High-precision helium isotope measurements in air

Helium has two natural isotopes which have contrasted, and variable sources and sinks in the atmosphere ( 3 He/ 4 He air = 1.382 ± 0.005 × 10 −6 ). Variations in the atmospheric helium isotopic composition may exist below typical measurement precision thresholds (0.2 to 0.5%, 2 σ ). In order to inve...

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Veröffentlicht in:	Journal of analytical atomic spectrometry 2013-01, Vol.28 (12), p.193-191
Hauptverfasser:	Mabry, Jennifer, Lan, Tefang, Burnard, Pete, Marty, Bernard
Format:	Artikel
Sprache:	eng
Schlagworte:	Calibration Earth Sciences Error analysis Geochemistry Helium Helium isotopes Mathematical analysis Reproducibility Sciences of the Universe Spectrometry Standard error
Online-Zugang:	Volltext
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