期刊论文详细信息
Química Nova
Experimentos didáticos utilizando sistema de análise por injeção em fluxo
Fábio Rodrigo Piovezani Rocha2  Patrícia Benedini Martelli1  Boaventura Freire Dos Reis1 
[1] ,Universidade Federal de São Carlos Departamento de Química São Carlos SP
关键词: flow injection analysis;    spectrophotometry;    kinetics;    stoichiometry;   
DOI  :  10.1590/S0100-40422000000100022
来源: SciELO
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【 摘 要 】

Didactic experiments are proposed in order to demonstrate the characteristics of flow injection analysis and to extend the applications of FIA to the determination of physical chemistry parameters in undergraduate labs. All experiments can be performed with the same flow manifold by employing usual FIA devices. Analytical characteristics are presented by means of the determination of iron in river water, employing 1,10-phenantroline as chromogenic reagent. Physical chemistry applications were the determination of reaction stoichiometries by continuous variation and mole-ratio methods and the evaluation of the pH and ionic strength effects on the kinetic of the reduction of hexacianoferrate(III) by ascorbic acid.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

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