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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
Published for geochemistry community from Geochemical Society of Japan.
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Development of an in situ sampler of submarine springs for the analysis of CFCs and SF6

KAZUYOSHI ASAI, JING ZHANG, KAZUMI ASAI, KATSURO MOGI, WILSON YETOH FANTONG, AJIT KUMAR MANDAL
Geochemical Journal, Vol. 47, No. , P. 693-696, 2013

ABSTRACT

The design and operation of an in situ contamination-free sampler of submarine spring water for CFCs and SF6 analysis are described. The sampler consists of three parts: inlet, water pump, and sample bottle housing; all made from CFC and SF6 free materials. Samples from a submarine freshwater spring, discharging along the southwest coast of Rishiri Island, Japan, had CFC and SF6 ages of 1960–1970, which is consistent with previously reported 3H ages. This suggests suitability of the sampler for sampling submarine springs without atmospheric and seawater contamination. Moreover, the device is suitable for the collection of water samples for assessment of geochemical tracers, such as major dissolved gases, isotopes, and inorganic solutes.

KEYWORDS

sampler, submarine spring, CFCs, SF6, Rishiri Island, groundwater age

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