Abstract − Analytical Sciences, 23(9), 1151 (2007).
Recent Comparability of Oceanographic Nutrients Data: Results of a 2003 Intercomparison Exercise Using Reference Materials
Michio AOYAMA,*1 Susan BECKER,*2 Minhan DAI,*3 Hideshi DAIMON,*4 Louis I. GORDON,*5 Hiromi KASAI,*6 Roger KEROUEL,*7 Nurit KRESS,*8 Doug MASTEN,*2 Akihiko MURATA,*9 Naoki NAGAI,*10 Hiroshi OGAWA,*11 Hidekazu OTA,*12 Hiroaki SAITO,*13 Kazuhiro SAITO,*14 Takao SHIMIZU,*15 Hiroyuki TAKANO,*16 Atsushi TSUDA,*6 Katsumi YOKOUCHI,*17 and Agnes YOUENOU*18
*1 Meteorological Research Institute, Japan Meteorological Agency, 1-1 Nagamine, Tsukuba 305-0052, Japan
*2 Scripps Institution of Oceanography, STS/ODF, 8855 Biological Grade 216 Isaacs Hall La Jolla, CA 92037, USA
*3 State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
*4 Kobe Marine Observatory, 1-4-3 Wakihamakaigandori, Chuo, Kobe 651-0073, Japan
*5 College of Oceanic and Atmospheric Sciences, Oregon State University, 104 Ocean Admin Bldg., Corvallis, OR 97331-5503, USA
*6 Hokkaido National Fisheries Research Institute, 116 Katsurakoi, Kushiro, Hokkaido 085-0802, Japan
*7 French Research Institute for Exploitation of the Sea (IFREMER) (Centre de Brest), BP 70, 29280 Plouzane, France
*8 Israel Oceanographic & Limnological Res., P. O. Box 8030, Tel Shikmona, 31080, Haifa, Israel
*9 Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan
*10 Marine Division, Climate and Marine Department, Japan Meteorological Agency, 1-3-4 Otemachi, Chiyoda, Tokyo 100-8122, Japan
*11 Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano, Tokyo 164-8639, Japan
*12 The General Environmental Technos Co., Ltd. (KANSO), 3-1-1 Higashikurazi, Katano, Osaka 576-0061, Japan
*13 Tohoku National Fisheries Research Institute, 3-27-5 Shinhama-cho, Shiogama, Miyagi 985-0001, Japan
*14 Hakodate Marine Observatory, 3-4-4 Mihara, Hakodate, Hokkaido 041-0806, Japan
*15 Nagasaki Marine Observatory, 11-51 Minamiote-machi, Nagasaki 850-0931, Japan
*16 Maizuru Marine Observatory, 901 Shimofukui, Maizuru, Kyoto 624-0946, Japan
*17 Seikai National Fisheries Research Institute, 3-30 Kokubu-machi, Nagasaki 850-0951, Japan
*18 French Research Institute for Exploitation of the Sea, IFREMER DEL/EC/PP, BP 70, 29280 Plouzane, France
*2 Scripps Institution of Oceanography, STS/ODF, 8855 Biological Grade 216 Isaacs Hall La Jolla, CA 92037, USA
*3 State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
*4 Kobe Marine Observatory, 1-4-3 Wakihamakaigandori, Chuo, Kobe 651-0073, Japan
*5 College of Oceanic and Atmospheric Sciences, Oregon State University, 104 Ocean Admin Bldg., Corvallis, OR 97331-5503, USA
*6 Hokkaido National Fisheries Research Institute, 116 Katsurakoi, Kushiro, Hokkaido 085-0802, Japan
*7 French Research Institute for Exploitation of the Sea (IFREMER) (Centre de Brest), BP 70, 29280 Plouzane, France
*8 Israel Oceanographic & Limnological Res., P. O. Box 8030, Tel Shikmona, 31080, Haifa, Israel
*9 Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan
*10 Marine Division, Climate and Marine Department, Japan Meteorological Agency, 1-3-4 Otemachi, Chiyoda, Tokyo 100-8122, Japan
*11 Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano, Tokyo 164-8639, Japan
*12 The General Environmental Technos Co., Ltd. (KANSO), 3-1-1 Higashikurazi, Katano, Osaka 576-0061, Japan
*13 Tohoku National Fisheries Research Institute, 3-27-5 Shinhama-cho, Shiogama, Miyagi 985-0001, Japan
*14 Hakodate Marine Observatory, 3-4-4 Mihara, Hakodate, Hokkaido 041-0806, Japan
*15 Nagasaki Marine Observatory, 11-51 Minamiote-machi, Nagasaki 850-0931, Japan
*16 Maizuru Marine Observatory, 901 Shimofukui, Maizuru, Kyoto 624-0946, Japan
*17 Seikai National Fisheries Research Institute, 3-30 Kokubu-machi, Nagasaki 850-0951, Japan
*18 French Research Institute for Exploitation of the Sea, IFREMER DEL/EC/PP, BP 70, 29280 Plouzane, France
An intercomparison exercise was conducted using the recently developed Reference Material for Nutrients in Seawater (RMNS). Discrepancies of reported values among laboratories were greater than the homogeneity of RMNS samples and the reported analytical precision of nutrients. The variability of in-house standards of the participating laboratories might be the most likely source of interlaboratory discrepancies. Therefore, the use of common reference materials, i.e. certified RM, is essential to establish and improve the comparability of nutrient data of the world's oceans.
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