Colorimetric Methods of Analysis Including Some Turbidimetric and Nephelometric Methods I. [antikvár]

PREFACE TO THE THIRD EDITION " V Because of the tremendous volume of material published on colori-metric methods—and particularly on photometric methods—during the ten years which have elapsed since publication of the second edition, the size and scope of the present edition have necessarily been increased. Nephelometric and turbidimetric methods—minor in number but still important—are included. As in the second edition, the aim has been completeness, but even so, much condensation was found necessary. Many of the older references given in the second edition have been deleted; policy has been to cite the majority of new references. Description of new equipment designs is necessarily limited to the commercially more important types. Some unusual modifications are outlined briefly. Expansion of text necessitated a change from two to three volumes, covering in Volume I Theory, Instruments, pll; Volume II Inorganic; and Volume IIT Organic Applications. Alternative methods are still given, since that which is satisfactory for one purpose may be unsuited to another. Because the preparation of different types of samples is often the most difficult and troublesome part of a determination, much space has been devoted to this. In this revision, in addition to study of the extensive journal literature, careful attention has been given to various related volumes which have appeared, particularly Organic Reagents in Inorganic Analysis by Ibert Mellan (1941) ; Kolorimetrisclie Analyse by Bruno Lange (1941) ; Photelom.etric Clinical Chemistry by William S. Hoffman (1941) ; Optical Methods of Chemical Analysis by T. R. P. Gibb, Jr. (1942) ; Colorimetric Determination of Traces of Metals by E. B. Sandell (1944) ; Metallurgical Analysis hy Means of the Spekker Ahsorptiometer by F. W. Haywood and A. A. R. Wood (1944) ; Colorimetry for Chemists by M. G. Mellon (1945) ; Colorimetric Analysis by Noel L. Allport (1945) ; and others.