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Provided here is a collective source of data covering the actual uses of amphiphilic organized media in analytical chemistry and an explanation of the mechanisms by which these systems exert their different functions in each analytical scheme.The volume has been organized into two parts. The first part, consisting of three chapters, describes the structural features and properties of amphiphilic aggregates and the analysis of the interactions between analytes and these assemblies. Attention is focussed on the distribution and location of solutes within the different regions of the microheterogeneous media, and on the observed effects on chemical equilibria, kinetics and molecular properties of substrates. The second part, comprising five chapters, centers on the applications of amphiphilic systems in specific analytical techniques, such as spectroscopy, chromatography, electroanalysis, etc. The role of surfactant aggregates is examined in the light of existing theories and models, and performances are compared with those obtained with traditional methods. The potential interest of some recently developed surfactant-based separations, such as extractions with reversed micelles or micellar-enhanced ultrafiltration, in biotechnology and pollution control is also underlined. Finally, the need for new functionalized surfactants, designed specifically for the novel analytical applications is considered, e.g. the preparation of chelating micelles obtained from suitable amphiphilic ligands and their performances as extracting systems for metal ions are described.Researchers working on the applications of surfactants in environmental chemistry and biotechnology and organic and physical chemists concerned with reactivity and synthesis in organized media will find this a valuable text.

In this book an internationally renowned scientist presents a radically new theory of the origin of life on Earth 4 billion years ago.Harold J. Morowitz postulates that the first step toward the origin of life was the spontaneous condensation of amphiphilic molecules to form vesicles (or protocells). This hypothesis provides a framework for reexamining the emergence of cellularity. Morowitz further proposes that core metabolic processes have not changed for some 3.8 billion years, so we can use a study of modern biochemistry to advance our knowledge about the chemical processes of the earliest protocells. Morowitz views origin of life issues from the perspective of certain constructs in the philosophy of science that provide guideposts to formulating and assessing hypotheses. This book presents a unique discussion among origin-of-life books on the relation between science and epistemology on the difficult problem of learning about the very distant past.

In this book an internationally renowned scientist presents a radically new theory of the origin of life on Earth 4 billion years ago.Harold J. Morowitz postulates that the first step toward the origin of life was the spontaneous condensation of amphiphilic molecules to form vesicles (or protocells). This hypothesis provides a framework for reexamining the emergence of cellularity. Morowitz further proposes that core metabolic processes have not changed for some 3.8 billion years, so we can use a study of modern biochemistry to advance our knowledge about the chemical processes of the earliest protocells. Morowitz views origin of life issues from the perspective of certain constructs in the philosophy of science that provide guideposts to formulating and assessing hypotheses. This book presents a unique discussion among origin-of-life books on the relation between science and epistemology on the difficult problem of learning about the very distant past.