Details zur Publikation |
Kategorie | Textpublikation |
Referenztyp | Zeitschriften |
DOI | 10.1016/S0584-8547(97)00051-7 |
Titel (primär) | Removal of water and hydrogen from graphite tubes investigated by electrothermal vaporization inductively coupled plasma mass spectrometry |
Autor | Grünke, K.; Stärk, H.-J.; Ortner, H.M. |
Journal / Serie | Spectrochimica Acta Part B: Atomic Spectroscopy |
Erscheinungsjahr | 1997 |
Department | ANA; SANA |
Band/Volume | 52 |
Heft | 9-10 |
Seite von | 1545 |
Seite bis | 1550 |
Sprache | englisch |
Keywords | Graphite furnace; Hydrogen; ICP-MS; Water |
Abstract | Inductively coupled plasma-mass spectroscopy (ICP-MS) detection can be applied to study fundamental processes in the graphite furnace. The retention and high-temperature release of water/hydrogen and carbon under various furnace heating conditions are described in this work. Different feasible monitor masses were studied and the signal for 36ArH+ (m/z = 37) is shown to be indicative of the amount of water present. The release of carbon was monitored by measuring the integrated signal at m/z = 13. In our study no water was found in the vaporization step using blank correction of a dry tube. However, we observed an 36ArH+ signal when the dry graphite tube was heated, even after up to 50 such heating cycles. This behavior was studied by monitoring the intensity of the 36ArH+ signal in long-term experiments with pyrolytic graphite-coated and uncoated tubes. The effect of release of water/hydrogen and carbon was significantly higher for the uncoated tubes. The source of the evolved hydrogen causing the 36ArH+ signal is supposed to be the graphite material of the tube. The influence of the effect on selected analyte ETV-ICP-MS signals (Al, V, Cu, Pb) is described in this study. |
dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9283 |
Grünke, K., Stärk, H.-J., Ortner, H.M. (1997): Removal of water and hydrogen from graphite tubes investigated by electrothermal vaporization inductively coupled plasma mass spectrometry Spectroc. Acta Pt. B-Atom. Spectr. 52 (9-10), 1545 - 1550 |