Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/95752
Type: Artigo de periódico
Title: Automated Gravimetric Management Of Solutions Part 2.* Automated Gravimetric Approach To Direct Potentiometry And Kappa Number Determination
Author: Pasquini C.
Cunha I.B.S.
Abstract: The high-performance microcomputer controlled gravimetric burette described in Part 1 has been employed to automate some routine analytical procedures. A direct potentiometric determination of fluoride ions in drinking water was developed to include an automatic calibration step, matrix adjustment and sample determination. Also the complex and cumbersome titrimetric procedure for determination of the kappa number (lignin content) in paper pulp, has been automated by using the gravimetric unit and biamperometry. In this last instance, the automatic standardization of the solutions employed in the determination and the complete automation of the recommended kappa number determination procedure, allows a significant reduction in the amount of reagent consumed. The gravimetric approach to these procedures reveals that the same performance is achieved in terms of precision and accuracy when compared with classic volumetry while the cost associated with the automation decreases owing to the use of the same unit to attain automatic management of up to three different solutions.
Editor: 
Rights: aberto
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0345235711&partnerID=40&md5=ed5a4d9152bc4acef3ca73c3cf048bfe
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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