关键词: 生物元素, 生物元素图谱, 三维元素周期表, 四膜虫, 生物体

Abstract: A definition of biological essential element was proposed. Their origin and function in human body were discussed. An excellent strain S1 of Tetrahymena, a kind of ciliates, has been used in this study to observe both stimulation or nutritious and toxic inhibition effects of elements located in s block, p block, d block, and f block in the periodic table, some regularity between the biological effects of these elements and their positions in the periodic table has been obtained. It is shown that a “spectrum of biological element equilibrium”, which exists in organism, can be exhibited in the periodic table designed in the three-dimensional space, if the abundance of biological elements or/and their bioavailability is used as the third z axis, a vertical line to the plane of the periodic table, and then the biological element spectrum shows that the exchanges of matter and energy between organism and surface environment of the earth have been reached the dynamic equilibrium state. It seems that not only physical and chemical properties of different elements and their compounds can be shown in the developed periodic table, but also their biological properties to a certain extent.

Key words: biological element, biological element spectrum, periodic table in the three-dimensional space, Tetrahymena, organism