高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (10): 1597.

• 论文 • 上一篇    下一篇

遗传算法模拟计算Pb2+-FA-SO42-体系的化学形态分布

刘嘉, 邓勃   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:1996-08-14 出版日期:1997-10-24 发布日期:1997-10-24
  • 通讯作者: 邓勃.
  • 作者简介:刘嘉, 男, 23岁, 硕士研究生.
  • 基金资助:

    国家自然科学基金

Simulation Calculation for Chemical Speciation of Pb2+-FA-SO42- System by Genetic Algorithms

LIU Jia, DENG Bo   

  1. Department of Chemistry, Tsinghua University, Beijing 100084
  • Received:1996-08-14 Online:1997-10-24 Published:1997-10-24

摘要: 研究了水体中重要污染元素铅在富里酸(FA)、SO42-共同存在时的化学形态分布,根据物料平衡和化学平衡建立了Pb2+-FA-SO42-的化学模型,用Pb2+滴定络合剂FA和SO42-的混合溶液,使用ASV测定阳极溶出电流并采用遗传算法(GA)对铅的化学形态进行了模拟计算,用成对t检验的结果表明,阳极溶出电流的计算值和实测值之间并无显著性差异.

关键词: 遗传算法, 化学形态, 富里酸,

Abstract: Fulvic acid (FA) has the marked effect on the chemical speciations of metal ionsexisted in water system and further affects their biological action as well as their remove andtransformation in ecosystem. In this paper, the chemical speciation of lead, an importantharmful and pollution element, in the aqueous solution containing FAand SO42- has been Cal-culated. The anode stripping current, i, can be measured using Ph2+ to titrate the aqueoussolution containing FAand SO42-by ASV. According to the chemical model of Pb2+-FA-SO42-constructed basing on material and chemical balance, the simulation calculation for thechemical speciations of lead have been made using a novel method of global optimization-ge-genetic algorithm (GA). The results of t test indicate that there is no significant differencebetween calculated and experimental values of anode stripping current.

Key words: Genetic algorithms, Chemical speciation, Fulvic acid, Lead

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