A New Dry Extraction System for Gases in Ice
نویسنده
چکیده
A new extraclion system has been designed and constructed which allows the extraction of gases from air bubbles in ice without melting it. The ice sample of abollt 500 g is crushed in an evacuated container by a milling cutter, and the gas escaping from the opened bubbles is collected by condensation at 15 K. Results of CO 2 analyses of extracted gases a re discussed with respcCI to possible contamination risks by the system. RESUME. Un nOUlleau systeme d)exlractioTl a sec des ga<. COlllenus dalls la glace. Un nouv~au systemc d1extraction a ete Ctudie et realise qui permct I'extraction des gaz a partir des bulles contcnues dans la glace sans la fond re . L'cchantillon de glace pesant environ 500 g est de-coupe dans line encein te sous \·idc par fraisage et le gaz s'echappant des bulles est recueilli par
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