3He mass spectrometry for very low-level measurement of organic tritium in environmental samples

Jean-Baptiste, P.; Fourré, Élise; Dapoigny, Arnaud; Baumier, D.; Baglan, N.; Alanic, G.

doi:10.1016/j.jenvrad.2009.10.005

Cited by 60 publications

(15 citation statements)

References 20 publications

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“…When present, gas bubbles in water were also collected in the same way using an inverted funnel. Prior to 2000, He analyses were performed at LSCE-Saclay using a VG-3000 mass spectrometer (Jean-Baptiste et al, 1992) and on a MAP-215-50 mass spectrometer with simultaneous helium and neon isotope determination afterwards (Jean-Baptiste et al, 2010). Gas samples were directly connected to the high-vacuum inlet system of the mass spectrometer.…”

Section: Sampling and Methodsmentioning

confidence: 99%

Helium isotope systematics of volcanic gases and thermal waters of Guadeloupe Island, Lesser Antilles

Jean‐Baptiste

Allard

Fourré

et al. 2014

Journal of Volcanology and Geothermal Research

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The island of Guadeloupe is located in the middle of the 850 km long Lesser Antilles island arc. Present-day volcanic and geothermal activity is concentrated in two systems both located in the southwestern part of the island (Basse Terre): the La Soufrière volcanic complex and the Bouillante hydrothermal system, some 20 km to the northwest of the volcano. We report here the largest isotopic data set for helium isotopes in hydrothermal gases and waters from both systems, acquired between 1980 and 2012. 3 He/ 4 He ratios in the fumarolic gases of La Soufrière volcano have been quite homogeneous and stable over the last thirty years. The average ratio of 8.2 ± 0.2 R a confirms that the volcano is tapping a MORB-like mantle source. In contrast, the nearby Bouillante geothermal system displays a much lower 3 He/ 4 He ratio (4.5 ± 0.1 R a ). He-C elemental and isotopic relationships show that both systems are actually fed by the same magmatic source, and that their marked difference in 3 He/ 4 He results from the 4 He contamination of the Bouillante deep aquifer by the surrounding wallrock. This conclusion is strengthened by the spatial distribution of 3 He/ 4 He ratios which shows that La Soufrière fumaroles and the Bouillante geothermal system are the two end-members of a spatial trend of decreasing 3 He/ 4 He ratio with distance from La Soufrière summit dome, implying an increasing addition of radiogenic 4 He from the host rocks away from the present-day active volcanic edifice.

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Section: Sampling and Methodsmentioning

confidence: 99%

Helium isotope systematics of volcanic gases and thermal waters of Guadeloupe Island, Lesser Antilles

Jean‐Baptiste

Allard

Fourré

et al. 2014

Journal of Volcanology and Geothermal Research

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“…Через 9−15 месяцев -на спектрометрах MAP-215-50 (LSCE, CEA Сакле, Франция), Micromass' NG-5400, ВСЕГЕИ (Санкт-Петербург) и MИ 1201, ГИ КНЦ РАН (Апатиты) были измерены содержания и изотопные отношения благородных газов в тех же пробах. На спектрометрах MИ 1201 и MAP-215-50 измерялись изотопы 3 He, 4 He и 20 Ne [10,11], тогда как на спектрометре Micromass в дополнение к 3 He, 4 He и 20 Ne измерялись изотопы 36 Ar и 40 Ar.…”

Section: методы исследованияunclassified

Содержание И Изотопные Отношения Благородных Газов В Конжеляционном Льду Озера Восток

Четвериков¹,

Аруев²,

Булат³

et al. 2018

Журнал Технической Физики

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“…Pour une mesure par spectrométrie de masse, l'échantillon est placé dans un ballon en verre, préalablement purgé, puis scellé (Jean-Baptiste et al, 2010). Le ballon est ensuite stocké le temps nécessaire à l'obtention d'une quantité d'hélium-3 ( 3 He), par décroissance du tritium (T 1/2 = 12,312 ans), suffisante à la mesure.…”

Section: Calcul Des Teneurs En Tritium Par Spectrométrie De Masseunclassified

Métrologie du tritium dans différentes matrices : cas du tritium organiquement lié (TOL)

Baglan

Ansoborlo²,

Cossonnet³

et al. 2010

Radioprotection

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3He mass spectrometry for very low-level measurement of organic tritium in environmental samples

Cited by 60 publications

References 20 publications

Helium isotope systematics of volcanic gases and thermal waters of Guadeloupe Island, Lesser Antilles

Helium isotope systematics of volcanic gases and thermal waters of Guadeloupe Island, Lesser Antilles

Содержание И Изотопные Отношения Благородных Газов В Конжеляционном Льду Озера Восток

Métrologie du tritium dans différentes matrices : cas du tritium organiquement lié (TOL)

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