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

Abstract

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 SO₄^2- has been Cal-culated. The anode stripping current, i, can be measured using Ph²⁺ to titrate the aqueoussolution containing FAand SO₄^2-by ASV. According to the chemical model of Pb²⁺-FA-SO₄^2-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

CLC Number:

O652

TrendMD:

LIU Jia, DENG Bo. Simulation Calculation for Chemical Speciation of Pb^²⁺-FA-SO₄^2- System by Genetic Algorithms[J]. Chem. J. Chinese Universities, 1997, 18(10): 1597.

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Simulation Calculation for Chemical Speciation of Pb^²⁺-FA-SO₄^2- System by Genetic Algorithms

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