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documento electrónico
J MEIJA, Autor ; S MOUNICOU, Autor ; JA. CARUSO, AutorA review is presented on recent applications of plasma spectrometric techniques for speciation analysis in beverages. The 3 most common ways of characterizing beverages in addition to elemental speciation are also discussed: total element analys[...]documento electrónico
J MEIJA, Autor ; S MOUNICOU, AutorA review is presented on recent applications of plasma spectrometric techniques for speciation analysis in beverages. The 3 most common ways of characterizing beverages in addition to elemental speciation are also discussed: total element analys[...]Article : texto impreso
La pureza de la lignina precipitada a bajo pH del licor negro kraft fué examinada junto a los factores que mejoran la pureza. La recuperación de lignina por precipitación fué también evaluada buscando optimizar la recuperación con alta pureza.Lo[...]texto impreso
TRONG KHOA PHAM, Autor ; PHILLIP C WRIGHT, AutorNowadays, proteomics is recognized as one of the fastest growing tools in many areas of research. This is especially true for the study of Saccharomyces cerevisiae, as it is considered to be a model organism for eukaryotic cells. Proteomic analy[...]documento electrónico
JEN HOW HUANG, Autor ; GUNTER ILGEN, Autor ; PETER FECHER, Autor | 2010Extraction using 0.28 M nitric acid at 95 °C for 90 min recovers not only arsenic quantitatively from rice grains independent of types but also preserves arsenic speciation completely. It is simple, economic, effective and reliable and is especi[...]documento electrónico
J. SAMSONEK, Autor ; F. PUYPE, AutorThis article gives a practical overview of normative methods for restriction of hazardous substances (RoHS) evaluation and RoHS requirements, alternative methods and guidance on sampling strategies, measurement, and interpretation. Special atten[...]documento electrónico
WALTER N. L. DOS SANTOS, Autor ; DANNUZA D. CAVALCANTE, Autor ; SAMUEL M. MACEDO, Autor ; JESSICA S. NOGUEIRA, Autor ; ERIK G. P. DA SILVA, AutorThis paper proposes a procedure for the determination of total arsenic in rice using slurry sampling and hydride generation atomic fluorescence spectrometry (HG AFS). During optimization, water, hydrochloric acid, and nitric acid solutions were [...]documento electrónico
BENNO F. ZIMMERMANN, Autor | 2011Stevia rebaudiana contains several steviol glycosides that have a sweet flavor. They are up to 450 times sweeter than sucrose, but some have an undesirable aftertaste. Up to 2010, ten different steviol glycosides have been described from the lea[...]Article : texto impreso
Un método para seguir las pérdidas de agua de un adhesivo en contacto con el papel está basado en la disminución de la absorbancia infrarroja de la capa de adhesivo medida por un espectrómetro de reflectancia interna múltiple. El método ha proba[...]documento electrónico
A. GONZALVEZ, Autor ; S. ARMENTA, Autor ; M. DE LA GUARDIA, AutorA methodology based on inductively coupled plasma optical emission spectrometry (ICP-OES) after microwave-assisted acid digestion was developed to determine the content of traces elements in curry samples from the Spanish market. The methodology[...]