Analytical spectroscopic techniques have been extremely useful and results oriented in terms of environment assessment. This book deals with the techniques like energy dispersive x-ray fluorescence (EDXRF), x-ray diffraction (XRD), scanning electron microscope (SEM), induced coupled plasma mass spectroscopy (ICP-MS), atomic absorption spectroscopy (AAS) and their applications on soil, plants and water samples. The basic theory, provided along with the all experimental details is a key feature of this book. Various sample preparation methods have been used and studied, as well. The proper use of different multivariate statistical methods, applied on the large data, enable us to comprehend the results and to interpret them. Statistical methods like PCA, Ridge Regression, PCR regression, etc. are employed in the book, in a detailed manner.