大型底栖海藻对海水中元素富集的吸着-配位化学模型

Concentration Factors in Benthic Macroalgae for Elements and an Adsorption—Coordination Chemical Model

研究了大型底栖海藻对海水中元素的富集系数（ＣＦ） 和元素在海水中平均逗留时间（ＭＯＲＴ） 、海水中的浓度（Ｃ） 、在深海粘土／ 海水中分配系数（Ｋ） 之间的关系，给出了ｌｇＣＦ～ｌｇ（ＭＯＲＴ） 、ｌｇＣＦ～ｌｇＣ及ｌｇＣＦ～ｌｇＫ等的线性回归方程。指出元素在大型底栖藻中的富集主要地是一种服从吸着———配位作用规律的化学作用，并采用Ф（ Ｚ／ｒ，Ｘ） 函数来估算富集系数。

The relationship between the concentration factors in benthic macroalgae for elements and the mean oceanic residence, concentration in sea water, deep sea clay/sea water partition coefficient for elements were studied. The results indicate that the concentration factor in benthic macroalgae for elements is dominated by the “adsorption coordination” chemical interaction. A method to estimate the concentration factor in benthic macroalgae is proposed by using a function Ф (Z/r,X,R ξ)