高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (12): 1953.

• 论文 • 上一篇    下一篇

最陡下降-模拟退火算法求解镉-腐殖酸配合物累积稳定常数

尹虹, 邓勃   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:1996-10-15 出版日期:1997-12-24 发布日期:1997-12-24
  • 通讯作者: 邓勃
  • 作者简介:尹虹, 女, 25岁, 硕士研究生.
  • 基金资助:

    国家自然科学基金

Calculation of the Cumulative Stabilization Constants of Cd-HA Complexes by Gradient Descent-simulated Annealing Algorithm

YIN Hong, DENG Bo   

  1. Department of Chemistry, Tsinghua University, Beijing 100084
  • Received:1996-10-15 Online:1997-12-24 Published:1997-12-24

PDF (PC)

被引次数

4

摘要： 采用阳极溶出伏安法结合人工神经网络法中的最陡下降-模拟退火算法,研究了在碱性介质中镉与天然水环境中的有机物质腐殖酸(HA)的配合物,用ASV法测定了来源于煤炭腐殖酸的富里酸分子量平均值为995．2,求得PH≌10条件下的Cd2+-HA的1级和2级配合物累积稳定常数值1gβ1=4．079,1gβ2=8．602．

关键词: 最陡下降-模拟退火算法, 腐殖酸, 镉, 累积稳定常数

Abstract: In this paper, the cumulative stabilization constants 0f Cd-HA (Humic Acid) inthe alkali media have been studied and calculated using anode stripping voltammetry method(ASV) cornbined with GD-SAalgorithm in artificial neural network(ANN)- The molecularweight of humic acid originated from coal was determined by ASVmethod and its averagevalue is 995.2, The cumulative stabilization constants of the first and second order complexes of Cd2+-HAunder the condition of pH=10 were calculated and their values are 1gβ1=4.079 and 1gβ2=8.602 respectively.Two local minimum of objective function appear in iterative process.The values of objective function jump out from these local minimum successfully and reach to the global optimization.

Key words: GD-SA algorithm, Humic acid, Cadium, Cumulative stabilization constants

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