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CHEMICAL ANALYSIS BY FLAME PHOTOMETRY
Spectrochemical analysis with flame excitation has advanced with exceptional vigor during the past decade owing to the systematic de- velopment and the increasing efficiency of the apparatus. But the literature on this subject is scattered in the technical journals of many branches of science; it is therefore hard to get a general view of the entire field. In the present monograph we undertake to provide such a view, correlating anew the several aspects of the subject.
We emphasize topics of interest to the practical analyst, such as apparatus, technique of measurement, and advantages, drawbacks, and limitations of individual methods. The theory of excitation of atoms and molecules in the flame, the historical development, etc., are treated only briefly. Considerable space is given to the sources and circumven- tion of error, for control of error is certainly necessary for successful work.
In presenting apparatus and technique we use several commercial instruments as examples. No judgment of the merit of these instru- ments is thereby implied. Further, certain special applications are described even though the necessary apparatus is not yet commercially available. Perhaps this will stimulate development of more efficient methods and instruments for such applications. With this thought in mind, too, we often detail the limitations within which a method must operate, at least with the means at present available.
To keep this book within reasonable bounds, we could not list among the applications all the analytical procedures worked out to date. More than 700 materials of the most diverse types and origins have already been investigated by flame analysis. For many of these a number of other analytical methods also exist. We therefore review the various applications summarily, giving a few examples and references to the extensive bibliography at the end of the book.
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