Abstract:
CONTENTS I. Introduction 419 II. Isolation of protoactinium from naturally occurring sources 420 III. Artificial preparation of protoactinium-231 422 IV. Methods for the determination of protoactinium 422 V. Extraction of protoactinium by organic solvents 423 VI. Ion exchange, adsorption, and coprecipitation of protoactinium 425 VII. The state of protoactinium in aqueous solutions 426 VIII. Protoactinium and the actinide family 426