The pace of change in Instrumental Methods of Chemical Analysis has continued unabated since the last edition was published and in some areas the change have been dramatic. Most instrumental techniques have benefitted from these developments in terms of reliability, versatility and the processing and presentation of data. We have tried to indicate the nature of recent changes and developments without compromising the principal subject matter of the book which remains the instrumental techniques themselves and their applications. As with the new edition, the format of the book has been changed. The significant alterations and additions have been made in each instrumental techniques. Line diagrams have been redrawn to make the book more illustrated. New instrumental techniques have been added, the uses of which have been growing steadily in the recent past. The wide range and new standardized of this book make it the ideal reference work for all undergraduate and postgraduate students of chemistry, biochemistry, industrial chemistry, environmental science, pharmacy, microbiology, biotechnology, geology, materials science and related disciplines. This book is also useful for anyone who uses chemical analysis in their work. With this book, the users can find information about the most instrumental techniques in an understandable forms, simplifying decision about which instrumental techniques can provide the information they are seeking on chemical composition and structure. About The Author: About Sham Anand Msc,Ph.D.Department of Chemistry Dyal Singh College,Unviersity of Delhi. About Dr. G.R. Chatwal Dr. Gurdeep R. Chatwal is widely known for writing several popular text books, monographs and encyclopedia on different aspects on chemistry, environmental science and pharmaceutical chemistry. He got his M.Sc. from Roorkee University (Now I.I.T. Roorkee) and Ph.D. from University of Delhi. At present he is working as Reader in Chemistry in D.S. College, University of