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Reports the sighting by two children of the Virgin Mary on a hillside in Spanish Basque territory in 1931
Burguera, ningú no ho negarà, és un home «obsessionat» pel país. Profundament compromès en la defensa de la seua identitat i, malgrat el seu escepticisme, enormement esperançat en el futur. Recull de més d’un centenar d’articles, des dels anys cinquanta fins als noranta, que són testimoni d’aquest compromís insubornable.
Flow Analysis (FA) offers a very convenient and fast approach to enhance and automate 'preliminary steps' of analysis (sample dissolution, pretreatments, preconcentrations, etc.) for atomic spectrometric detectors (ASD). Moreover, flow manifolds can ease the well-known problem of sample introduction/presentation to atomisers or even expand the classical scope of atomic/elemental information, characterizing atomic spectrometry, into the realm of molecules and metal-compounds analysis (e.g. by resorting to coupled separation techniques). All these facts could explain both the extraordinary interest for research and the great importance for practical problem-solving achieved nowadays by FA-ASD....
Highly accurate chemical speciation is of great importance in environmental, clinical, and food sciences, as well as in archaeometry. Trace analysis via atomic spectrometry, mass spectroscopy, gas chromatography, electron microprobing, or X-ray absorption spectroscopy provides detailed information on surface and sub-surface domain of samples. The book comprehensively presents modern techniques, timely application, and data modeling.
Microwave-Assisted Sample Preparation for Trace Element Analysis describes the principles, equipment, and applications involved in sample preparation with microwaves for trace element analysis. The book covers well-established applications as well as new trends in this field. Hot topics such as sample preparation for speciation, metabolomics, and halogen determination, as well as the alternatives of sample preparation for special samples (for example, carbon nanotubes, polymers, petroleum products), are also discussed. The use of microwaves in sample preparation has increased in recent decades. Several applications of microwaves for sample preparation can be found in the literature for pract...
The concept of flow injection analysis (FIA) was first proposed in 1975 by Ruzicka and Hansen, and this initiated a field of research that would, over more than three decades, involve thousands of researchers, and which has to date resulted in close to 20,000 publications in the international scientific literature. Since its introduction, a number of books, including some specialized monographs, have been published on this subject with the latest in 2000. However, in this decade there has been a number of significant advances in the flow analysis area, and in particular in sequential injection analysis (SIA) techniques, and more recently with the introduction of Lab on a Valve (LOV) and bead...
Proceedings of the Seventh International Symposium on Metal Ions in Biology & Medicine held in Saint Petersburg State University, Saint Petersburg, Russia, on 5-9 May 2002.
This volume continues the series' cutting-edge reviews on developments in this field. Since its invention in the 1920s, electrostatic precipitation has been extensively used in industrial hygiene to remove dust and particulate matter from gases before entering the atmosphere. This combination of electrostatic precipitation is reported upon in the first chapter. Following this, chapter two reviews recent advances in the area of chemical modification in electrothermal atomization. Chapter three consists of a review which deal with advances and uses of electrothermal atomization atomic absorption spectrometry. Flow injection atomic spectroscopy has developed rapidly in recent years and after a general introduction, various aspects of this technique are looked at in chapter four. Finally, in chapter five the use of various spectrometric techniques for the determination of mercury are described.
Following the collection of a sample, every analytical chemist will agree that its subsequent preservation and processing are of paramount importance. The availability of high performance analytical instrumentation has not diminished this need for careful selection of appropriate pretreatment methodologies, intelligently designed to synergistically elicit optimum function from these powerful measurement tools. Sample Preparation for Trace Element Analysis is a modern, comprehensive treatise, providing an account of the state-of-the art on the subject matter. The book has been conceived and designed to satisfy the varied needs of the practicing analytical chemist. It is a multi-author work, r...