Produção Nacional
Revisado por pares
Determinação em fluxo do carbonatoresidual do solo empregando pervaporação
2002; Brazilian Chemical Society; Volume: 25; Issue: 1 Linguagem: Inglês
10.1590/s0100-40422002000100023
ISSN1678-7064
AutoresViviane Grassi, Mário Miyazawa, Marcos Antonio Pavan, Marcos Y. Kamogawa,
Tópico(s)Soil Management and Crop Yield
ResumoDETERMINATION OF CO 32-SOIL RESIDUAL IN FLOW ANALISY COUPLED PERVAPORATION.The objective of this study was to develop a method for the direct determination of residual CO 3 2-in acid soil using a flow system coupled with pervaporation.The gas released from the acidified sample was separated though a hydrophobic membrane and detected by conductivimetry.The detection limit was 0.054 mmol c kg -1 for CO 2 /CO 3 2-with relative error of 3.1%.The analytical frequency was 20 samples per hour.The method is recommended for studying the reactions and kinetics of lime applied in acid soils.
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