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Despite the development of innovative new analytical techniques for biological trace element research, today's trace element investigators face formidable obstacles to obtaining reliable data. This complete reference identifies and assesses the challenges the analyst encounters at each stage of an analysis, and discusses the effects of various techniques on the sample.Three internationally recognized scientists and authors consider the effects of the numerous collection, storage, and sample preparatory techniques used in sample analysis. Proper analytical quality control, including such critical factors as sampling and sample preparation, specimen preservation and storage, and ashing, is examined. The book also looks at sample preparation methods unique to various instruments and speciation chemistry issues, and examines the link between chemical analysis and specimen banking. A previously unrecognized source of error, presampling factors, is also discussed.

Studies in Analytical Chemistry, Volume 4: Guide-Lines to Planning Atomic Spectrometric Analysis covers the physico-chemical background of atomic absorption spectrometry (AAS) and atomic emission spectrometry (AES). This book is composed of six chapters and begins with an introduction to the criteria on choosing the best and most suitable method for solving a given analytical problem. The next chapters deal with the properties, generation, and absorption of electromagnetic radiation, as well as the theory of atomic spectra that require knowledge of X-ray. Other chapters discuss the broadening of atomic lines, which is important for understanding that calibration curves in AAS are always bent. A chapter examines the sensitivity of determination by AAS and AES. The last chapter describes the spectrometric measurement of atomic absorption and emission. This chapter also looks into the influence of the design of the monochromator upon the measured emission intensity and calibration curve by AAS. This book will prove useful to analytical chemists and researchers.

Automatic Titrators focuses on the contributions and effects of modern automation on volumetric analysis. The book presents titration as a modern instrumental method in this kind of analysis. Divided into nine chapters, the book proceeds by defining the value of automatic titration methods. The text also outlines the general considerations of titrate design wherein instrumental indicators, recorders, and controllers are given emphasis. Automatic potentiometric titrates are also discussed. A historical tracing of these titrators is presented as well as the trends and kinds of modern automatic titrators. The book also touches on automatic photometric and automatic coulometric titrators. Supporting discussions focus on photosensitive devices; photometric titration curves; coulometric circuits; instruments with potentiometric, amperometric, and photometric indication; and multipurpose coulometric titrators. The book ends by fully discussing automatic and continuous titrators, commercially available titrators, and applications of automatic titration methods. The selection can best serve those wanting to explore the function of titrators in volumetric analysis.