Chelating resin have been used commercially on worldwide basis for almost a century due to diverse applications in many fields such as water softening and deionization, sugar purification, extraction of uranium, isolation and purification of antibiotics, in hydrometallurgical separation, waste water treatment and pollution control area. The rapid development of electronic instrumentation has created powerful analytical tools but it can give erroneous result due to the presence of matrix elements. To obtained reliable data, the best course is to separate the analytes of interest from the matrix constituents and to determine them in isolated state. Solid phase extraction using chelating resins is the method of choice due to its high separation efficiency, good reproducibility of retention parameters and high sensitivity. Since long, considerable interest has been developed in the synthesis of Chelating resin having special properties and containing specific functional groups. The present book consists of seven chapters. In these chapters it explains synthesis, characterization and analytical Applications of new chelating ion exchange Resins derived from o-substituted benzoic acid.