Performance and Blank Components of a Mass Spectrometric System for Routine Measurement of Helium Isotopes and Tritium by the 3He Ingrowth Method - Vorgelegt in der Sitzung vom 1. Juli 1989 von Otto Haxel

For future studies of oceanic circulation it is necessary to develop the tritium measurement via 3He ingrowth into a routine procedure with a high capacity for efficient use. This paper attempts to demonstrate that this can be achieved using a commercial helium isotope mass spectrometer and special procedures for sample preparation, storage for 3He ingrowth, and 3He transfer from the ingrowth containers into the mass spectrometer. This method allows for measurement with a much higher precision and lower detection limit than is possible with counting techniques. Additionally, the parameters and blanks in routine operation of the system are discussed.

Sommario

1 Introduction.- 2 General Procedure.- 3 System Configuration.- 3.1 Gas Extraction Units.- 3.2 Inlet System.- 3.3 Mass Spectrometer.- 3.4 Computer Control.- 4 System and Handling Details.- 4.1 Gas Extraction Systems.- 4.2 Inlet System.- 4.3. Mass Spectrometer.- 4.4 Measurement of the 3He/4He Ratio.- 4.5 Tritium Measurement.- 5 Blanks.- 5.1 Helium Measurement.- 5.2 Tritium Measurement.- 6 'Ultra Low Level' Tritium Measurements.- 7 Intercalibration.- Acknowledgements.- References.

Riassunto

For future studies of oceanic circulation it is necessary to develop the tritium measurement via 3He ingrowth into a routine procedure with a high capacity for efficient use. This paper attempts to demonstrate that this can be achieved using a commercial helium isotope mass spectrometer and special procedures for sample preparation, storage for 3He ingrowth, and 3He transfer from the ingrowth containers into the mass spectrometer. This method allows for measurement with a much higher precision and lower detection limit than is possible with counting techniques. Additionally, the parameters and blanks in routine operation of the system are discussed.

Dettagli sul prodotto

• Autori: Reinhol Bayer, Reinhold Bayer, Gerhard Bönisch, Hans Rupp, Pete Schlosser, Peter Schlosser, Fritz Zaucker, Gerhard Zimmek
• Editore: Springer, Berlin
• Lingue: Inglese
• Formato: Tascabile
• Pubblicazione: 02.12.2013
• EAN: 9783540517108
• ISBN: 978-3-540-51710-8
• Pagine: 44
• Dimensioni: 165 mm x 242 mm x 3 mm
• Peso: 117 g
• Illustrazioni: 44 p. 13 illus.
• Serie: Sitzungsberichte der Heidelberger Akademie der Wissenschaften / Sitzungsber.Heidelberg 89; Sitzungsberichte der Heidelberger Akademie der Wissenschaften; Sitzungsberichte der Heidelberger Akademie der Wissenschaften / Sitzungsber.Heidelberg 89; Sitzungsber.Heidelberg 89
• Categorie: Scienze naturali, medicina, informatica, tecnica > Geoscienze > Geologia; C, Ozeanographie (Meereskunde), Meere und Ozeane, Earth and Environmental Science, Mineralogy, Oceanography, Ocean Sciences, Oceanography (seas), oceanic circulation