the proper GD pulse interval.…”

Section: Interference Removal Studiesmentioning

confidence: 85%

Pulsed radiofrequency glow discharge time of flight mass spectrometry for coated glass analysis

Bouza

Pereiro

Bordel

et al. 2015

J. Anal. At. Spectrom.

Self Cite

View full text Add to dashboard Cite

The analytical potential of radiofrequency pulsed glow discharge time of flight mass spectrometry (rf-PGDToFMS) is investigated for quantitative depth profiling analysis of glasses and thin conductive and nonconductive layers on glasses. PGD in combination with ToFMS can allow the reduction or even removal of spectral interferences by selecting a proper GD pulse interval. Thus, discrimination of potential polyatomic interferences for several analytes (e.g., 28 Si + , 39 K + , 44 Ca + , and 48 Ti + ) was investigated by selecting appropriate time positions along the GD pulse profile. In this paper, the determination of compositional depth profiles of coated glasses was performed by resorting to a multi-matrix calibration procedure. For this purpose, conductive as well as non-conductive certified reference materials were employed to build the analytical calibration curves. Results show that rf-PGD-ToFMS allows us to discriminate the different layers of the samples and the nominal values for element concentrations and layer thicknesses were in agreement with experimental results obtained using the proposed quantification strategy. Moreover, the capability of rf-PGD-ToFMS to provide a full mass spectrum every 33 ms enable the identification of unexpected elements which can be present as contaminants in very thin layers (e.g. Cd, Sn, Te and Sb).

show abstract

Section: Interference Removal Studiesmentioning

confidence: 85%

Pulsed radiofrequency glow discharge time of flight mass spectrometry for coated glass analysis

Bouza

Pereiro

Bordel

et al. 2015

J. Anal. At. Spectrom.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Two designs of PGD ion sources have been evaluated for the gas compounds analysis in this work. The ion sources, named GD.1 and UniOvi GD, were described and successfully used for direct solid analysis in previous works . In short, GD.1 source is a copper‐based modified Grimm‐type chamber with a 4‐mm‐diameter anode and 15.5‐mm thickness.…”

Section: Methodsmentioning

confidence: 99%

“…The ion sources, named GD.1 and UniOvi GD, were described [19] and successfully used for direct solid analysis in previous works. [20] In short, GD.1 source is a copperbased modified Grimm-type chamber with a 4-mm-diameter anode and 15.5-mm thickness. Moreover, it includes a flow tube of 2.5-mm inner diameter (EMPA, Switzerland).…”

Section: Pulsed Glow Discharge-time Of Flight Mass Spectrometry Instrmentioning

confidence: 99%

Volatile organic compound analysis by pulsed glow discharge time of flight mass spectrometry as a structural elucidation tool

et al. 2017

Self Cite

View full text Add to dashboard Cite

Pulsed glow discharge (PGD) coupled to time of flight mass spectrometry (TOFMS) has been investigated for volatile organic compound (VOC) identification and determination. Optimization of PGD operational conditions (chamber design, applied power, pressure and duty cycle) was performed using acetone and benzene as model compounds. During the different optimizations, molecular, fragment and elemental information were obtained when characteristic GD pulse regions were measured. An exploratory study for several VOCs (lineal hydrocarbons, oxygen-containing compounds and aromatic compounds) revealed the capability of the PGD to provide crucial information to elucidate structures (fragments), molecular ions or even proton affinity nature of the molecules; this last information is a consequence of the enriched proton environment generated along the afterglow region for the ionization chamber used. Analytical characteristics were evaluated with solid phase microextraction-gas chromatography coupled to PGD-TOFMS for special aromatic hydrocarbons (benzene, toluene, ethylbenzene, xylene: BTEX) in water, showing a good performance in terms of reproducibility and sensitivity. Copyright © 2017 John Wiley & Sons, Ltd.

show abstract

“…The GD chamber is made of copper and its design is similar to those used in the commercial GD-OES instruments from Horiba Jobin Yvon, with a 4 mm diameter anode and 15.5 mm thickness. A flow tube with 2.5 mm inner diameter is inserted from the back of the anode to face the gas flow towards the cathode surface [23]. Such discharge chamber is compatible with an argon pre-chamber that has been used in our experiments [10,24].…”

Section: Instrumentationmentioning

confidence: 99%

“…It has been previously shown that maximum signals for sputtered analytes are obtained in the afterglow region. However, the maximum and the shape of the analytical signal depend on the element [23]. On the other hand, although polyatomics attributable to recombination processes in the GD dynamic plasma are typically produced at the end of the afterglow region, the exact shape depends on the particular polyatomic.…”

mentioning

confidence: 99%

Depth Profile Analysis of Amorphous Silicon Thin Film Solar Cells by Pulsed Radiofrequency Glow Discharge Time of Flight Mass Spectrometry

Alvarez-Toral

Sánchez²,

Menéndez³

et al. 2014

J. Am. Soc. Mass Spectrom.

Self Cite

View full text Add to dashboard Cite

Abstract. Among the different solar cell technologies, amorphous silicon (a-Si:H) thin film solar cells (TFSCs) are today very promising and, so, TFSCs analytical characterization for quality control issues is increasingly demanding. In this line, depth profile analysis of a-Si:H TFSCs on steel substrate has been investigated by using pulsed radiofrequency glow discharge-time of flight mass spectrometry (rf-PGD-TOFMS ) appropriate time positions along the GD pulse profile were selected. A multi-matrix calibration approach, using homogeneous certified reference materials without hydrogen as well as coated laboratory-made standards containing hydrogen, was employed for the methodological calibration. Different calibration strategies (in terms of time interval selection on the pulse profile within the afterglow region) have been compared, searching for optimal calibration graphs correlation. Results showed that reliable and fast quantitative depth profile analysis of a-Si:H TFSCs by rf-PGD-TOFMS can be achieved.

show abstract

RF-pulsed glow discharge time-of-flight mass spectrometry for glass analysis: Investigation of the ion source design

Cited by 12 publications

References 20 publications

Pulsed radiofrequency glow discharge time of flight mass spectrometry for coated glass analysis

Pulsed radiofrequency glow discharge time of flight mass spectrometry for coated glass analysis

Volatile organic compound analysis by pulsed glow discharge time of flight mass spectrometry as a structural elucidation tool

Depth Profile Analysis of Amorphous Silicon Thin Film Solar Cells by Pulsed Radiofrequency Glow Discharge Time of Flight Mass Spectrometry

Contact Info

Product

Resources

About