锕系元素镅（Am）在水溶液中存在形式模拟计算

SIMULATED CALCULATION ON SPECIES CONTRIBUTION OF ACTINOID AMERICIUMIN AQUEOUS SOLUTION

本文利用地球化学模式程序模拟了元素在水中的存在形式。ＥＱ３ＮＲ是根据热力学平衡理论，用化学反应式和数学方程式来研究地球化学作用的一种概念化静态平衡模式程序，主要用来解决物种的溶解性问题，特别是某些放射性核素如Ａｍ，Ｕ，Ｐｕ，Ｎｐ，Ｔｈ，Ｒａ，Ｔｅ等的存在形式及其分布。本文以核素镅为例，计算了镅在水溶相中的存在形式，并模拟计算了不同ｐＨ值和不同∑ＣＯ３（总碳）浓度条件下镅物种的化学形态分布优势。结果表明，镅的碳酸形式优势明显。

The contribution of aqueous species can be calculated by Geochemical Modelling Code. EQ3NR is a kind of concept static balance model which. is based on the thermodynamic theory and describe geochemical processes by means of chemical reaction equations and mathematical formula. It is used in solving species solubility,especially some nuclide Am, U, Pu,Np,Th, Ra,Te, and so on. This paper calculates species contribution of Americium by use of EQ3NR code. The results show the superiority of Am (CO3)(n-1￣ 2) form.