Materias
(35)
documento electrónico
Article : texto impreso
UCAR, G. ; STACCIOLI, C.G. ; STOLL, M. |Dos tallos bien preservados del fósil Sequoiadendron giganteum excavados en Turquía fueron estudiados utilizando el microscopio electrónico y métodos químicos. El análisis químico incluyó la determinación de los constituyentes principales (ligni[...]documento electrónico
DANIEL BURKE, Autor ; LINDSEY MACKAY, Autor | 2008Highly accurate measurements of the amount of substance of organic molecules in a test material can be obtained using exactly matched calibration solutions and internal standards that are labeled with stable isotope atoms by measuring the amount[...]Article : texto impreso
La madera fósil de la mina de lignito de S. Barbara ( cuenca del Arno, Italia ) fué investigada para hallar su contenido de terpenos. Se hizo la comparación con las muestras de la misma mina, recientemente identificadas como Taxodioxylon gypsace[...]texto impreso
ISABELLE SCHMITZ-AFONSO, Autor ; JORGE E. LOYO-ROSALES, Autor ; MARIA DE LA PAZ AVILES, Autor ; BARNETT A. RATTNER, Autor ; CLIFFORD P. RICE, Autor | 2003A quantitative method for the simultaneous determination of octylphenol, nonylphenol and the corresponding ethoxylates (1 to 5) in biota is presented. Extraction methods were developed for egg and fish matrices based on accelerated solvent ext[...]Article : texto impreso
Un método de cromatografía de gases/ espectrometría de masas (GC/MS) ha sido desarrollado para permitir la determinación del contenido de antraquinona de pulpas, papeles, y licores. Un extracto en cloroformo concentrado conteniendo antraquinona [...]documento electrónico
LUKAS TAUJENIS, Autor ; VILMA OLSAUSKAITE, Autor ; AUDRIUS PADARAUSKAS, Autor | 2014texto impreso
Hepatotoxic microcystins (MCs) are the most commonly reported cyanotoxins in eutrophic freshwaters. In 1996, human intoxications by MCs caused deaths of 76 patients at Caruaru dialysis centers in Brazil. So far, there have been no direct evidenc[...]texto impreso
documento electrónico
TAO PANG, Autor ; Z. YUAN, Autor ; Y. DAI, Autor ; CH. WANG, Autor ; J. YANG, Autor ; L. PENG, Autor ; GUOWANG XU, Autor | 2007HPLC-atmospheric pressure chemical ionization MS (HPLC-APCI-MS) was used to screen and identify glycosides in tobacco leaf. MS/MS and MS3 and photodiode array (PDA) detection were also used in the characterization. A total of 12 glycosides were [...]texto impreso
documento electrónico
KAREN W. PHINNEY, Autor ; RIMMER, CATHERINE, Autor ; JEANICE BROWN THOMAS, Autor ; SANDER, LANE C., Autor ; SHARPLESS, KATHERINE E., Autor ; WISE, STEPHEN A., AutorVitamins are essential to human health, and dietary supplements containing vitamins are widely used by individuals hoping to ensure they have adequate intake of these important nutrients. Measurement of vitamins in nutritional formulations is ne[...]texto impreso
J. IGNACIO GARCIA ALONSO, Autor ; PABLO RODRÍGUEZ GONZÁLEZ, Autor | Cambridge [REINO UNIDO] : Royal Society of Chemistry | 2013Isotope Dilution Mass Spectrometry (IDMS) has become an essential tool in research laboratories and is increasingly used in routine analysis labs (including environmental, food safety and clinical applications). This is the first textbook to pre[...]documento electrónico
In this book, I have tried to show the way in which high performance liquid chromatography–mass spectrometry (LC–MS) has developed, somewhat slowly it has to be said, into a powerful hybrid analytical technique.In the first chapter, I have discu[...]documento electrónico
C. M. COMPADRE, Autor ; R. A. HUSSAIN, Autor ; N. P. NANAYAKKARA, Autor ; J. M. PEZZUTO, Autor ; A. D. KINGHORN, Autor | 1988Steviol (ent-13-hydroxykaur-16-en-19-oic acid), the aglycone of various plant-derived glycoside sweeteners consumed by human populations, is known to be mutagenic toward Salmonella tymphimurium strain TM677 when metabolically activated using a 9[...]texto impreso
DAVIS, REG, Autor ; FREARSON, MARTIN , Autor | Londres [REINO UNIDO] : David J. Mowthorpe | Analytical Chemistry by open learning | 1987texto impreso
texto impreso
Whatever your ICP-MS experience, you probably know that there are many textbooks compiled and edited by academics that approach ICP-MS from a purely theoretical and fundamental perspective, but there aren’t any books that provide a practical per[...]texto impreso
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[...]texto impreso
LONG ZHOU, Autor ; CHEN CHEN, Autor ; HOU XIANDENG, Autor ; ZHENG CHENGBIN, Autor | 2012As an extended discussion of Part I, this review provides a survey of the literature about the elemental and speciation analysis of hydride-forming and non-hydride-forming elements in real samples by using hydride generation–analytical atomic sp[...]texto impreso
LONG ZHOU, Autor ; LUO YAMIN, Autor ; ZHENG CHENGBIN, Autor ; DENG PENGCHI, Autor ; HOU XIANDENG, Autor | 2012Hydride generation is the most popular and widely used chemical vapor generation technique and is interesting to analytical chemists as an effective sample introduction method, especially for elemental determination and speciation analysis by an[...]documento electrónico
D.M. HOLSTEGE, Autor ; B. PUSCHNER, Autor ; G. WHITEHEAD, Autor ; F.D. GALEY, Autor | 2002Milk is typically screened for â-lactam antibiotics by nonspecific methods. Although these methods are rapid and sensitive, they are not quantitative and can yield false positive findings. A sensitive and specific method for the quantitation and[...]texto impreso
THOMAS PROHASKA, Editor científico ; JOHANNA IRRGEHER, Editor científico ; ANDREAS ZITEK, Editor científico ; NORBERT JAKUBOWSKI, Editor científico | Cambridge [REINO UNIDO] : Royal Society of Chemistry | News Developments in Mass Spectrometry | 2015This book was triggered by the success story of sector field mass spectrometry in elemental and isotopic analysis since the first presentation of the mass spectrum of Ne a hundred years ago. The outstanding and unique features of sector field ma[...]