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6 produkter
6 produkter
E-bok
PDF, Engelska, 20081 572 kr
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There are many academic references describing how RMs are made, but few that explain why they are used, how they should be used and what happens when they are not properly used. In order to fill this gap, the editors have taken the contributions of more than thirty RM practitioners to produce a highly readable text organized in nine chapters. Starting with an introduction to historical, theoretical and technical requirements, the book goes on to examine all aspects of RM production from planning, preparation through analysis to certification, reviews recent development areas, RMs for life analysis and some important general application fields, considers the proper usage of RMs, gives advice on availability and sources of information and lastly looks at future trends and needs for RMs. This book is intended to be a single point of information that both guides the reader through the use of RMs and serves as a primary reference source. It should be on the reading list of anyone working in an analytical laboratory and be found on the library shelf of all analytical chemical laboratories.
E-bok
PDF, Engelska, 20121 367 kr
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The significant progress achieved in modern instrumental analysis has led to a continuous lowering of detection limits and improved precision. This should in principle permit the reliable and extremely precise analysis of trace compounds mainly trace elements, at levels down to the lowest natural concentrations. However, the frequently observed very high discrepancies between the analyt ical results of different laboratories as well as the deviations from true values are, regrettably, still common in analytical practice. Basic methodological errors at the determination step can usually be minimized or even avoided by carefully per formed quality control measures - e. g. by interlaboratory comparisons and the proper use of certified reference materials. The most severe and often under estimated error sources, however, are those connected with the whole and often extremely complex sampling process, and also to a lesser extent, with sample pre paration prior to analysis. Thus, for these initial steps of an analytical procedure particular experience is needed, as well as a detailed knowledge of the interrela tions between these steps, which always have to be applied with the utmost care. In collaboration with a number of very experienced colleagues working in dif book has tried to contribute to a better ferent research areas, the editor of this understanding of these particular error sources and how they can be overcome in a series of training courses held during the last decade at the "Haus der Technik", Essen, Germany.
Häftad, Engelska, 2011
1 091 kr
Skickas inom 10-15 vardagar
The significant progress achieved in modern instrumental analysis has led to a continuous lowering of detection limits and improved precision. This should in principle permit the reliable and extremely precise analysis of trace compounds mainly trace elements, at levels down to the lowest natural concentrations. However, the frequently observed very high discrepancies between the analyt ical results of different laboratories as well as the deviations from true values are, regrettably, still common in analytical practice. Basic methodological errors at the determination step can usually be minimized or even avoided by carefully per formed quality control measures - e. g. by interlaboratory comparisons and the proper use of certified reference materials. The most severe and often under estimated error sources, however, are those connected with the whole and often extremely complex sampling process, and also to a lesser extent, with sample pre paration prior to analysis. Thus, for these initial steps of an analytical procedure particular experience is needed, as well as a detailed knowledge of the interrela tions between these steps, which always have to be applied with the utmost care. In collaboration with a number of very experienced colleagues working in dif book has tried to contribute to a better ferent research areas, the editor of this understanding of these particular error sources and how they can be overcome in a series of training courses held during the last decade at the "Haus der Technik", Essen, Germany.
E-bok
PDF, Tyska, 2013672 kr
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Die Ergebnisse chemischer Analysen können nie besser sein als die vorangegangenen Schritte der Probenahme und des Probenaufschlusses. Ziel des Buches ist es, dem Leser die Grundlagen für die Probenahme und den Aufschluß zu vermitteln. Strategien zur zeitlichen und räumlichen Auswahl repräsentativer Proben werden im ersten Teil behandelt. Der zweite Teil vermittelt detailliert die Prinzipien und Probleme der Druckaufschlußmethoden. Herausgeber und Autoren spannen hierbei den Bogen von Materialien aus der Umwelt, über Lebensmittel bis zu Humanmaterial.
Häftad, Tyska, 2011
716 kr
Skickas inom 10-15 vardagar
Die Ergebnisse chemischer Analysen können nie besser sein als die vorangegangenen Schritte der Probenahme und des Probenaufschlusses. Ziel des Buches ist es, dem Leser die Grundlagen für die Probenahme und den Aufschluß zu vermitteln. Strategien zur zeitlichen und räumlichen Auswahl repräsentativer Proben werden im ersten Teil behandelt. Der zweite Teil vermittelt detailliert die Prinzipien und Probleme der Druckaufschlußmethoden. Herausgeber und Autoren spannen hierbei den Bogen von Materialien aus der Umwelt, über Lebensmittel bis zu Humanmaterial.
Inbunden, Engelska, 2004
11 179 kr
Tillfälligt slut
Since the last edition was published in 1991, the "Merian" has established itself as the standard reference on this topic, and remains unmatched in the breadth of material covered.This new edition has 20 % more pages while being more clearly and concisely structured. New topical features are the focus on nutritional aspects and the coverage of further elements, including non-metals. The newly added chapters cover more than 15 essential elements, as well as some of environmental and nutritional importance. While many chapters of the previous edition have been practically rewritten to accommodate the rapid progress made in this field, all the contributions have been revised and updated to present the current state of knowledge.As such, the handbook continues to provide detailed information on the environmental metals that influence the health of plants, animals and humans, with particular attention given to environmental and analytical chemistry, bioavailability, metabolic pathways and biological effects. It also delineates the problems related to waste, soils and wildlife as well as the risks caused by the increasing output of metals from industry and households.It retains the proven features of the first edition, such as the extensive bibliography, numerous tables with useful data and a glossary of terms, and once again all the contributions were not only written but also reviewed by acknowledged and experienced experts. In total, international experts from 15 countries have pooled their knowledge and experience to create this ultimate resource.Essential information for chemists, biologists, geologists, food scientists, toxicologists and physiologists involved in environmental research and remediation, risk assessment, food research and industrial hygiene.