Calibration of the Submersible Ultraviolet Nitrate Analyzer (SUNA) by using Reference Material for Nutrients in Seawater (RMNS)

Hiroshi Uchida, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Tetsuichi Fujiki, JAMSTEC, Research Institute for Global Change, Yokosuka, Japan, Shigeto Nishino, Japan Agency for Marine-Earth Science and Technology, Yokosuku, Japan, Michio Aoyama, Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan, Tomomi Sone, Marine Works Japan, Japan and Akihiko Murata, Japan Agency for Marine-Earth Science and Technology, Research & Development Center for Global Change, Yokosuka, Japan