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  • Brian Seok, Detlev Helmig, Mark W. Williams, Daniel Liptzin, Kurt Chowanski, Jacques Hueber
  • Chemistry
  • 2009 (First Publication: 6 May 2009)
  • An experimental system for sampling trace gas fluxes through seasonal snowpack was deployed at a subalpine site near treeline at Niwot Ridge, Colorado. The sampling manifold was in place throughoutExpand
  • J. Pollmann, D. Helmig, J. Hueber, D. Tanner, P. Tans
  • Chemistry, Medicine
  • Journal of chromatography. A
  • 2006 (First Publication: 1 November 2006)
  • Nine commercial solid adsorbent materials (in order of decreasing surface area: Carboxen 1000, Carbosieve S III, molecular sieve 5A, molecular sieve 4A, silica gel, Carboxen 563, activated alumina,Expand