Elimination of water interference in pulsed glow discharge time-of-flight mass spectrometry

Ганеев, А. А.; Gubal, Anna; Потапов, С.; Pogarev, S. E.; Sholupov, S. E.; Uskov, K. N.

doi:10.1134/s1061934813140050

Cited by 9 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22,[25][26][27] The use of pulsed discharge in combined hollow cathode allows sputtering of dielectric material; however, atomisation efficiency is to the great extent dependent on the formation of surface conducting layer and may vary considerably for the samples of different types. The design of the instrument and its analytical capabilities were previously discussed.…”

Section: Methodsmentioning

confidence: 99%

“…For the registration of both mass spectra high purity aluminium auxiliary cathode was used. According to Ganeev et al, 25 usage of auxiliary cathode made of tantalum enabled to decrease water and oxygen content in the discharge cell due to getter side reactions: Ta + O / TaO / cell wall (1); Ta + H 2 O / TaOH 2 / cell wall (2). At the same time, intensity of 238 U + for the metallic U and UO 2 are comparable.…”

Section: Methods Optimisationmentioning

confidence: 99%

“…Nevertheless, even for this range for admixture determination total intensity of U + + UO + should not be disregarded. According to Ganeev et al, 25 usage of auxiliary cathode made of tantalum enabled to decrease water and oxygen content in the discharge cell due to getter side reactions: Ta + O / TaO / cell wall (1); Ta + H 2 O / TaOH 2 / cell wall (2).…”

Section: Methods Optimisationmentioning

confidence: 99%

“…The design of the instrument and its analytical capabilities were previously discussed. 22,[25][26][27] The use of pulsed discharge in combined hollow cathode allows sputtering of dielectric material; however, atomisation efficiency is to the great extent dependent on the formation of surface conducting layer and may vary considerably for the samples of different types. 21 So, in such cases, instrument calibration is of paramount importance.…”

Section: Instrumentationmentioning

confidence: 99%

See 3 more Smart Citations

Direct determination of uranium and thorium in minerals by time-of-flight mass spectrometry with pulsed glow discharge

et al. 2015

View full text Add to dashboard Cite

A direct method of uranium and thorium determination in non-conducting geological samples using timeof-flight mass spectrometry with pulsed glow discharge was proposed. The following rock specimens were analysed: metamict zircon, metamict rinkite, metamict samarskite (Y-Fe-niobate), pyrochlore and jacinth.For sample sputtering a combined hollow cathode cell of high purity aluminium or tantalum hollow cathodes was used. Powdered or monolith samples were pressed into the surface of the powdered metal prior to analysis. Model samples (artificial mixtures of oxides) were proposed for calibration; additionally, relative sensitivity factors, internal standardisation and standard additions were employed.For validation, IAEA artificially prepared uranium ore reference material was analysed. For additional validation, the obtained results for real mineral samples were compared to the results of inductively coupled plasma optical emission spectrometry after sample dissolution and semi-quantitative data of energy dispersive X-ray spectrometry. Limits of detection (3s) for the designed method were 0.3 ppm for uranium and 0.5 ppm for thorium, which is comparable to laser ablation inductively coupled plasma mass spectrometry. The method was also tested for capability to measure isotope ratios for lead and uranium without specific isotope calibration. Acquired isotopic ratios of uranium and lead corresponded to their natural abundances within the experimental error.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methods Optimisationmentioning

confidence: 99%

Section: Methods Optimisationmentioning

confidence: 99%

Section: Instrumentationmentioning

confidence: 99%

See 2 more Smart Citations

Direct determination of uranium and thorium in minerals by time-of-flight mass spectrometry with pulsed glow discharge

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The sample movement in GD-MS systems has been previously described, however, until now it has only been used for exchanging analysed samples. 25 In a way, in the solution cathode glow discharge analysis, the sample is also moving, since the analysed liquid is in a continuous ow relative to the stationary anode. 26 Until now, the depth prole analysis in GD-MS has only been performed using stationary samples.…”

Section: Introductionmentioning

confidence: 99%