Treatise On Applied Analytical Chemistry Methods And Standards For The Chemical Analysis Of The Principal Industrial And Food Products

Author : Professor Vittorio Villavecchia
Publisher :
ISBN 13 : 9781330502259
Total Pages : 502 pages
Book Rating : 4.5/5 (22 download)

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Download or read book Treatise on Applied Analytical Chemistry, Vol. 1 written by Professor Vittorio Villavecchia and published by . This book was released on 2015-06-30 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Treatise on Applied Analytical Chemistry, Vol. 1: Methods and Standards, for the Chemical Analysis of the Principal, Industrial and Food Products Chemical analysis applied to the examination of industrial and alimentary products plays an important part in the purchase of raw materials, in the control of manufacturing processes, and in the determination of the value, impurities and adulterations of the finished products. It constitutes, indeed, a branch of chemistry worthy of assiduous cultivation by the technical chemist who wishes to obtain a rational knowledge of his prime materials and finished products, by the hygienic chemist desirous of detecting any additions to or changes in food substances, by the commercial chemist for the exact characterization and evaluation of commercial products, and, in general, by experts and inspectors appointed to exact contractual conditions in connexion with the purchases and supplies of the State. The methods followed in these industrial and commercial analyses are applications of general, analytical and physical chemistry to special cases; in some instances they are less rigorous than, and do not attain the precision of, scientific methods, whereas in others the accuracy is that of the most exact scientific investigations. The choice of the method to be used is of considerable importance in practice, which demands processes giving the greatest exactitude compatible with the end in view at the lowest possible expenditure of time and trouble. In most cases numerous methods are given in the literature for the examination of any particular material, and doubt is often felt as to which of these methods it is preferable to employ, the more so since the differences frequently lie in details and are not of great import. Thus, without preliminary trial, the analyst, especially in a new field, cannot always decide easily which procedure will answer his purpose. It may, further, be pointed out that, with certain products, the methods of analysis at present available yield results which are not absolute but relative only to the procedure employed. In such cases it is most important that different workers use one and the same method - although perhaps not a very accurate one - in order that the results obtained may exhibit the necessary concordance. Then, too, certain States have felt the necessity of issuing official standards to be attained in the analysis of various commodities of general interest, while in commercial and industrial circles the custom is growing of fixing beforehand the analytical methods serving as basis for the evaluation of the products to be dealt in. All this shows how useful it is for the analyst to have at his command a collection of such methods and standards for industrial and commercial analyses as, having been either officially prescribed or repeatedly tested, may be confidently adopted. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.