Carbon isotope composition of dissolved humic and fulvic acids in the Tokachi River system

Seiya Nagao1, Hiroki Kodama, Takafumi Aramaki

  • 1Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Wake, Nomi, Ishikawa 923-1224, Japan. nagao37@staff.kanazawa-u.ac.jp

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