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Titolo:
A novel spectrophotometric tool for bleaching studies and determination ofhexenuronic acid removal
Autore:
Ragnar, M;
Indirizzi:
Kvaerner Pulping AB, R&D Fiberline, SE-65115 Karlstad, Sweden Kvaerner Pulping AB Karlstad Sweden SE-65115 , SE-65115 Karlstad, Sweden
Titolo Testata:
NORDIC PULP & PAPER RESEARCH JOURNAL
fascicolo: 1, volume: 16, anno: 2001,
pagine: 68 - 71
SICI:
0283-2631(2001)16:1<68:ANSTFB>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFUSE-REFLECTANCE SPECTROSCOPY; PULPS;
Keywords:
UV-Vis; diffuse reflectance; bleaching studies; bleaching stage; bleaching sequence; hexenuronic acid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Ragnar, M Kvaerner Pulping AB, R&D Fiberline, POB 1033, SE-65115 Karlstad,Sweden Kvaerner Pulping AB POB 1033 Karlstad Sweden SE-65115 d, Sweden
Citazione:
M. Ragnar, "A novel spectrophotometric tool for bleaching studies and determination ofhexenuronic acid removal", NORD PULP P, 16(1), 2001, pp. 68-71

Abstract

A novel analytical tool, useful for the study of the structural chemical changes during bleaching, is presented. The method is based on diffuse reflectance UV-Vis-spectrophotometry applied to laboratory paper sheets made in a standardised way. Difference spectra are calculated and the changes during bleaching thus determined. The decrease in absorption at 232 nm was shownto be due to removal of hexenuronic acid and the method presents a semi-quantitative tool for e.g. studies of the removal of this structure. The method has been named the DRUVIS-method.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 13:25:41