Construção e aplicação de uma cela espectrofotométrica de camada delgada para análises em fluxo

Autor:	Vitor J. P. Gouveia, Paulo C. C. Oliveira, Jorge C. Masini
Jazyk:	portugalština
Rok vydání:	2001
Předmět:	chemistry.chemical_compound Chromium Brucine steel samples Chemistry Oxalic acid Analytical chemistry chemistry.chemical_element spectrophotometric Cr(VI) determination Sulfuric acid thin layer cell General Chemistry Nuclear chemistry
Zdroj:	Química Nova, Volume: 24, Issue: 3, Pages: 399-403, Published: JUN 2001 Química Nova v.24 n.3 2001 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ
Popis:	A low cost spectrophotometric cell for use in flow analysis was manufactured in acrylic and adapted to a commercial spectrophotometer. The application of this cell was performed in the determination of chromium (VI) in steel samples using the reaction with the alkaloid brucine in presence of oxalic acid and 0.6 mol L-1 sulfuric acid. The cell allows an enlarged analytical range, diminishing the extension of dilutions, which is useful for on-line monitoring of industrial processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e965e61004f619c218bb5c08b2d37373 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422001000300017&lng=en&tlng=en Zobrazit plný text záznamu