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Sampling and Sample Preparation - Practical Guide for Analytical Chemists (Paperback, Softcover reprint of the original 1st ed. 1997)
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Sampling and Sample Preparation - Practical Guide for Analytical Chemists (Paperback, Softcover reprint of the original 1st ed. 1997)
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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."
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