About AOYAMA Michio
About Meteorological Res. Inst.
About OTA Hidekazu
About The General Environmental Technos Co., Ltd.
About KIMURA Munehito
About The General Environmental Technos Co., Ltd.
About KITAO Takashi
About The General Environmental Technos Co., Ltd.
About MITSUDA Hitoshi
About The General Environmental Technos Co., Ltd.
About MURATA Akihiko
About Japan Agency for Marine-Earth Sci. and Technol. (JAMSTEC)
About SATO Kenichro
About Marine Works Japan Ltd.
About Analytical Sciences
About sea water
About nutrient
About standard substance
About homogeneity
About stability
About nitrate
About silicate
About phosphate
About certified reference material
About deep sea
About Analytical reagents
About Geochemistry of hydrosphere and biosphere
About 栄養分
About 標準物質
About 均質性
About 安定性
About 現状