SUZUKI, YASUI, KOIZUMI, TSUTSUMI, 1987. Hydrochloric acid extraction procedure for determination of inorganic components in food and its related materials. Part III Application for determination of metal elements in soybean, green soybean and roasted soybean flour by atomic absorption spectrophotometry. 34.. https://doi.org/10.3136/nskkk1962.34.185